Production range:Productivity:standard: DIN931 DIN933GB5782 GB5783 GB5784 GB30 GB21ISO4017 ISO4014JISB1180ANSI/ASME B18.2.1size : M5-M64 1/4-2"length :10-500mmmaterial:304 302 321 304L 201 667 668 316 316L