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Content:? Differences tent steel material you need to know [posted 2014-11-6 16:13:19] Font Size: medium and small defective steel is broken simply because the manufacturers for the pursuit of high efficiency, reduction of steel is too large, occurred ears, folding occurs on a rolling, it will crack when folded merchandise bent. The primary material umbrella factory in Guangzhou curtain is steel, steel prices defective quality steel with a lot of difference, and it is generally difficult to tell the difference, so some unscrupulous manufacturers will be shoddy, the following is the fundamental characteristic of defective steel. Simple break defective steel is broken simply because the manufacturers for the pursuit of high efficiency, reduction of steel is too large, the occurrence of the ears, on a rolling folding occurs, it will crack when folded merchandise bent. The reason is easy to damage the appearance of shoddy steel equipment is very prone to glitches, scratches steel appearance. Deep scratches have a significant impact on the performance of stee