coupling blanks

Tianjin Jinggong Metal Products Co.,Ltd. is a high-tech enterprise integrating product design, production, sales and technical service. Company is mainly engaged in produce Oil Country Tubular Goods (OCTG), coupling, pup joint, coupling stock (1st class agency of BAOTOU STEEL, TPCO, HYST and BAOSTEEL), coupling blank and Oil filed service. Company has been certified to ISO9001, ISO14001 and API 5CT and owns complete inspection and test methods and security system. Head office located in Tianjin (In North China' s Largest Port City), where there is the biggest steel production base, which would be very convenient for you to fulfill purchasing task.

Coupling stock made in China famous steel maker :
BAOTOU STEEL ,TPCO,Hengyang Valin Steel,BAOSTEEL,ANSTEEL ect .

Name Coupling Size OD mm Thickness mm

Tubing coupling
stock 1.9"   NUE 57 9.5
1.9"   EUE 64.5 11.5
2-3/8" NUE 73.02 12
2-3/8" EUE 77.8 12
2-7/8" NUE 88.9 12.5
2-7/8" EUE 94 13
3-1/2" NUE 107.95 15
3-1/2" EUE 114.3 15
4"     NUE 120.65 15.5
4"     EUE 127 15.5
4-1/2" NUE 132.08 15
4-1/2" EUE 141.3 16.5
Casing Coupling
stock 4-1/2" 133.35 17
5" 147.32 18
5-1/2" 160.02 18
6-5/8" 187.71 18
7" 200.03 18.8
7-5/8" 215.90 19
8-5/8" 244.48 20.3
9-5/8" LTC 269.88 21
9-5/8" BTC 269.88 21
10-3/4" STC 298.45 21
10-3/4" BTC 298.45 21
11-3/4" STC 323.85 19
11-3/4" BTC 323.85 19
13-3/8" STC 365.12 21
13-3/8" BTC 365.12 21
16"     STC 431.8 20.3
16"     BTC 431.8 20.3
18-5/8" STC 508 24.5
18-5/8" BTC 508 24.5
20"     STC 533.4 20
20"     BTC 533.4 20