Tool Steel, High Speed Steel, Corrosion Resistant Alloy manufacturer / supplier in China, offering OCTG API 5CT Eue H40 L80 C90 Seamless Steel Well Casing Pipe and Tubing, L80 N80q P110 Seamless Pipe Casing Tubing Bc/LC, Casing Pipe/Tubing Pipe/ Coupling/Threaded Protector--Oilfield Service (API-5CT) and so on.
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