... , process vessels and piping, boiler feed-water heaters and other heat exchangers, and de-aerating heaters. Available Products and Specifications at CHAOWEI ... Tubing), DIN 17751 (Pipe and Tube), VdTÜV 263 (Sheet, Plate, Bar, and Tubing)Bar, Rod, Wire, and Forgings - BS3075NA13 (Wire), ... DIN 17753 (Wire), DIN 17754 (Forgings), VdTÜV 263 (Sheet, Plate, Bar, and Tubing), QQ-N-281 (Plate, Sheet, Strip, ...