Fracture Surface Investigations of Api Pipes Welded With

steel For PiPelines

approved fracture mechanics methods to support the FSPT tests.This paper details the results of the investigation and some field welding experience using automatic GMAW.01 INTRODUCTION 02 pROCeDURe 2.1.Pipe material The pipe used in this program was 406mm diameter,8.8mm thick seam welded using the electrical resistance welding (ERW) process.steel For PiPelinesapproved fracture mechanics methods to support the FSPT tests.This paper details the results of the investigation and some field welding experience using automatic GMAW.01 INTRODUCTION 02 pROCeDURe 2.1.Pipe material The pipe used in this program was 406mm diameter,8.8mm thick seam welded using the electrical resistance welding (ERW) process.Volume 142 Issue 5 Journal of Pressure Vessel Technology Thermal Solutions for a Plate With an Arbitrary Temperature Transient on One Surface and Convection on the Other Direct and Inverse Formulations.Albert E.Segall, Effects of Weld Geometry Size on the Pressure-Bearing Capacity of an API X80 LSAW Pipe.Gui-ying Qiao,Yu

Volume 142 Issue 5 Journal of Pressure Vessel Technology

Thermal Solutions for a Plate With an Arbitrary Temperature Transient on One Surface and Convection on the Other Direct and Inverse Formulations.Albert E.Segall, Effects of Weld Geometry Size on the Pressure-Bearing Capacity of an API X80 LSAW Pipe.Gui-ying Qiao,YuStructural integrity assurance of casing pipes in the oil contact welding (HF) of API J55 steel,is presented.The influence of an initial defect (machined surface crack) on the pipe structural integrity is analysed.Besides the defects at the internal surface,which is in contact with the transported fluid,casing pipes are also exposed to damage at the external surface,Structural integrity assurance of casing pipes in the oil contact welding (HF) of API J55 steel,is presented.The influence of an initial defect (machined surface crack) on the pipe structural integrity is analysed.Besides the defects at the internal surface,which is in contact with the transported fluid,casing pipes are also exposed to damage at the external surface,

Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextFracture Toughness of Different Locations in API X80

With the considerable use of high-grade pipeline steel in onshore and offshore project,welded joints are recognized as the weak link in pipeline because of the non-uniform microstructural regions induced by welding heat input.At first,the microstructural of different regions in API X80 pipeline welded joints was characterized and quantified by SEM,which indicate that the pipeline steel is Production Casing Design ConsiderationsYp = yield strength of the pipe (example P110 is 110,000 psi) T = nominal wall thickness (inches) D = nominal outer diameter of pipe (inches) Per API,the calculated number is rounded to the nearest 10 psi.The 0.875 factor in the above equation represents the allowable manufacturers tolerance of minus 12.5% on wall thicknessPrevious123456NextMechanical Investigations of ASTM A36 Welded Steels with The in-service life of ASTM A36 welded steel pipes in power plants is often shortened by ash corrosion.During the heating condition,the ash deposition on the welded steel pipes gradually reduces the thickness of the pipes,thus,reducing the lifetime.Instead of replacing the pipes with new ones,the cost could be significantly reduced if the lifetime could be further extended.

Prepared for ExxonMobil Pipeline Company and the

Jul 31,2013 Fracture Surface Investigations of Api Pipes Welded With#0183;2.3.1.1 At the time the pipe was manufactured in 1947 and 1948,the specification in effect was API STD.5-L,10th Edition,August 1945.Per this specification,the smelting type of steel was reportedly Open Hearth Steel,the pipe was classified as an Electric Welded Pipe,and the strength was specified to meet Grade B requirements.Prepared for ExxonMobil Pipeline Company and theJul 31,2013 Fracture Surface Investigations of Api Pipes Welded With#0183;2.3.1.1 At the time the pipe was manufactured in 1947 and 1948,the specification in effect was API STD.5-L,10th Edition,August 1945.Per this specification,the smelting type of steel was reportedly Open Hearth Steel,the pipe was classified as an Electric Welded Pipe,and the strength was specified to meet Grade B requirements.NTSB Advisory National Transportation Safety Boardand the fracture origin and failure mechanisms.Investigators found that while the longitudinal seams on some of the pipe segments were fusion-welded from both inside and outside the pipe,some were fusion-welded only from the outside of the pipe.In order to understand this variance,investigators are in the process of researching pipe welding

