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  SWRCH22A is cold heading steel, which is transformed from Japanese standard JIS G 3507-1991 and mainly for the production of drywall screws, drywall tapping screws, single screw, wood screws, chipboard screws, rapid tooth furniture nails, flat head drilling screw, hex flange drilling screws and other types of screws.

  SWRCH22A of our company has good cold heading performance, thread rolling performance, drawing performance, carburization performance and good surface quality and stable performance. The products have been sold to east, south, north, northeast, southwest and other regions across the country, in particular, in many Taiwanese, Hong Kong enterprises of east, south China have got good feedback as widely used for the export products with high quality .

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