We can produce the Gas cylinder project, such as the 4130 Steel Pipe, 4140 steel pipe,4142 steel pipe,4145 steel pipe and 4147 steel pipe. Chengde is the first company to acquire the certificate of gas cylinder steel and supplied more than 160 thousand tonnage in last ten years, and our main reference list as follow:
Customer Material Size range Quantity (MT) Enric 4130/4130x (406~720)*(10.3~27.5)mm 135,000 Enric 4142 (559~615)*(9.8~28.9)mm 2542 Enric SA372 J70/E70 (559~610)*(21.3~33.6)mm 3114 NK 4130/4130x (559~720)*(14.2~29.4)mm 20,500 NK/CPI/FIBA 4142/4145/4147 (406.4~609.6)*(12.7~39.42)mm 3994 NK SA372 J70/E70 610*29.4 mm 464
The Piercing and rolling technology of Chengde possesses a number of patents in designing and manufacturing the equipment, and has improved in lots of areas targeting better performance and efficiency, which has distinguished itself from the peers.
Stable, fast and continuous
Flexible on non-standard sizes
Swift tooling switching
Uniform mechanical properties and dimensions in Longitudinal & Transversal directions