 Origin |
China |
| Model Number |
|
| Grade |
J55, K55, N80, L80, P110,Q125 |
| Length |
R1,R2,R3 |
| Specification |
4-1/2"~20" |
| Technique |
Seamless |
1.Size: 4-1/2"~20"
Steel grade: J55, K55, N80, L80, P110,Q125
Thread Type: LTC,STC,BC
Production Standard :API SPEC 5CTãAPI SPEC 5B
Quality Control:ISO9001
2.Quality control
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
|
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