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Introduction of external scaffolding

Introduction of external scaffolding

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Temporary structure frame for feeding, piling and construction work outside the outer wall of the outer wall for building construction. 1.1 parts1.1.1 pipe1 scaffolding steel pipe with Phi 48mm, wall thickness of 3.5mm; horizontal horizontal bar maximum length of 2200mm, the maximum length of other rods 6500mm, and the maximum quality of each steel pipe should not be greater than 25kg.
1.1.2 fastener1 steel tubular scaffold made of malleable iron fasteners, the material should be consistent with current national standard "steel pipe scaffolding fasteners" (GB15831) regulations; the fastener made by other materials used, test show that the quality meets the standard requirements before use.2 fastener used in the scaffold, bolt tightening torque up to 6.5N.M, shall not be damaged.
2 the size and surface quality of steel pipe shall meet the following requirements:1) the new steel pipe should have quality certificate, quality inspection report; steel surface should be flat and smooth, no cracks, scarring, delamination, dislocation, bend, burr, indentation and scratch depth of steel pipe; allowable deviation table item allowable deviation inspection tool 1 welded steel pipe size (mm) diameter 48 wall 3.5 -0.5 thick 2 vernier caliper at two ends of the steel tube shear diagonal deviation 1.7 corner ruler feeler, the outer surface of the steel pipe 3 corrosion depth is less than or equal to 0.50 bar 4 vernier caliper end bend L = 1.5m = 5, 5 pole bending steel ruler 3m<l = 4m4m<l = 6.5m = 12 = 206 level bar, inclined bar bending steel pipe L = 6.5m = 302) from drilling pipe.

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