Spiral duct insulation pipe

performance index：

1. Working steel pipe: seamless steel pipe, spiral seam double-sided submerged arc welded steel pipe, straight seam welded pipe, etc., steel pipe material: steel grade 20, Q235B, L290, etc.

2. polyurethane foam insulation: density 60kg/m ³， The temperature of conveying medium is - 50-140 ℃. After the certification of CCOT, the temperature resistance is 140.6 ℃.

3. Spiral duct: generally galvanized iron sheet, good corrosion resistance, neutral salt spray test up to 240 hours.