To do a span of 11 meters of the door frame, with light steel keel can do it
Inappropriate, light steel keel normal length is 3-4 meters, if the convergence of words, it is not strong ~
Light steel keel there are a variety of, to do a span of 11 meters of the door frame is what kind of door ah, how high ah, depends on how you use it to give you a specific answer ah, you better can say more specific!
I suggest you use the channel, how much I can not say, because I do not know its use ~!
Appearance Quality Light steel keel shape to 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 products not less than 120g / m * m.
Light steel keel according to the use of hanging keel and cut keel, according to cross - section form V - type, C - type, T - type, L - shaped, U - keel.
Light steel keel mark the order of the order: product name, code, cross-sectional shape of the width, height, plate thickness and standard number. Such as the cross-section shape of "C" type, width of 50mm, height of 15mm, steel plate thickness of 1.5mm ceiling keel marked as: construction with light steel dragon.
Can ah, you can use a keel called Ou Cheng, it is not equal to the vertical, you can increase the strength of the deduction. And then cross the border with the use of double keel, the middle with a vertical keel reinforcement. Because the length is longer, the crossbar along the top of the skull in the installation, the boom density is stronger. When the door frame is broken, the vertical height will be longer than the actual height. The height of the corner will be cut with the keel and then folded back and connected along the skull, so that its strength will increase.
