Brand Name

China Petroleum Equipment

Model Number

1.9"-20"

Type

Coupling

Machine Type

Oil production

Certification

API

Material

Alloy steel

Processing Type

Turning

Surface treatment

Whole phosphating, or inside phosphating and outside coating

Usage

Internally threaded cylinder for joining two lengths of threaded casing pipe

Specification

4-1/2", 5", 5-1/2", 6-5/8", 7", 7-5/8", 8-5/8", 9-5/8", 10-3/4", 11-3/4", 13-3/8", 16", 18-5/8", 20"

1.9", 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2"

Steel grade

J55, K55, L80, N80, P110

J55, L80, N80

Thread type

STC, LTC, BTC

EUE, NUE