Standard: API 5B.
Sizes range from 2 3/8" to 20"
Steel grade including: K55, j55, l80, n80, c90, t95 and p110.
Thread types: Nu, EU, stc, ltc and btc
Quality is fully guaranteed
Application: Casing connection and tubing connection
We promise you the best competitive price, the best quality and the lead delivery time.
Welcome your freely contact.