Shaanxi Yongrui Industry Co.,Ltdissteel pipe nutsmanufacturers and suppliers in China who can wholesalesteel pipe nuts.We provide double wall steel tubing for brake & fuel lines, transmission lines of the vehicle; Our single wall tubing is also used in a variety of refrigerator core circuit components such as condensers, hot pipes, suctions, dryers, and capillaries. If you interested insteel pipe nuts, please contact us. You will have an exclusive service inShaanxi Yongrui Industry Co.,Ltd. OEM, ODM,customized according to demands, design and others, please email us and tell us detail needs. Have been in the market for over 20 years, Our tubing achieved Standards SAE J-526, SAE J-527, ASTM A-254, JASO M 101, GM123M/124M.