Standard: API 5L;
Grade: X52 or L360;
Level: PSL1 and PSL2;
Type: LSAW or SAWL or DSAW;
Outer Diameter: 350 � 1500;
Schedule: SCH40, SCH80, SCH100, SCH120, etc.;
Identification: STD (standard), XS (extra-strong), or XXS (double extra-strong);
Payment: T/T,L/C;
Price: Contact us to get a free quote from China factory.