Mechanical-Technological and Fracture Mechanical

Nowadays already a lot of large onshore-projects have been implemented for the steel X80 with,as it seems,fully satisfactory results.A lot of money is spent worldwide in finding the right joining process for the circumferential welds of these pipes and so a worldwide central collection of welding variables and efficient processing could result in a prediction of the mechanical properties MECHANICAL-TECHNOLOGICAL AND FRACTUREabout 285 HV10 occur.Interesting are the investigations for joining spiral welded pipes of different grades,X80 and X70 or lower.Noticeable are the peaks in the HAZ in the lower grade steel of about 320 HV10.The lower the steel grade the higher the values of the hardness in this case.further on to exit Austria to reach other European mar-MECHANICAL-TECHNOLOGICAL AND FRACTUREabout 285 HV10 occur.Interesting are the investigations for joining spiral welded pipes of different grades,X80 and X70 or lower.Noticeable are the peaks in the HAZ in the lower grade steel of about 320 HV10.The lower the steel grade the higher the values of the hardness in this case.further on to exit Austria to reach other European mar-

L.Zhang's research works East China University of

In this investigation,the mechanical properties and low-temperature fracture toughness of API 5L X65 offshore pipeline welded joints were studied. (FAD) method was applied to the pipe Investigation of Materials/Investigations of Properties JFE-TEC performs commissioned investigations of the material quality of iron and steel,stainless steel,cast iron,nonferrous metals (aluminum,copper,titanium,etc.),high alloys,rubber and plastics.We also evaluate various properties (workability,weldability,fracture toughness,creep,fatigue,corrosion resistance,wear resistance,magnetic properties,residual stress).Influence of Hydrogenation on Residual Stresses of 1.Introduction.High-strength low-alloy (HSLA) steels are widely used in the production of pipes for the oil and gas industry due to their mechanical properties of high strength,good toughness,and excellent weldability 1,2.Moreover,the electric resistance welding (ERW) manufacturing process of API 5L X65 steel pipes led to an increase in mechanical strength and toughness of the weld

Influence of Hydrogenation on Residual Stresses of

1.Introduction.High-strength low-alloy (HSLA) steels are widely used in the production of pipes for the oil and gas industry due to their mechanical properties of high strength,good toughness,and excellent weldability 1,2.Moreover,the electric resistance welding (ERW) manufacturing process of API 5L X65 steel pipes led to an increase in mechanical strength and toughness of the weld Images of FRACTURE SURFACE INVESTIGATIONS of AP imagesIntegrity assessment of API X70 pipe with corroded girth Dec 01,2016 Fracture Surface Investigations of Api Pipes Welded With#0183;The pipes were manufactured from two cuts of API X70 pipe that were 2.3 m in length,762 mm in diameter,and 15.9 mm in thickness to measure their burst pressure with weld caps.During this process,the internal pressure was increased at a rate of 0.25 MPa/min up to 19.6 MPa and at a rate of 0.15 MPa/min up to 28.44 MPa.Girth welding of API 5L X70 and X80 sour service pipesThe API 5L X70 and X80 pipes development for sour service application is very recent.Limited information can be found in literature about the girth welding of these materials.

Fracture toughness of the materials in welded joint of X80

Nov 01,2015 Fracture Surface Investigations of Api Pipes Welded With#0183;The above results indicate that the welding process resulted in embrittlement in the X80 steel welded joint,and the FZ is the fracture risk zone.The typical SEM photograph of the fracture surface of the HAZ in the SENB specimen is shown in Fig.13 .Fracture of Wrinkled Pipes Subjected to Monotonic Jan 20,2011 Fracture Surface Investigations of Api Pipes Welded With#0183;A recent field fracture and failed laboratory specimens under monotonic load history address the necessity of conducting a full-scale test program to better understand the complete post-wrinkling behavior and failure modes of wrinkled pipes under similar loading conditions.Fatigue life prediction of casing welded pipes by using casing pipe,made of API J55 steel by high-frequency welding,in order estimate its structural integrity and life.Based on the critical value of stress intensity factor K Ic ,measured in

