I developed the design and production of the tubing, casing thread protectors, products specially formulated polyethylene as raw material thread protectors, composite and steel skeleton, with excellent impact resistance, anti-off resistance, dimensional stability, low temperature sex, the performance standards are in line with API 5CT, I produced the tubing thread protectors into two plastic composite and pure plastic structure, in the form of casing protection structure is plastic composite oil extraction rod thread protectors , plastic composite structure mainly for export, pure plastic structure is mainly used for domestic, our thread protector sleeve thread protectors complete specifications, beautiful appearance, excellent performance, products have been widely sold at home and abroad, widely praised by users. Internal thread and external thread protectors should be self-locking, and resistance to vibrations generated during transport. Protectors and breakout torque requirements refer to the manufacturer's procedures thread protectors, positive Tong machinery, casing thread protectors provided by Ning County is Tong Machinery Plastic Co., Ltd. "Fuk Loi wheel, omni-directional wheel, universal ball, wheel and other two-way" preferred Ning County is Tong Machinery Plastic Co., Ltd. (www.dzztjx.com), the company is located: Galaxy Ningjin County Economic Development Zone, over the years, is Tong machinery to provide customers with the best quality service, contact: song manager. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Positive Tong mechanical expect to be your long-term partner!