Pneumatic Type Union

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Pneumatic Type Union

Q: Who include who btween them?: Some people have a national (industry) standard type of fasteners called standard fasteners, referred to as standard parts.

Q: What is the fastener and others?: Fasteners are collectively referred to as a class of mechanical parts used to fasten two or more parts (or components) into a unit. Fasteners include bolts, studs, screws, nuts, washers, Pin, etc.,

Q: High-strength screw standard parts of the quality of what data: Mechanical properties: hardness, tensile strength, etc. are in line with the standard requirements Size: size is in line with the standard requirements. Thread: through the rules are in line with the requirements.

Q: Bolts and other connection fasteners some points A B C grade what it means: Bolts and other fasteners connected due to a wide range of applications, the product level requirements are different, so the bolt product grade is divided into A, B, C three grades. One of the most accurate A, C level of the most inaccurate, B between the two. Class A is used for important applications where assembly accuracy is high and subject to greater impact, vibration or variable loads. Class A for d = 1.6-24mm and l ≤ 10d or l ≤ 150mm bolts. B grade for d> 24mm or l> 10d or l ≥ 150mm bolts, thin rod B grade M3-M20 hexagonal flange bolts, anti-loose performance better. Class C is between M5 and M64.

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: In the fastener industry, 1018 refers to what material: Low-carbon steel. Domestic in accordance with the Japanese standard to create the SWRCH18A. (JIS G 3507) Carbon C: 0.15 to 0.20 Silicon Si: 0.17 to 0.37 Mn Mn: 0.60 to 0.90 Phosphorus P: ≤0.030 Sulfur S: ≤0.035 The carbon content of the material is relatively low and can not be quenched and tempered. Used for cold piers to make low-grade screws. Pull up the strength of 450Mpa.

Q: For the commonly used standard parts, for some of the quality of good or bad, how to distinguish,: Thread: Do not have chaos, roughness standards, internal and external thread test sets of each other about. search for

Q: The main meaning is that the design to make some specific requirements to achieve consistency.: Easy to install, disassemble; to ensure long-term solid does not fail (life); do not exceed the standard selection, cost savings;

Q: What fasteners are manufacturers in China?: (11) Ningbo Ningli high-strength fasteners Ltd.(12) Ningbo Donggang Fastener Manufacturing Co., Ltd.

Q: Will the stainless steel fastening standard parts of the national standard code and name?: Fasteners with the material does not matter the standard, and now the most commonly used national standards and names corresponding to the following GB5783, full-tooth hexagonal screws GB70, hexagonal hexagon head screw GB818, pan head cross slot screw GB819, countersunk head cross slot screw GB845, pan head cross slot self-tapping nail GB846, countersunk head trough self-tapping nail GB6170, ordinary hexagonal nut GB889, nylon lock nut GB96, flat pad GB93, spring pad GB869, countersunk head rivets

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