Diamond Core Bit Companies in the Hardware / Industrial Products from All Countries

Hebei Goldman Petroleum Drilling Engineering Co., Ltd. is a professional technology-oriented enterprise specialized in the production drilling equipments and tools,which is one of the leading corporations of drilling tools and workover fishing tool manufacturing industry. Including three series with full model types,as follows: Drilling Bit series: rock roller bit,tricone bit,pdc drill bit,single cone bit,PDC bit,drag bit and hole opener; Drilling Equipment Parts series: manual tong,elevator,s.....