The main products: API-5CT oil casing, oil tubing, tubing pup joint, Tubes'coupling, Lengthening type oil pipe coupling, Change diameter type tubing coupling, Conversion type, change button type, oil sleeve buckle, super 13Cr, 28Cr API 5D oil casing pipe, drill pipe thread protector, pipe support API wire, 5L pipe, alloy pipe, precision cold drawn seamless steel pipe, elbow, pipe tee, flange
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