Product details

We provide casing couplings from 4-1/2″ to 20″, in grade J55, K55, N80, L80 and P110.

Threads are used as mechanical means to hold the neighboring joints together during axial tension or compression. For all casing sizes, the threads are not intended to be leak resistant when made up.

The round-thread (STC or LTC) casing-joint strength is given as the lesser of the fracture strength of the pin and the jump-out strength.

1. Size: 4-1/2″ ~ 20″
2. Standard: API 5CT/5B
3. Type: STC
4. Grade:J55/K55/N80/L80/P110

Quality Assurance

1. Manufacture License and Certificate is a must.

2. We gave our Qualified Quality Engineer supervision in the factory for each PO.

3. On site checking before shipment is warm recommended.

4. Quality Target: To Control, find and solve quality issues before reaching the customer