ed. API Spec 5L "Specification
for Line Pipe".
Changes from the previous edition include the following:
•updated and expanded requirements for mill jointers (differentiate between double-jointers
and mill jointers; avoid welding consumables environmental contamination; require
qualification standards; new process testing requirements; clarify offset and
undercut requirements; standardize marking requirements; reference weld repair
•updated requirements for pipe end squareness; updated requirements for hardness
testing on PSL 2 pipe for sour service and PSL 2 pipe for offshore service;
•a new annex for strain-based design requirements (PSL 2 pipe for applications
requiring longitudinal plastic strain capacity).