波紋鋼 Z パーリン 屋根 Q235 Q355 冷式 ローリング Z セクション 鋼

High Load Bearing Corrugated Cold Rolled Steel Profile For Warehouse Concrete Floor Bearing Plate Product Description Wave Cold Formed Steel Deck, is a customized special cold rolled profile made of premium Q235 carbon steel coil via continuous room-temperature cold bending forming. Different from ...