Fatigue life prediction of casing welded pipes by using

casing pipe,made of API J55 steel by high-frequency welding,in order estimate its structural integrity and life.Based on the critical value of stress intensity factor K Ic ,measured in Fatigue crack propagation behaviour of pressurised elbow Sep 01,2020 Fracture Surface Investigations of Api Pipes Welded With#0183;Fatigue crack propagation behaviours of Z2CND18.12N austenitic stainless steel pressurised elbow pipes were studied under cyclic bending.The results show that the evolutions of crack depth with the number of cycles at both intrados and crown present logarithmic growth,while the evolutions of crack length with the number of cycles present exponential growth.Failure analysis of a Cross country line pipe using 'CTOD The fracture surface at the point of maximum opening and yielding was oberved under scanning Electron Microscope after ultrasonic cleaning.The fractograph indicated dicontinuities on the pipe inner surface (Fig.3).The depth of the dicontinuities were measured to be around 2.5mm (Max.).

Failure Investigation of Hydrotest Rupture on a Natural

Sep 06,2016 Fracture Surface Investigations of Api Pipes Welded With#0183;A land-based natural gas pipeline,API 5L Grade B pipe with an electric resistance weld (ERW),failed during hydrotesting inspection along the ERW seam,which led to further investigation.Linear indications,indicative of surface cracks,were observed on the outer diameter of the pipe below the fracture surface,made visible by fluorescent light.Using transmission electron microscopy,it was Experimental investigation of local tensile and fracture The aim of the paper is to evaluate the local tensile and fracture toughness properties of the dissimilar metal weld joints between SA508Gr.3 Cl.1 and SA312 Type 304LN pipe.Weld joints have been prepared by manual gas tungsten arc welding (GTAW) process with conventional Vgroove and automatic hot wire gas tungsten arc welding with narrow Experimental investigation of local tensile and fracture The aim of the paper is to evaluate the local tensile and fracture toughness properties of the dissimilar metal weld joints between SA508Gr.3 Cl.1 and SA312 Type 304LN pipe.Weld joints have been prepared by manual gas tungsten arc welding (GTAW) process with conventional Vgroove and automatic hot wire gas tungsten arc welding with narrow

Effects of Weld Geometry Size on the Pressure-Bearing

Jun 01,2020 Fracture Surface Investigations of Api Pipes Welded With#0183;The weld geometry and shape of the weld joint are important factors that affect the mechanical properties of the pipe.In this work,two-dimensional (2D) and three-dimensional (3D) finite element models (FEMs) of a large-diameter,heavy-wall API X80 LSAW pipe were established,and the stress distribution of the pipe was calculated to simulate Cited by 7Publish Year 2016Author Kyu Jung Yeom,Woo Sik Kim,Kyu Hwan OhStudy on Fracture Properties of High-densitypipes,which are widely used in transport the water,gas and corros ive liquid.Investigation shows that one of the failure modes of HDPE pipe is the crack slowly gr ows across the thick direction and leads to failure at last,so that it is very important to study the resistance to crack initiation of HDPE pipe and its butt-fusion welded joint.Cited by 5Publish Year 2019Author Arnab Karani,Soumyajit Koley,Mahadev ShomeFracture Toughness of Different Locations in API X80 With the considerable use of high-grade pipeline steel in onshore and offshore project,welded joints are recognized as the weak link in pipeline because of the non-uniform microstructural regions induced by welding heat input.At first,the microstructural of different regions in API X80 pipeline welded joints was characterized and quantified by SEM,which indicate that the pipeline steel is

Cited by 1Publish Year 2016Author Hong Sheng Lu,Yong He Yang,Gang Chen,Xu Chen,Xin WangFailure analysis of the oil transport spiral welded pipe

