No matter what kind of goods, we will have strict production implementation requirements, so as to regulate this boundless steel market. fish plate and fish bolt are mainly used in the crane, track industry, large equipment on product quality and precision requirements are very high, then the production of fish plate and fish bolt we need to implement the standards are what?

★fish plate and fish bolt are zg270-500, the material meets the requirements of gb5676-85, the precision casting is used, the grade and size deviation meet the requirements of gb6414-86, and the surface roughness is 25%.

★ Bolts and nuts are q235bf steel workpiece, mechanical properties and chemical composition in line with gb6170-86 regulations.

★ Flat washer is q235af steel, production requirements in line with gb97.1-85 regulations.

★ The spring washer is 65mn, the material meets the requirements of gb1222-84, and the production requirements meet the requirements of gb93-87.

fish plate and fish bolt https://www.hbrailwayfastening.com/Fish-Bolt.html