... rough machining,modulation, finish machining), tubing head forging, casing spool forging, tubing spool forging, three-way, ... six-way forging, eight-way forging, valve body forging, double-flange joint forging, locking coupling ... LtdTel: 0086-13853179742Fax: 0086-531-83861079 casing head, casing head forging blank(Normalize, rough machining, ...