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Black Alloy Steel Chrom Plating Surface Weld Screws

Categories Weld Fasteners
Place of Origin: China
MOQ: 100,00,0pcs
Price: USD
Payment Terms: T/T
Supply Ability: 400,00,00pcs per month
Delivery Time: 15-35days
Packaging Details: As customer's requirement
Material: Alloy Steel
Surface Finish: Chrom Plating
Color: Black color
Surface Feature: Durable
Product Shape: Long strip
Thread Type: Full Thread
Process: Cold heading,Tapping
Service: Customized OEM/ODM
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    Black Alloy Steel Chrom Plating Surface Weld Screws

    Alloy steel Chrome plating Surface treatment Customization welding screw.


    Description


    Welding screw is also called energy storage screw, electric bolt welding stud, or planting welding nail, etc.


    The chromium-plated layer has a very high hardness, and its hardness can vary within a wide range of 400-1200HV according to the composition of the plating solution and process conditions. The chromium-plated layer has good heat resistance. When heated below 500℃, there is no obvious change in gloss and hardness. The temperature above 500℃ starts to oxidize and discolor, and the hardness starts to decrease when the temperature exceeds 700℃. The friction coefficient of the chrome layer is small, especially the dry friction coefficient, which is the lowest among all metals. Therefore, the chrome-plated layer has good wear resistance.


    The chromium plating layer has good chemical stability. It has no effect in alkali, sulfide, nitric acid and most organic acids, but it can be dissolved in hydrochloric acid (such as hydrochloric acid) and hot sulfuric acid. In the visible light range, the reflectivity of chromium is about 65%, which is between silver (88%) and nickel (55%). Because chromium does not change color, it can maintain its reflectivity for a long time and is better than silver and nickel.


    Product nameAlloy steel Chrome plating Surface treatment Customization welding screw
    MaterialAlloy Steel
    Surface TreatmentChrom plating
    ColorBlack
    FeatureDurable
    Thread TypeFull Thread
    SizeAs yr drawing
    CertificateSGS;ROHS
    ServiceCustomized OEM /ODM
    ApplicationMarchinery
    CertificationISO9001
    ProcessCold heading;Tapping

    Factory Diaplay





    Inspection Equipments




    1.How long is ur delivery time?
    A:Mostly depending on ur QTY.Generally 30-45 workdays after payment received!


    2.What is ur surface treatment?
    A:We can do galvanized,Yellow Zinc Plated,black and HDG and others.


    3.What is ur material?
    A:We can provide steel,stainless steel,carbon steel,brass and aluminum.


    4.Do u provide samples?
    A:Yes! FREE SAMPLE!!!


    5.Where is the port of shipment?
    A:Ningbo and Shanghai.

    Quality Black Alloy Steel Chrom Plating Surface Weld Screws for sale
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