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Basic introduction of non-standard fasteners
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Unstandard fastener is a kind of mechanical parts that are used for fastening and connection 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, and different performance and uses.

Fasteners are a type of mechanical parts that are used for fastening connections and are extremely widely used. All kinds of fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and supplies. Fasteners are the most widely used mechanical basic parts.

With my country's accession to the WTO in 2001, it has entered the ranks of major international trading nations. my country's fastener products are exported to countries all over the world, and fastener products from all over the world are also pouring into the Chinese market. Fasteners, as one of the products with a large import and export volume in my country, are in line with international standards. It is of great practical significance to promote Chinese fastener companies to the world and to promote fastener companies to fully participate in international cooperation and competition. Strategic significance.

In terms of size and appearance inspection, the common ones are the two-dimensional, contour measuring instrument, three-coordinate measuring instrument, and image sorting machine (this is a full-selection machine); in mechanical and chemical inspection, there are mainly hardness machines (Rockwell and Vickers ), tensile tester, metallographic microscope; for material testing, there is a spectrum analyzer and salt spray tester.

Unstandard fastener refers to the fasteners that do not need to correspond to the standard, that is, the fasteners with no strict standard specifications can be freely controlled and matched. Usually, the customer puts forward specific requirements, and then the fastener manufacturer based on these data Based on information, the manufacturing cost of non-standard fasteners is generally higher than that of standard fasteners. There are many types of non-standard fasteners. It is precisely because of this characteristic of non-standard fasteners that it is difficult to standardize non-standard fasteners.

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Basic introduction of non-standard fasteners
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