331 U Type Tube For Heat Exchanger

Our products are produced by TIG without any extra material. The welding quality is reliable. We use special moulds to ensure stable welding process and high-precision product size. We can produce special specifications of welded tubes. The welded tubes are tested by ET 100% or pressure test(leak test) 100% and then inspected by VT 100%. We strictly control the product quality and delivery time, have competitive price in the same industry.Our products can completely meet the standards of ASTM, ASME, EN, DIN, JIS , GB and etc.