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Tianjin Coupling Heat Treatment Co.Ltd
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About Us
This is Tianjin Coupling Heat Treatment Co.LTD, a company manufactures tubing and casing couplings. Our products range from 2-3/8 to 13-3/8 of J55,K55,L80.N80,C90,T95 and P110 steel grade. We produce short round thread casing, long round thread casing, buttress thread casing and external upset tubing.
Our company has already got the API 5CT certificate and the products have been sold to many oilfields both in China and overseas, which are of high reputation.
We also engage in steel pipe ...
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