Oct 01,2012 Fracture Surface Investigations of Api Pipes Welded With#0183;The spiral welded pipe for transporting oil was made from API 5L X52 steel.The pipe diameter is 720 mm with 810 mm wall thickness.The weld joint is a double V type.The outside and the inside welds were made by submerged arc welding with 60 Fracture Surface Investigations of Api Pipes Welded With#176; welding angle.The pipe maximum working pressure is 3.8 MPa with 3060 Fracture Surface Investigations of Api Pipes Welded With#176;C working temperature Author V.S.A.Challa,I.V.S.Yashwanth,Kayna Lee Mendoza,Stephen StaffordPublish Year 2016Failure of electric resistance welded API pipes Effect Feb 01,2019 Fracture Surface Investigations of Api Pipes Welded With#0183;The chemical composition and mechanical properties in Table 1,Table 2 suggest that the pipes correspond to API 5L standard [].The microstructure changes in the weld zone after normalizing is represented by the optical micrographs shown in Fig.3.In the as welded condition the microstructure comprises of widmanstatten ferrite and bainite which after normalization transforms into ferrite and Applying Fracture Mechanics to Address Emerging Issues in The tool was developed to analyze axially oriented cracks present in pressurized steel cylinders with a wide range of material properties (yield strength,flow stress,fracture toughness) and pipe/flaw geometry (diameter,wall thickness,through-wall or surface crack,crack length and

API 5L X65 Seamless and Welded Line pipe Specification

Many PSL2 pipe sizes and grades require CVN.Seamless pipe is to be tested in the body.Welded pipe is to be tested in the body,pipe weld and heat-affected zone.Refer to the full API 5L specification for the chart of sizes and grades and required absorbed energy values.Surface.All surfaces have been 100% visually inspected.API 5L Pipe Specification (Updated on 2020) - Octal Steel1928 First API 5L standard for manufacturing line pipe appears,covers furnace butt-welded pipe,furnace lap-welded pipe,seamless pipe.Minimum YS 172 Mpa 25000 psi,maximum 310 Mpa 45000 psi.Including material for three Grade A25,A,B,minimum yield strength was

steel For PiPelines

approved fracture mechanics methods to support the FSPT tests.This paper details the results of the investigation and some field welding experience using automatic GMAW.01 INTRODUCTION 02 pROCeDURe 2.1.Pipe material The pipe used in this program was 406mm diameter,8.8mm thick seam welded using the electrical resistance welding (ERW) process.steel For PiPelinesapproved fracture mechanics methods to support the FSPT tests.This paper details the results of the investigation and some field welding experience using automatic GMAW.01 INTRODUCTION 02 pROCeDURe 2.1.Pipe material The pipe used in this program was 406mm diameter,8.8mm thick seam welded using the electrical resistance welding (ERW) process.Volume 142 Issue 5 Journal of Pressure Vessel Technology Thermal Solutions for a Plate With an Arbitrary Temperature Transient on One Surface and Convection on the Other Direct and Inverse Formulations.Albert E.Segall, Effects of Weld Geometry Size on the Pressure-Bearing Capacity of an API X80 LSAW Pipe.Gui-ying Qiao,Yu

Volume 142 Issue 5 Journal of Pressure Vessel Technology

Thermal Solutions for a Plate With an Arbitrary Temperature Transient on One Surface and Convection on the Other Direct and Inverse Formulations.Albert E.Segall, Effects of Weld Geometry Size on the Pressure-Bearing Capacity of an API X80 LSAW Pipe.Gui-ying Qiao,YuStructural integrity assurance of casing pipes in the oil contact welding (HF) of API J55 steel,is presented.The influence of an initial defect (machined surface crack) on the pipe structural integrity is analysed.Besides the defects at the internal surface,which is in contact with the transported fluid,casing pipes are also exposed to damage at the external surface,Structural integrity assurance of casing pipes in the oil contact welding (HF) of API J55 steel,is presented.The influence of an initial defect (machined surface crack) on the pipe structural integrity is analysed.Besides the defects at the internal surface,which is in contact with the transported fluid,casing pipes are also exposed to damage at the external surface,

Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextFracture Toughness of Different Locations in API X80

