... . Wear-resistant 3. Accord with GB6003.1-1997 standard and ISO3310-1:1990 R20/3,R20,R40/3 ... H80 BrassStainless SteelStainless SteelProduction TechnologyWeavingPunchingElectrochemical machiningProduction StandardGB6003.1-1997 standard and ISO3310-1:1990 R20/3,R20,R40/3 ... , metallurgy industries, etc. If you want to get more information, please contact us. 3. Note: Can be customized according ...