In fact, in order to better use, the specification and model of the cable tray must meet the design requirements, with complete accessories, and galvanized standard parts should be used for the tray and accessories, accessories and fasteners. Next, Jinan cable bridge manufacturer will tell you about the appearance inspection of the bridge.
The packing list, product certificate and ex factory inspection report shall be provided in the packing box of bridge products. The thickness of tray and ladder plate shall meet the provisions in table 2.6. The surface anti-corrosion coating materials shall conform to the provisions of current national standards.
The plating surface of hot-dip galvanized tray and bridge shall be uniform, free of burr, overburning, ash hanging, scars, local non galvanized (diameter more than 2mm) and other defects, and there shall be no zinc tumor affecting installation. The plating of the thread shall be smooth, and the bolt connection shall be able to be screwed in.
The surface of zinc layer of electro galvanizing shall be smooth, uniform and dense. There shall be no peeling, bubble, flower spot, local unplated, scratch and other defects.
The spraying shall be flat, smooth, uniform, free of peeling, bubbles and blisters.
The weld surface of the bridge shall be uniform and free of defects such as missing weld, crack, slag inclusion, burn through and arc crater.
The hole diameter of the bridge bolt can be 2mm larger than the screw diameter when the screw diameter is not larger than M16.
Allowable deviation of bolt connection hole spacing: the spacing between two adjacent holes in the same group is ± 0.7mm, and the spacing between any two holes in the same group is ± 1mm; The distance between the end holes of two adjacent groups is ± 1.2mm.
Expansion bolt: it shall be selected according to allowable tensile force and shear force; It can be accepted as planned, and the thread should be intact.
The cable shall be provided with certificate of conformity and "CCC" certification mark, and a copy of "CCC" certification; Specification, model, voltage grade, length and date of manufacture shall be marked on each reel of cable, and the cable shall be in good condition.
The appearance of the cable is intact, the armor is free of rust, mechanical operation, folding and distortion. The oil immersed cable shall be well sealed without oil leakage and seepage. Rubber sleeve and plastic cable sheath and insulation layer shall be free of aging and cracks. The cable ends are well sealed.
What should we think of the appearance inspection of the bridge? The above is the relevant answer to the question. If you want to know anything about it, please come to our website http://www.yeeones.com Consult and understand!