1) Tubing

Specifications: 2-3/8-4-1/2, see the specification table for details.
Steel grades: H40, J/K55, N80-1, N80Q, /L80, P110, C90, C95, T95, Q125, 80S, 80SS, 90S, 90SS,
L80-3Cr/9Cr/13Cr/28Cr, etc. In addition, there are specific steel grades independently developed by TPCO, Shanghai Baosteel and Henggang, such as TP110, TP110S, TP95S, etc.
Material: 25MN2, 36MN2V, 35MN2V, 34CRMO, 30CRMNMO, etc.
2) Casing: Casing, 
Casing, put outside the oil pipe to protect the oil pipe from external damage. 
Size: 4-1/2-20”. 
Material: 25MN2, 36MN2V, 35MN2V, 34CRMO, 30CRMNMO, etc. 
Steel grade: H40, J/K55, N80-1, N80Q, /L80, P110, C90, C95, Q125, 80S, 80SS, 90S, 90SS, L80-3Cr/9Cr/13Cr/28Cr, etc. Usually, when customers inquire, they only write the steel grade, not the material. 
Buttress type: short round button STC (short thread connection), 
Long round button LTC (long thread connection), 
Buttress thread connection BTC (buttress thread connection).
3、Coupling
4、Pup JIONT
5、X-Over or Cross Over
 HYD-PH6,HYD-CS, FOX, APEX, TP-G2, TP-CQ,
TP-FJ,BG-T1，BG-T2，BG-T3,VAGT, HYD-511, OTTM,,CBS3,3SB,HSM-2
WhatsApp：+8618698052733