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API 5CT N80 3 1/2 eue tubing couplings

All products will be made according to API and related international standard as per customers' requirements.

Std Ref.:API 5CT and 5B ISO9001,2008

1.Grade:J55, K55, N80-1, N80-Q, L80, C90, P110

2.We also supply permium thread products by customer's request

3.Size: tubing coupling from 1.9" to 4-1/2",Casing coupling from 4-1/2" to 20"

4.Type: NU, EU(tubing coupling), STC,LC,BTC(casing coupling).

5.Surface treatment: Whole phosphating, or inside phosphating and outside coating



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