Factory Supply Stainless Steel U-Boltm6*8 - Special for perforated power bolt power fittings – Chuan Ding

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Fasteners are a type of mechanical parts that are used for fastening connections and are extremely widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc., in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments All kinds of fasteners can be seen on, chemical, instrument and supplies, etc., which are the most widely used mechanical basic parts. It is characterized by a wide variety of specifications, different performance and uses, and a high degree of standardization, serialization, and generalization. Therefore, some people call a type of fasteners that have national standards as standard fasteners, or simply standard parts.

Standards: 1. Standards for the size of stainless steel fasteners: specify the content of the basic size of the product; products with threads.

2. Not standard on product technical conditions. Specifically, it includes the following standards:

3. Standards for surface defects of fastener products: specify the types and specific requirements of product surface defects.

4. Surface treatment standards of fastener products: specify the types and specific requirements of product surface treatments.

5. Standards for fastener product testing: specify the content of the above-mentioned various performance requirements testing.

6. Standards for product acceptance inspection, marking and packaging of stainless steel fasteners:

Standards for the marking method of fastener products: specify the complete marking method and simplified marking method of the product.

Other standards of stainless steel fasteners: such as the standard of fastener terminology, the standard of fastener product weight, etc.