Started in 1994.Main products are drill pipe,drill collar,heavy weight drill pipe,non-magnetic drill collar,kelly,drill pipe body,lift sub,crossover sub,pup joints,ect.Has obtained API 5DP,API 5CT,API 6A,API Spec 7-1,ISO9001:2008,NS-1,GOST,ARNCO,TCSTI,TCS8000,ARMACOR M,OTW-12 AND DURABAND NC Certificates.It's also the Grade One Network Supplier of Sinopec and CNPC