With the considerable use of high-grade pipeline steel in onshore and offshore project,welded joints are recognized as the weak link in pipeline because of the non-uniform microstructural regions induced by welding heat input.At first,the microstructural of different regions in API X80 pipeline welded joints was characterized and quantified by SEM,which indicate that the pipeline steel is Production Casing Design ConsiderationsYp = yield strength of the pipe (example P110 is 110,000 psi) T = nominal wall thickness (inches) D = nominal outer diameter of pipe (inches) Per API,the calculated number is rounded to the nearest 10 psi.The 0.875 factor in the above equation represents the allowable manufacturers tolerance of minus 12.5% on wall thicknessPrevious123456NextMechanical Investigations of ASTM A36 Welded Steels with The in-service life of ASTM A36 welded steel pipes in power plants is often shortened by ash corrosion.During the heating condition,the ash deposition on the welded steel pipes gradually reduces the thickness of the pipes,thus,reducing the lifetime.Instead of replacing the pipes with new ones,the cost could be significantly reduced if the lifetime could be further extended.

Prepared for ExxonMobil Pipeline Company and the

Jul 31,2013 Fracture Surface Investigations of Api Pipes Welded With#0183;2.3.1.1 At the time the pipe was manufactured in 1947 and 1948,the specification in effect was API STD.5-L,10th Edition,August 1945.Per this specification,the smelting type of steel was reportedly Open Hearth Steel,the pipe was classified as an Electric Welded Pipe,and the strength was specified to meet Grade B requirements.Prepared for ExxonMobil Pipeline Company and theJul 31,2013 Fracture Surface Investigations of Api Pipes Welded With#0183;2.3.1.1 At the time the pipe was manufactured in 1947 and 1948,the specification in effect was API STD.5-L,10th Edition,August 1945.Per this specification,the smelting type of steel was reportedly Open Hearth Steel,the pipe was classified as an Electric Welded Pipe,and the strength was specified to meet Grade B requirements.NTSB Advisory National Transportation Safety Boardand the fracture origin and failure mechanisms.Investigators found that while the longitudinal seams on some of the pipe segments were fusion-welded from both inside and outside the pipe,some were fusion-welded only from the outside of the pipe.In order to understand this variance,investigators are in the process of researching pipe welding

Mechanical-Technological and Fracture Mechanical

Nowadays already a lot of large onshore-projects have been implemented for the steel X80 with,as it seems,fully satisfactory results.A lot of money is spent worldwide in finding the right joining process for the circumferential welds of these pipes and so a worldwide central collection of welding variables and efficient processing could result in a prediction of the mechanical properties MECHANICAL-TECHNOLOGICAL AND FRACTUREabout 285 HV10 occur.Interesting are the investigations for joining spiral welded pipes of different grades,X80 and X70 or lower.Noticeable are the peaks in the HAZ in the lower grade steel of about 320 HV10.The lower the steel grade the higher the values of the hardness in this case.further on to exit Austria to reach other European mar-MECHANICAL-TECHNOLOGICAL AND FRACTUREabout 285 HV10 occur.Interesting are the investigations for joining spiral welded pipes of different grades,X80 and X70 or lower.Noticeable are the peaks in the HAZ in the lower grade steel of about 320 HV10.The lower the steel grade the higher the values of the hardness in this case.further on to exit Austria to reach other European mar-

L.Zhang's research works East China University of

In this investigation,the mechanical properties and low-temperature fracture toughness of API 5L X65 offshore pipeline welded joints were studied. (FAD) method was applied to the pipe Investigation of Materials/Investigations of Properties JFE-TEC performs commissioned investigations of the material quality of iron and steel,stainless steel,cast iron,nonferrous metals (aluminum,copper,titanium,etc.),high alloys,rubber and plastics.We also evaluate various properties (workability,weldability,fracture toughness,creep,fatigue,corrosion resistance,wear resistance,magnetic properties,residual stress).Influence of Hydrogenation on Residual Stresses of 1.Introduction.High-strength low-alloy (HSLA) steels are widely used in the production of pipes for the oil and gas industry due to their mechanical properties of high strength,good toughness,and excellent weldability 1,2.Moreover,the electric resistance welding (ERW) manufacturing process of API 5L X65 steel pipes led to an increase in mechanical strength and toughness of the weld

