... kinds of dowel pins,sheel pin, double cone pin, Casing head forging, tubing head forging, casing spool forging, tubing spool forging, three ... -way, six-way forging, eight-way forging, valve body forging, double-flange ... Forging Co.,LtdTel: 0086-13853179742Fax: 0086-0531-83861079 double cone pin (Forging blank&finish machining) for drilling rig