perforated steel channel

D, coating adhesion; The zinc layer of the plating parts should be firmly combined with the base metal with sufficient adhesion strength, and will not fall off or bulge after the hammer test.

Copper sulfate point test is a simple way to quickly distinguish ordinary carbon steel and all types of stainless steel wire rope. The concentration of copper sulfate solution used is 5%-10%. Before the point test, the experimental area should be thoroughly removed from the oil or other impurities, and a small area should be polished by grinding machine or soft grinding cloth, and then the test liquid drops to the grinding place. Ordinary carbon steel or iron in a few seconds will form a layer of outer metal copper, and the surface of stainless steel does not produce copper precipitation or display copper color.

Bridge reinforcement reason is the bridge durability function is poor and aging, through the steel wire mesh reinforcement, can prolong the service life of the bridge, avoid the bridge cracks, collapse and other phenomena, steel wire mesh in bridge reinforcement anti-crack engineering can play an obvious effect, improve the construction speed of the project, enhance the concrete anti-crack function, induction of good economic benefits.

You cannot use metal utensils on aluminum pans. Since aluminum is a soft metal, using metal utensils on an uncoated aluminum surface can damage its surface. You can use metal utensils, except for sharp kitchen knives, on hard-anodized aluminum pans. The anodization process adds a thick layer to the aluminum, which increases its durability and scratch resistance.