Tianjin Coupling Heat Treatment Co., Ltd. (TCPL for short) is a professional manufacturer of casings and tubing couplings. We have already attained API 5CT certification. Our products range from 2-3/8" to 20" with steel grade of J55, K55, N80, L80, C90, T95 and P110. Thread types include STC, LC and BTC. Couplings manufactured by TCPL have high quality. Our products have been applied to many oil fields and pipe processing mills, granting TCPL with a fine reputation in this industry.
We are also a provider of coupling stocks, casings, tubing and seamless steel pipes of various sizes of API 5CT, API 5L and ASTM A 106.GR.B. Our pipe products have been exported to many foreign countries. Our reasonable prices, good credit and sincere attitude have won trusts from a lot of customers.
We look forward to establishing cooperative business relationship with you.