Oil casing pipe

1)Size: OD: 2-3/8~13-3/8

2)Grades: N80, J55, K55, L80

3)Standard: API 5CT & 5B

4)Thread type: STC, BTC, LTC

We have implemented stringent quality control tests system to inspect raw materials and examine products in every stage of the production :
*Size and surface inspection
*Non-destructive test
*Thread inspection
*Hydrostatic test
*Drifting test
*Physical and chemical analysis
*Hardness and pressure test