plastic composite API thread protector for casing and tubing Product quality: Completely accord with trade standard of SY/T5991-94. The products is smooth, no discontinuous screw thread, no impurity, no slip, and no felting with screw thread of steel tube, and can be applied ...

Dongying Lake Petroleum Technology Co., Ltd.    [Minerals & Metallurgy]   [Metal & Metallurgy Machinery Parts]   [2020-04-11 14:43:42 ]