... Confirmrd Specifications Drill Pipe Size:2 3/8', 2 7/8',3 1/2',4',4-1/2' ,5'1/2' Grade :E75,X95,G105,S135 Operative Standard:API SPEC 5D,API SPEC 7 API 5D Drill Pipe Grade ... :E75,X95,G105,S135Size:2 3/8', 2 7/8',3 1/2',4',4-1/2' ,5'1/2' Operative Standard:API SPEC 5D,API SPEC ...