Jiaxing Dexun Co.,Ltd. 86-573-82716900 wendyl@dexun-hardware.cn
Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8

  • High Light

    DIN931 Weld Bolts

    ,

    High Strength Weld Bolts

    ,

    Grade 8.8 steel weld bolts

  • Material
    45# Steel
  • Finish
    Chrome Plated
  • Color
    Black
  • Standard
    DIN931
  • Grade
    8.8
  • Surface Treatment
    Heat Treatment
  • Service
    OEM/ODM
  • Certificate
    ISO9001:2008
  • Place of Origin
    China
  • Minimum Order Quantity
    10000pcs
  • Price
    USD
  • Packaging Details
    Bulk
  • Delivery Time
    30days
  • Payment Terms
    T/T
  • Supply Ability
    500,00,00pcs per month

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8

8.8 grade external hexagonal chrome-plated high-strength weld bolt.

 

Description

 

8.8 high strength is the tensile strength ≥800Mpa, the yield strength ratio is 0.8, and the yield strength is ≥640Mpa.

8.8 high-strength welding bolts are durable and not easily damaged.

 

Chrome plating refers to the act of plating chromium as a plating layer on other metals.
Chromium is a kind of silvery white metal with a bluish tint. Metal chromium is easily passivated in the air, and a very thin passivation film is formed on the surface, thus showing the properties of precious metals.


The chromium-plated layer has a very high hardness, and its hardness can vary in a wide range of 400-1200HV according to the composition of the plating solution and process conditions. The chrome-plated layer has good heat resistance. When heated below 500℃, there is no obvious change in gloss and hardness. The temperature will start to oxidize and change color when the temperature is above 500℃, and the hardness will decrease when the temperature is above 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.

 

 

Product name 8.8 grade external hexagonal chrome-plated high-strength weld bolts
Material 45# steel
Color Black
Finish Chrome plated
Surface Treatment Heat Treatment
Standard DIN931
Grade 8.8
MOQ Min order is 10,000pcs
Service OEM /ODM
Test SGS,PPAP, MBDC Report
Certificate ISO9001
Payment Term TT 50% Deposit

 

Cold heading equipment

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 0

 

Plating line

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 1

 

Test equipments

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 2

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 3

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 4

 

Go no go gauge

 

Chrome Plated High Strength DIN931 Weld Bolts External Hexagonal Grade 8.8 5

 

1.Q: Can you produce the goods as customized design?
A: Of course, we have enough experience to do OEM and ODM, we are welcome you send us your new design, latest style or sample. You can save time, money and own the best service from us.

2.Q: How does your company and factory do regarding quality control?
A: Quality is top priority. Highlight always attach great importance to quality controlling from the very beginning to the very
end.

3.Q: When will you make the delivery?
A: We can make the delivery within 15-20 working days according to the quantity of your order.