... equipment 2,Length:R1,R2,R3 3,OD: from 50mm to 127mm 4,Grade:G105,R780,S135,E75,X95 Shijiazhuang LongWay Petroleum ... Drill Tools Co., Ltd is a company that especially manufactures kinds ... of petroleum drill pipes and joints.1,Name: drill ... ,G,S0.50012.70EU,IEU drill pipe equipment