System HR Structural Nuts Price - ASTM A490 A490M Heavy Hex Structural Bolt – Dingshen Metalworks

ASTM A490 A490M Heavy Hex Structural Bolts The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A490 Bolts, approved by the Research Council on Structural Connections, endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.   Dimension: ASME B18.2.6, ASME/ANSI B18.2.3.7M Inch Size: 1/2"-1.1/2" with various length Metric Size: M12-M36 with various length Grade: ASTM A490 A490M Type-1 Finish: Black Oxide, Zinc Plating, Dacromet, and so on Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advantage: High Quality and Strict Quality Control, Competitive price,Timely delivery; Technical support, Supply Test Reports Please feel free to contact us for more details.

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    This is a special purpose machine for fully automatic production of Rolling shutter springs. This machine is specially designed for producing Rolling shutter springs, Garage door springs, Roller door springs. The machine is equipped with two coiling stations each left and right hand coiling. Two wires of same size can fed simultaneously at the same time in each coiling station. Spring outer diameter is to be set manually and the spring length is set by entering total wire length into HMI. The springs get cut by power cutting unit after the set value of wire length is achieved. The looping on each side has to be done in second operation.