A Product Name: high-strength A325 bolt (A325/A325m/A490/A490m/A449);
　　Second, the material: SCM435/SCM440/A325/A490/A449.;
　　Third, the application: for wind power generation and construction industries;
　　Fourth, the intensity: 12.9, 10.9 and ASTM high strength bolts (strength bolts HSB);
　　V. Specifications: M6-48;
　　Six, A325 bolt instructions: general with the A436 and A563 nut or washer A194-2H heavy nuts use;
　　Seven, ASTM high strength bolts of the application:
　　1: A325/A325m bolt TYPE1 in the amount of carbon, carbon boron, or carbon steel for general steel, hot dip galvanized.
　　A325 bolts TYPE2 199111 from the disabled.
　　A325 bolt TYPE3 weathering steel, weathering corrosion resistance equivalent to A242A566A709 and other steel products. Suitable for use with steel and weathering. Can be hot-dip galvanized.
　　2: A490/A490m TYPE1 bolts to bolt made ??of alloy steel, the nominal diameter of 12 to 1 12 for general steel, not galvanized.
　　TYPE2 bolts A490 bolts are usually made ??of low carbon martensite Steel nominal diameter of 12 to 1 12, can not be hot-dip galvanizing.
　　A490 bolts TYPE3 weathering steel, weathering corrosion resistance equivalent to A242A588A709 and other steel products. Suitable for use with steel and weathering. Not hot-dip galvanized
　　3: A449 bolts TYPE1 in the amount of carbon, the nominal diameter of 14 ~ 3 for general steel structure, can be used for high temperature, can be hot-dip galvanized.
　　A449 bolts TYPE2 Steel made ??a low-carbon martensite, the nominal diameter of 14 to 1, not hot zinc-plated. A325 bolt