1.OD:2 3/8"-6 5/8" 2.Grade:E,X,G,S 3.Upset:IU,EU,IEU 4.HB:Arnco100XT,150XT,300XT, ... Botn1000,3000 5.IPC:TC2000,TK34 For ... . Our API drill pipes are of high physical property, for their strictly controlled processing of sulphur and phosphorus.To ensure ... 14001, OHSAS 18001, Arnco Hardbanding Certificates and so on. 2 3/8--5 1/2 drill pipe