Influence of Hydrogenation on Residual Stresses of

1.Introduction.High-strength low-alloy (HSLA) steels are widely used in the production of pipes for the oil and gas industry due to their mechanical properties of high strength,good toughness,and excellent weldability 1,2.Moreover,the electric resistance welding (ERW) manufacturing process of API 5L X65 steel pipes led to an increase in mechanical strength and toughness of the weld Images of FRACTURE SURFACE INVESTIGATIONS of AP imagesIntegrity assessment of API X70 pipe with corroded girth Dec 01,2016 Fracture Surface Investigations of Api Pipes Welded With#0183;The pipes were manufactured from two cuts of API X70 pipe that were 2.3 m in length,762 mm in diameter,and 15.9 mm in thickness to measure their burst pressure with weld caps.During this process,the internal pressure was increased at a rate of 0.25 MPa/min up to 19.6 MPa and at a rate of 0.15 MPa/min up to 28.44 MPa.Girth welding of API 5L X70 and X80 sour service pipesThe API 5L X70 and X80 pipes development for sour service application is very recent.Limited information can be found in literature about the girth welding of these materials.

Fracture toughness of the materials in welded joint of X80

Nov 01,2015 Fracture Surface Investigations of Api Pipes Welded With#0183;The above results indicate that the welding process resulted in embrittlement in the X80 steel welded joint,and the FZ is the fracture risk zone.The typical SEM photograph of the fracture surface of the HAZ in the SENB specimen is shown in Fig.13 .Fracture of Wrinkled Pipes Subjected to Monotonic Jan 20,2011 Fracture Surface Investigations of Api Pipes Welded With#0183;A recent field fracture and failed laboratory specimens under monotonic load history address the necessity of conducting a full-scale test program to better understand the complete post-wrinkling behavior and failure modes of wrinkled pipes under similar loading conditions.Fatigue life prediction of casing welded pipes by using casing pipe,made of API J55 steel by high-frequency welding,in order estimate its structural integrity and life.Based on the critical value of stress intensity factor K Ic ,measured in

Fatigue life prediction of casing welded pipes by using

casing pipe,made of API J55 steel by high-frequency welding,in order estimate its structural integrity and life.Based on the critical value of stress intensity factor K Ic ,measured in Fatigue crack propagation behaviour of pressurised elbow Sep 01,2020 Fracture Surface Investigations of Api Pipes Welded With#0183;Fatigue crack propagation behaviours of Z2CND18.12N austenitic stainless steel pressurised elbow pipes were studied under cyclic bending.The results show that the evolutions of crack depth with the number of cycles at both intrados and crown present logarithmic growth,while the evolutions of crack length with the number of cycles present exponential growth.Failure analysis of a Cross country line pipe using 'CTOD The fracture surface at the point of maximum opening and yielding was oberved under scanning Electron Microscope after ultrasonic cleaning.The fractograph indicated dicontinuities on the pipe inner surface (Fig.3).The depth of the dicontinuities were measured to be around 2.5mm (Max.).

Failure Investigation of Hydrotest Rupture on a Natural

Sep 06,2016 Fracture Surface Investigations of Api Pipes Welded With#0183;A land-based natural gas pipeline,API 5L Grade B pipe with an electric resistance weld (ERW),failed during hydrotesting inspection along the ERW seam,which led to further investigation.Linear indications,indicative of surface cracks,were observed on the outer diameter of the pipe below the fracture surface,made visible by fluorescent light.Using transmission electron microscopy,it was Experimental investigation of local tensile and fracture The aim of the paper is to evaluate the local tensile and fracture toughness properties of the dissimilar metal weld joints between SA508Gr.3 Cl.1 and SA312 Type 304LN pipe.Weld joints have been prepared by manual gas tungsten arc welding (GTAW) process with conventional Vgroove and automatic hot wire gas tungsten arc welding with narrow Experimental investigation of local tensile and fracture The aim of the paper is to evaluate the local tensile and fracture toughness properties of the dissimilar metal weld joints between SA508Gr.3 Cl.1 and SA312 Type 304LN pipe.Weld joints have been prepared by manual gas tungsten arc welding (GTAW) process with conventional Vgroove and automatic hot wire gas tungsten arc welding with narrow

