... forging, tubing spool forging, casing spool forging, API tubing hanger (forging blank&finish machining) with thermal refining.We are ... body forging, double-flange joint forging, locking coupling forging, and so on. Materials are: 4130 4140 1040 1030. with ... shipbuilding, pharmacy, metallurgy, water conservation, power plant, pipe accessories and so on. Welcome to contact me for further discussion.Paul ...