Large 4.0 or more are generally used to open the button machine mold production.R type pin (spring pin) material and sizeMaterial type: different product type, different material. Common material: low carbon steel, 45# steel, spring steel, 304 stainless steel.Product size: German standard, American standard, gb standard, can also be customized according to the actual needs, R pin generally have single ring and double ring.R type pins (spring pins) surface requirementsR-type pins (spring pins) Surface treatment: Galvanized, nickel, chrome, dip, spray, natural color, black, galvanized black zinc, 12/24/48/96 hours salt spray test, environmental zinc, passivation, etcR type pin (spring pin) useMainly used for long service life. Product scope: car, trailer, stroller, shelf, scaffolding, agricultural machinery, coal mine, etc.
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