Steel GB channel and non GB there is no difference?
From the price can be found at a glance, the cost is really reduced; finally, we recommend that you do not buy non - standard channel steel.
Weight difference is obvious, material non-standard is even more difficult to say
The so-called non standard steel (including steel), strictly speaking, is actually a kind of shoddy unqualified products, its thickness can not reach the minimum size standards, the actual use can not guarantee the components to meet the design requirements of the strength.
