... dowel pins,sheel pin, double cone pin (Forging blank&finish maching) for drilling rigs We are professional manufacturer of ... all kinds of dowel pins,sheel pin, double cone pin, Casing head forging, tubing head forging, ... for further discussion.Paul JingSales managerZhangqiu Baohua Forging Co.,LtdTel: 0086-13853179742Fax: 0086-0531-83861079 double cone pin (Forging blank&finish machining) for drilling ...