Railway Track Bolt Price - ASTM A320 L7M All Threaded Stud Bolts – Dingshen Metalworks

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ASTM A320/A320M L7M All Threaded Stud Bolts Standard: IFI-136, ASME B16.5, DIN976 Inch Size: 1/4”-2.1/2” with various lengths Metric Size: M6-M64 with various lengths Other Available Grade: ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2, ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on. Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc. Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advan...

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Railway Track Bolt Price - ASTM A320 L7M All Threaded Stud Bolts – Dingshen Metalworks Detail:

ASTM A320/A320M L7M All Threaded Stud Bolts

Standard: IFI-136, ASME B16.5, DIN976

Inch Size: 1/4”-2.1/2” with various lengths

Metric Size: M6-M64 with various lengths

Other Available Grade:

ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2,

ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on.

Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc.

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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We show you how to galvanize metal objects to protect them rust.

First we get 30g of zinc sulfate and dissolve it into 100mL of water.

Zinc sulfate was made back in our video on making a copper sulfate and
zinc battery: https://www.youtube.com/watch?v=Id3tL2iI0Vw

Then connect the item you want to galvanize to the negative terminal of a 5 volt power supply. Connect the positive terminal to a strip of zinc metal.

Zinc metal was obtained from our video on getting useful materials from batteries: https://www.youtube.com/watch#%21v=knc1lSupAwQ

Immerse both electrodes into the zinc sulfate solution and keep them from touching. Then turn on the current and run it for about one minute to give the metal a zinc coating.

Remove the object and now it’s galvanized.

To test the rust protection, place it on top of a paper towel soaked in saltwater. You should also place an unprotected item next to it for a good comparison. Cover the towel to prevent evaporation and wait a day or two.

The treated object should remain rust-free, perhaps developing a white crusty coating. The untreated object should start to rust.

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