Double wall Welded steel bundy tubeShaanxi Yongrui Industry Co.,Ltd,we’re leading manufacture of steel bundy tube . We has specialized in manufacturing steel tubes for automobiles and appliances for over 22 years.Our main product is Double wall welded steel bundy tube.It’s made by steel strip with c

Bundy tube, sometimes called Bundy pipe, is a type of double-walled and single-walled low-carbon steel tube manufactured by rolling a copper-coated steel strip through 720 or 360 degrees and resistance brazing the overlapped seam in a process called Bundywelding. Applications:Automotive parts (Fuel