Tubing coupling
Specification API 5CT 1.9" to 4-1/2"
Steel grade J55, L80, N80
Thread type EUE, NUE
Casing coupling
Specification API 5CT 4-1/2" to 20"
Steel grade J55, K55, L80,N80, P110
Thread type STC, LTC, BTC
Contact:Bonnie Xu
Email:BonneXu@dlpoctg.com
Mob/Wechat:86+13602055205
SKYPE:BonnieXu22
Linkedin:BonnieXu