Agree that the quality of the products, one way or another, depends on the material taken for its production. This rule is perfectly valid for the profiled sheet. Today, such elements are made of high-quality steel corresponding to GOST 14918-80. In addition, corrugated board is made from the rental, which also meets the existing requirements of GOST R 52246-2004.
How are corrugated board how to build: Features
