... HB:Arnco100XT,150XT,300XT, Botn1000,3000 5.IPC:TC2000,TK34 For more than 40 years, we've been exploring and developing ... upon producing various oil drilling tools including Drill Pipe, Drill Collar, Heavy Weight Drill Pipe, Kelly,Pup Joint and so on. Our ... API drill pipes are of high physical property, for their strictly ... so on. 2 3/8--5 1/2 drill pipe