Standards: DIN934 Grade: GR1 GR2 GR4 GR5 GR7 GR9 Size:M3-M36 Advantage: Resistance to acid and alkali Description: 1. Standards: DIN934 2. Grade: GR1 GR2 GR4 GR5 GR7 GR9 3. Specification: M3-M36 4. Surface:Plain,Black,ZP,ZY,H,D,G.etc5. Material: Stainless steel, carbon steel, alloy steel 6. Advantages:Light wight, resistance to acid and alkali ,resistance to corrosion , stronge mechanical ...