Normally, the grade was marked on the stainless steel screws. We can easily tell the materials. If there is no marks, we can tell the grades by stainless steel test potion. We know the approximate content of the corresponding metal elements in stainless steel by reacting the chemical substances in the potion with metal components such as manganese, nickel or chromium in stainless steel to form complexes with specific colors. This method can quickly and roughly distinguish the types of stainless steel.
Huazhen Stainless Steel Fastener Co., Ltd. is a leading stainless steel bolts and nuts manufacturer in China. We are committed to becoming your reliable wholesale stainless steel fasteners supplier. Since its establishment in 2003, we have the most advanced bulk stainless steel bolts production equipment in China and specialize in the production and export of various fastener products ...[ Read More >>]
