Girth welding trials involving pipes of minimum proof strength 690 MPa (X100) from several linepipe manufacturers have been conducted. Welding consumable selections for the trials were based on background data generated at Cranfield University coupled with potential weld metal mechanical property requirements thought necessary for the implementation of X100 pipeline steels. Mechanised pulsed gas metal arc welding (PGMAW) and semi-automatic/manual welding procedures were used to generate mechanical property data of mainline girth welds, tie-ins and repairs using equipment and procedures as close to current field practice as possible. The trials showed no detrimental weldability issues for the X100 steels examined. Testing comprised tensile, toughness (CVN and CTOD), hardness, side bend and nick break data generation, using pipeline welding specifications where possible.
Girth welding of X100 pipeline steels
2002
8 Seiten, 9 Quellen
Conference paper
English
X100 - girth welding, joint properties and defect tolerances
Tema Archive | 2005
|Structure and properties of X80 and X100 pipeline girth welds
Tema Archive | 2004
|Assessment of properties and microstructure of X100 pipeline girth welds
Tema Archive | 2005
|Welding with high power fiber laser API5L-X100 Pipeline steel
Tema Archive | 2009
|Laser based girth welding technologies for pipeline construction
Tema Archive | 2011
|