xian reliance petroleum machinery is a company supply petroleum machinery company. our product line is : drill pipe ,drill collar, drilling jars, fishing jars, bumper subs,etc.

Both manufactuer and distributor, specialize on tricone bit, PDC hole opener, drag bit related drilling tools& equipments. Good reputation with public praise, adequate stock prompt delivery, competitive price optimized solutions. Don't be hesitated, contact us immediately! ...

Jiyuan Beifang Drilling & Rolling Co., Ltd. is the subsidiary company of Zhongyuan Special Steel Trading LLC., established in 2001. We focus on manufacturing oil drilling tools and machinery parts. Our main production covers non-magnetic drill collars, stabilizers, moulds for ductile iron ...