... aerating heaters. Available Products and Specifications at CHAOWEI:Pipe, Tube - BS3074NA13 (Tube), ASTM B 163 ... Welded Pipe), ASME SB 829 (Seamless Pipe and Tube), SAE AMS 4574 (Seamless Tubing), DIN 17751 (Pipe and ... Tube), VdTÜV 263 (Sheet, Plate, Bar, and Tubing)Bar, Rod ... Forgings), VdTÜV 263 (Sheet, Plate, Bar, and Tubing), QQ-N-281 (Plate, Sheet, Strip, Bar, ...