The weight deviation of a single H-beam shall not exceed +-6%.
The weight deviation of a batch of delivery shall not exceed 4%.
But you can also negotiate the negative difference with the actual demand.
At present, the general goods on the market are 4-6%, 5-7%, 6-8%, 8- 10%, 9- 1 1%,1-13%.
Typical negative products of national standard are large-scale manufacturers Maanshan Iron and Steel Co., Ltd., Laigang Co., Ltd., Jinxi Co., Ltd., Rizhao Co., Ltd. and Baotou Steel Co. Small manufacturers have Tangshan Yuan Xinyi.
Insufficient tolerance of steel refers to the difference between the thickness of profile and the thickness required by the actual manual. Generally, the size of steel will be smaller than that required in the manual, so it is called steel under tolerance.
Extended data:
Application of H-beam;
1, various civil and industrial building structures; All kinds of long-span industrial workshops and modern high-rise buildings, especially in areas with frequent seismic activities and under high temperature conditions;
2. Large bridges with large bearing capacity, good section stability and large span are required; Heavy equipment; Expressway; Ship skeleton;
3. Mine support; Foundation treatment and dam engineering; All kinds of machine parts.
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