Steel tube rack is mainly used for construction pipe, construction site bracket, safety protection bracket role.
Steel tube rack by steel fasteners and steel pipe, together with the use of a combination of shelves and fasteners composed of fastener type steel scaffolding, frame tube is an important part of the fastener type steel scaffolding.Under normal conditions, each bundle of leg hand tube is 91.
Common problems in the use of steel tube：
(1) the load-bearing steel shelf tube should have a clear understanding of the general if the floor thickness of more than 300mm, it should be considered in accordance with the heavy shelf tube design, scaffolding load more than 15KN / mm2, should organize expert demonstration.To distinguish those parts of the steel pipe length changes have a greater impact on the bearing, the template holder should consider the upper free length A should not be too long, generally less than 500mm is appropriate (in the new specification may be revised), when calculating the general pole the top step and the bottom step by force, should be usedWhen the bearing capacity is not satisfied with the requirements of the group should increase the pole to reduce the step distance.
(2) the current domestic steel tube shelf tube widespread steel pipe, fasteners, top care and bottom care and other material quality is not qualified, the actual construction of the theoretical calculation does not take into account these. Insufficient thickness, lap did not meet the specification requirements; large template removal thick inner pole and Wall there is no anti-fall Network; scissors support in the plane is not continuous; scaffolding is not provided oblique brace; scaffold under the small bar spacing is too large; even the wall member does not do internal and external rigid connection; guard rail spacing greater than
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