HOME PRODUCTS COMPANY PROFILE THE OFFICES CONTACT US a world of spheres! INTERNATIONAL STANDARDS SPHERES - APPLICATIONS Number Year of validity Title ISO 3290-1 2008 Rollers for bearings - Balls - Part 1: Steel balls ISO 683-17 2001 Steels for heat treatment, alloy steels and automatic steels - Ball and roller bearing steels ASTM A295 / A295M 2009 Bearings in anti-friction steel with high carbon content ISO 6508-1 2006 Metallic materials: Rockwell hardness test - Part 1. Annex D (Corrections to be added to the values measured with the Rockwell C hardness scale for different diameters, obtained in tests on spherical surfaces) EN 1983 2013 Industrial valves - Steel ball valves ISO 16135 2006 Industrial valves - Ball valves of thermoplastic materials ISO 17292 2004 Metal ball valves for the oil, petrochemical and similar industries ISO 12044 2014 Rolling bearings - Single row angular contact ball bearings - Fitting dimensions of the outer ring minor face EN 2079 1995 Aerospace series. Precision ball bearings, with corrosion resistant steel flanges, for tools and equipment. Dimensions and loads EN 3446 1995 Aerospace series. Precision ball bearings, without corrosion resistant steel flanges, for tools and equipment. Dimensions and loads ISO 3408-1 / 5 2009 Ball screws (standard divided into 5 parts) AMS 2431 / 5B 2011 Shot peening process. Steel balls hardened by shot peening ASTM A967 / A967M 2013 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts ASTM F2094 / F2094M 2014 Standard Specification for Silicon Nitride Balls for Bearings ASTM F2215 2008 Standard specification for ferrous and non-ferrous balls and bearings for use in bearings and valves ISO 18265 2014 Metallic materials: Conversion of hardness values. ASTM A681 2008 Technical specifications for alloys in tool steels. Revision n. 7 Quotation request Name and surname* Company Phone Address E-mail* Message I have read and accepted the privacy policy * * Required fields Print the card Download the catalog - INTERNATIONAL STANDARDS +39 02 6178857 | +39 02 66017032 Precision balls Load-bearing balls Rollers and precision rollers 2013 ® RGP INTERNATIONAL S.r.l. Sede legale: via Ugolini 3, 20125 Milano - Italy Sede operativa: via Aldo Palazzi 8/b, 20092 Cinisello Balsamo (MI) - Italy P.I. 09038350154 - C.F. 06195250151 - Reg. Impr. 06195250151 N. REA: MI-1274218 - Cap. soc. 36.400 int. vers. web design