ASME B18.21.1 Lock Washer

• Warranty: 5years
• Customized: Customized
• Certification: ISO9001
• Quality: High Quality
• Transport Package: Bundles by Steel Wire Rod
• Trademark: BS
• Model NO.: ASME B18.21.1
• Origin: China
• HS Code: 73021000
• Production Capacity: 500000ton/Year

Product Description

 

Rail washer is a device used between fittings and rail nuts, and it has the function of protecting the surface of fittings from abrasion and distributing the load of the nuts and screws. Rail washer can be classified into different types such as flat washer, spring washer, etc.
Shanghai Bosheng Industries Co., Ltd is an ISO 9001/2008 certified company. All processes are in accordance with the requirements of ISO quality management system, from supplier quality control to finished products, we are in accordance with the standard procedures, we have strict quality control system for suppliers:
1. Before producing Rail Washer, we will check and test the raw materials. we require suppliers to provide production batch number, chemical composition, mechanical properties and other testing indicators.
2. Our quality control inspectors take sample sampling and batch testing after the process of manufacturing Rail Washer, and provide raw material certificate and other means to control the testing process.
3.According to the different requirements of Rail Washer, we make the corresponding physical and chemical testing and inspection. If the results do not meet our requirements, we will refuse to accept the materials only if they meet our standards.
4. For semi-finished products and their external suppliers of Rail Washer, we often organize quality control coordination meetings and provide technical advice and guidance. Ensure that qualified products are delivered to our customers prior to shipment.