The discrimination method of the stainless steel material quality
1, the lateral and inferior steel reinforcement and low, often emerging phenomenon of discontent, because manufacturers to achieve big minus tolerance, finished product quantity of the previous way slants big, small iron type, groove filling.
2, and inferior steel material with impurity, more steel small density, size and out-of-tolerance serious, in the absence of a vernier caliper, so it can be weighed for verification. For about 20, rebar maximum minus tolerance of 5%, in national scale length 9 m in the theory of single weight is 120 kg, the minimum weight should be: 120 x (l - 5%) = 114 kg, 114 kg weigh out the weight of the single than small, is false and inferior steel, the reason is that it is negative tolerance beyond 5%. In general the whole equivalent effect will be better, to the cumulative error and ? important thinking