工艺方法：冷拔或起毛
表面处理：退火或冷轧
壁厚：2.77〜45mm或定制
外径：21.3至530mm或定制
欢迎定制长度
适用于锅炉和热交换器

Process method: cold drawn or pilgered
Surface finish: annealed or cold pilgered
Wall thickness: 2.77 to 45mm or customized
Outer diameter: 21.3 to 530mm or customized
Customized lengths are welcome
Suitable for boiler and heat exchanger