Product Standard: DIN934, DIN555, DIN439, ISO 4032, ISO 4034, ISO4035, ANSI/ASME B18.2.2, DIN439, DIN555, DIN934, DIN6915, ISO: 4035, ISO: 8675, ISO: 4034: ISO: 4032, JIS 1181, JIS1190 & the customer incoming samples, drawing carries on production.</p><p>Product Specification: Diameter: M6---M40</p><p>Product Grade: Carries out 5, 6, 8, 10 or Grade 2, ASTM A563, ASTM A194</p><p>Product Finish: Becomes Black, Yellow Zinc, White Zinc, The Hot Dipping Zinc, chrome-faced.