Oil Casing Coupling

Casing Coupling is used to connect two casing pipes.

Size: 4-1/2"-20"

Grade: J55, K55, N80, L80, P110, 9Cr, 13Cr

Standard: API 5CT, API 5B, GOST

Thread: BTC, LTC, STC

( BTC-Buttress Thread, LTC-Long Round Thread, STC-Short Round Thread)