Effects of Weld Geometry Size on the Pressure-Bearing

Jun 01,2020 Fracture Surface Investigations of Api Pipes Welded With#0183;The weld geometry and shape of the weld joint are important factors that affect the mechanical properties of the pipe.In this work,two-dimensional (2D) and three-dimensional (3D) finite element models (FEMs) of a large-diameter,heavy-wall API X80 LSAW pipe were established,and the stress distribution of the pipe was calculated to simulate Cited by 7Publish Year 2016Author Kyu Jung Yeom,Woo Sik Kim,Kyu Hwan OhStudy on Fracture Properties of High-densitypipes,which are widely used in transport the water,gas and corros ive liquid.Investigation shows that one of the failure modes of HDPE pipe is the crack slowly gr ows across the thick direction and leads to failure at last,so that it is very important to study the resistance to crack initiation of HDPE pipe and its butt-fusion welded joint.Cited by 5Publish Year 2019Author Arnab Karani,Soumyajit Koley,Mahadev ShomeFracture Toughness of Different Locations in API X80 With the considerable use of high-grade pipeline steel in onshore and offshore project,welded joints are recognized as the weak link in pipeline because of the non-uniform microstructural regions induced by welding heat input.At first,the microstructural of different regions in API X80 pipeline welded joints was characterized and quantified by SEM,which indicate that the pipeline steel is

Cited by 1Publish Year 2016Author Hong Sheng Lu,Yong He Yang,Gang Chen,Xu Chen,Xin WangFailure analysis of the oil transport spiral welded pipe

Oct 01,2012 Fracture Surface Investigations of Api Pipes Welded With#0183;The spiral welded pipe for transporting oil was made from API 5L X52 steel.The pipe diameter is 720 mm with 810 mm wall thickness.The weld joint is a double V type.The outside and the inside welds were made by submerged arc welding with 60 Fracture Surface Investigations of Api Pipes Welded With#176; welding angle.The pipe maximum working pressure is 3.8 MPa with 3060 Fracture Surface Investigations of Api Pipes Welded With#176;C working temperature Author V.S.A.Challa,I.V.S.Yashwanth,Kayna Lee Mendoza,Stephen StaffordPublish Year 2016Failure of electric resistance welded API pipes Effect Feb 01,2019 Fracture Surface Investigations of Api Pipes Welded With#0183;The chemical composition and mechanical properties in Table 1,Table 2 suggest that the pipes correspond to API 5L standard [].The microstructure changes in the weld zone after normalizing is represented by the optical micrographs shown in Fig.3.In the as welded condition the microstructure comprises of widmanstatten ferrite and bainite which after normalization transforms into ferrite and Applying Fracture Mechanics to Address Emerging Issues in The tool was developed to analyze axially oriented cracks present in pressurized steel cylinders with a wide range of material properties (yield strength,flow stress,fracture toughness) and pipe/flaw geometry (diameter,wall thickness,through-wall or surface crack,crack length and

API 5L X65 Seamless and Welded Line pipe Specification

Many PSL2 pipe sizes and grades require CVN.Seamless pipe is to be tested in the body.Welded pipe is to be tested in the body,pipe weld and heat-affected zone.Refer to the full API 5L specification for the chart of sizes and grades and required absorbed energy values.Surface.All surfaces have been 100% visually inspected.API 5L Pipe Specification (Updated on 2020) - Octal Steel1928 First API 5L standard for manufacturing line pipe appears,covers furnace butt-welded pipe,furnace lap-welded pipe,seamless pipe.Minimum YS 172 Mpa 25000 psi,maximum 310 Mpa 45000 psi.Including material for three Grade A25,A,B,minimum yield strength was

Get In Touch

We receive enquiries in English, Español (Spanish). Our professional team will reply to you within one business day. Please feel FREE to contact us!

Top