螺旋风管在市场上使用材料的规格:
Specification of materials used in the market of spiral air duct:
（1）材质常用镀锌铁带（俗叫星铁），不锈钢带，软铝带。
(1) the material is usually galvanized iron belt (commonly known as Star iron), stainless steel belt and soft aluminum belt.
（2）材料厚度：0.3至1.2毫米
(2) material thickness: 0.3 to 1.2mm
（3）材料宽度：125毫米
(3) material width: 125mm
（4）制管直径φ100至φ1500毫米（直径与厚度适当配合）
(4) pipe diameter φ 100 to φ 1500 mm (diameter and thickness shall be properly matched)