High Middle Low Pressure Union

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Q:How to check the quality of fasteners
The appearance of a color, thread through the rules, type size, such as head high, diagonal, opposite, thread length and so on. Mechanical properties include tensile strength, core hardness, decarburization, carburizing, and the like.
Q:What are all the fasteners?
Go to the professional fastener website to learn it! Really too much, too hard to classify. I hope I can help you.
Q:What is the fastener and others?
Department of mechanical engineering (a subject); mechanical parts (two subjects); fasteners (three subjects)
Q:Bolts and other connection fasteners some points A B C grade what it means
Grade is not the same, the tolerance range is not the same, A-level tolerance of the smallest, C-class tolerance of the largest
Q:Fasteners often say that the nature of galvanized oxidation is what it means
True color refers to the surface of the fastener is not any treatment, copper is copper color, iron is the color of iron, aluminum is the color of aluminum. Galvanized iron is the surface of the fastener coated with a layer of zinc, the role is rust. Oxidation refers to the surface of the fastener to the chemical reaction, to produce a layer of anti-rust film, the main role is rust, the other can also beautify the appearance.
Q:What are the technical requirements for fasteners?
1, the product used by the material (the available material is too much to see what your company to ask) 2, the accuracy of the thread (bolt type of external thread is generally 6g, nut class internal thread is generally 6h) 3, surface treatment Stainless steel materials generally do not do treatment, carbon steel, color, galvanized, Dacromet, nickel, chrome, etc.) 4, product tolerances before the surface treatment or surface treatment of the above is the standard parts of the standard, But also depends on the actual use, we must deal with the landlord.
Q:In the fastener industry, 1018 refers to what material
Low carbon steel, generally used for the production of self-tapping screws and screws and other low-strength fasteners products. 1018 steel chemical composition percentage: carbon C: 0.17-0.24; manganese Mn: 0.7-1.0; nickel Ni <= 0.25; phosphorus P: <= 0.035; sulfur S: <= 0.035; silicon Si: 0.17-0.37; <= 0.25; copper Cu: <= 0.25 domestic commonly used 18A and 22A material, carbon 0.18%. Domestic steel mills are now used daily SWRCH18A
Q:Fasteners are used in what areas?
General use of a wide range of applications, such as machinery, electronics, transportation, furniture, construction, chemicals, ships, toys, etc., life is everywhere. Aerospace fasteners are fasteners designed for aerospace vehicles.
Q:what parts do Fasteners include
nut: with a threaded hole, the shape was generally flat hexagonal cylindrical, there are flat square or flat cylindrical
Q:Who is the information on fasteners ah?
Fastener production equipment (screw molding machine, cold heading machine, head machine, threading machine, cutting machine, thread rolling machine, rolling machine, drawing machine, wire drawing machine, screw automatic screening machine, vibration plate

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