How to choose self-tapping screws for installing color steel roofing tiles

- Aug 06, 2019-

When installing color steel roof sheets, screws should be in accordance with the structure of fixed service life, and especially the outer material life and specifying fixed part of life is consistent.

Bearing in mind the thickness of steel Purlin cannot exceed the self-drilling screw capacities. Supply of screws with plastic top cover, stainless steel or coated with a special layer of durable protective coating.

Self-tapping screw

In addition, apart from the dark to fasten with screws, other screws with waterproof gaskets and lighting under wind pressure and special cases with a corresponding special gasket.