Steel Flat Corrugated Duct Sheet Metal Flat Duct

1. Type: Round and Flat metal ducts;

2. Color: black and galvanized;

2. Thickness: 0.25-0.35mm

3. Dia.: 35mm-130mm;

4. Length: 2.2M/PCS,5.8M/PCS

5. Application: It's mainly used as the prestressed concrete structure, such as the large span railway and highway, bridge, crane girders, rock-soil anchoring engineering, multi-floor industrial plant, coal, sports