We are leading drill pipe/collar manufacture from China. Jiangsu Rontech Petroleum Technology Inc has been engaged in drilling tools business since 2007 and built our own factory in 2008. So far we have established a kind relationship with many drill pipe/collar/HWDP distributors and end users both domestic and worldwide. we are now capable of an annual output of 50,000 tons of drill pipes ranging from 2 3/8" to 6 5/8" with different tool joint connection options like NC, IF, FH,REG etc. Being different from conventional drill pipe processors, we are fully-integrated manufacturer from Green pipes&＃39; upsetting to tool joints&＃39; hard banding and hence we implement a full line quality assurance system from arrival to departure of our pipes. Meanwhile, we can produce 10000 pieces of slick & spiral drill collars from 3- 1/8" to 14"annually. We are equipped with advanced QC instruments which are imported from German. Our QC systems were managed in accordance with API RP7G and NS-1. Our raw materials are all sourced from the best steel mills in China, like TPCO and Xingcheng Steel.