... provide casing head, casing head forging blank(Normalize, rough machining,modulation, finish machining), valve body forging, Our product include:casing head, ... casing head forging blank(Normalize, rough machining,modulation, finish machining), tubing head forging, casing spool forging, tubing spool ... head, casing head forging blank(Normalize, rough machining,modulation, finish machining)