API adapter flange ( forging blank&finish machining), tubing spool forging, wellhead equipment forging, stable quality. API adapter flange ( forging blank&finish machining), Dual flange casing head( forging blank&finish machining)We are professional manufacturer of oil equipment forging in China, our product include: Casing head forging, tubing head forging, casing spool forging, tubing spool ...