... oil and gas drilling tools,OD :2 3/8, 2 7/8, 3 1/2, 4,4 1/2, 5inchGrade:E75, ... , G105, S135,X95Specification OD2-3/8 '' - 5 1/2" Internal CoatingTK34,TC2000,TC3000HardbandingARNCO 100XT,200XT,300XT,BOTN3000,ARMACORMLengthR1 ... stand out beacuse of the points as follows:1. Longway is a real manufacturer of drill pipes ... strictly meeting API 5DP and ISO 9001:2008.4. Longway has the reasonable price in the ...