Al-Mg-Mn Alloy Sheet for building ,The corrugated steel sheet is made by cold-rolled steel plate, electro-galvanized steel plate, hot-dip galvanized steel plate or galvanized steel plate as substrate after surface degreasing, phosphating, chromate treatment, and coated with organic coating. .
channel steel is the long shape steel that with cross section of groove shape . channel steel belongs to the building use and mechanical use carbon structural steel ,is a complex section steel ,its section shape is slotted . channel stell is mainly used for building structure,curtain wall engineering ,mechanical equipment and vehicles manufacturing1
C channel is made of galvanized steel strips by the method of cold-bending formed.The surface treatment is galvanized or bared. It has many advantages compared with traditional structural steel, such as light weight, excellent performance cross-section, high-strength and so on.