Light steel keel divided into several
The main specifications of the ceiling keel are divided into D38, D45, D50 and D60. (2) Product marking method The marking order of light steel keel is: product name, code, width of section shape, height, thickness of steel plate and standard number. Such as cross-sectional shape of "C" type, width of 50mm, height of 15mm, steel plate thickness of 1. Smm of the ceiling keel marked as: building light steel keel DC 5 0 XIS XI. SGBllg sl (3) appearance quality light steel keel shape to be smooth, angular, cut not allowed to affect the use of burrs and deformation. Galvanized layer is not allowed to have skin, from the tumor, shedding and other defects. For corrosion, damage, dark spots, pitting and other defects, according to the provisions of the method should be tested in accordance with the provisions of Table 2-81. Appearance quality inspection, should be 0.5m away from the product under the conditions of bright light, the visual inspection. Light steel keel surface should be galvanized rust, the double-sided galvanized: excellent not less than 120g / m * m, first-class goods is not less than 100g / m * m, qualified products not less than 80g / m *
Light steel keel according to the use of hanging keel and cut keel, according to cross-section of the form of V-type, C-type, T-type, L-keel. 1) Product specifications series of keel main specifications are divided into Q50, Q75 and Q100.
