Drywall screws are used for the connection between gypsum wallboard, etc., and metal keels. The thread is double-head thread, and
the surface of the thread has a high hardness (≥HRC53), which can be quickly screwed into the keel to form a connection without
making a prefabricated hole. The market is generally more black, namely black phosphating. Because mainly used for plasterboard, and plasterboard thickness is the same.
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Anping County Xinhai Traffic Wire Mesh Manufacture Co., Ltd , https://www.xhmetalfence.com