Henan Shenlong Petroleum Drilling Tools Co., Ltd is one of the most professional manufacturers of downhole drilling tools with API certificate in mailand China. Our product range covers drill collar, heavy weight drill pipe, stabilizer, kelly, non-magnetic produts and drill stem subs. We can also provide plain end drill collar bar and stabilizer forging upon customer requirement. Qualified and efficient employees, advanced and relatively integrated facilities and strict inspection procedure with latest testing equipments, all of these combine to gurantee high quality product and on-time delivery. Our products have been used and widely recognized by both Chinese and overseas oilfields and we enjoy the reputation of trustworthy manufacturer of high quality oilfield drilling tools. We are totally committed to high quality product and customer satisfaction. We welcome your inquiry any time.