High mechanical properties drill pipe: Grade:DZ50,E75,X95,G105,S135,R780 OD: ... API drill pipes and joints. Detaild Product Description:High mechanical properties drill pipe :Grade:DZ50,E75,X95,G105,S135,R780OD of ... .0335.795.000127.0 mm0.50012.70 mm High mechanical properties drill pipe