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Features: 1) Material: 20MnTiB 35VB 2) Property Classes: 8.8s ,10.9s ,12.9s 3) Tension Strength: 1040—1240 Mpa 4) Hardness : HRC 33－－39 5) Type: Twist－off－type tension –control bolt 6) Diameter: (M16 －－ M64) 7) Length: (50mm －－ 170mm) 8) Surface Treatment: diｃｈｒomate, galvanized, black, plain, hot dip galvanized 9) ISO, DIN, ANSI, JIS standards Including GB1228－1231, GB3632, ASTM A325, ASTM A490, ASTM A325M, ASTM A490M, ASTM F1852, DIN 6914－－6916 and any customers‘ special requirements are also available. 10)USE: Our high strength bolt with nut and washers are mainly used for structural connections, such as the construction of steelworks, railway, bridge, power plant, boiler station and etc.
