oilfield couplings 5-1/2" K55 LTC

oilfield couplings 9-5/8" K55 BTC

oilfield couplings 13-3/8" K55 BTC

9 5/8" LTC P110 couplings 

oilfield couplings 2-7/8" L80 EUE

L80 oilfield couplings  13-3/8" 

7" K55 LTC couplings 

oilfield couplings 5-1/2" P110 LTC

oilfield couplings 9-5/8" P110 BTC

oilfield couplings 13-3/8" P110 BTC

API Coupling J55 K55 N80 P110

 1.Size:1.9" to 20" 
2.Grade:J55,K55,N80-1,N80Q,L80-1,L80-9Cr, L80-13Cr,C90,C95,T95,P110,Q125 
3.Standard: API Spec 5CT and Agree 

  api 5ct coupling

1.O.D: 2-3/8"-20" 
2.Grade:J55 K55 N80  P110 ect 
3.Thread :NU EU STC LTC BTC
4.Standard: API 5CT