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Copper Surface Polishing Grade 12.9 Spot Weld Bolts

Copper Surface Polishing Grade 12.9 Spot Weld Bolts
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Material: Copper
Finish: Polishing
Grade: 12.9
Roughness: Ra1.6
Size: Customize
Packing: Small Pack+Carton+Pallet
Service: OEM/ODM
Certificate: ISO9001:2008
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Grade 12.9 Weld Bolts


Polishing Weld Bolts


Copper spot weld bolt

Basic Infomation
Place of Origin: China
Payment & Shipping Terms
Packaging Details: Woven Bag
Delivery Time: 35days
Payment Terms: T/T
Supply Ability: 100,000pcs per month
Product Description

Copper surface polishing spot Weld bolt.




There are three common copper polishing methods as follows. Different copper parts use different polishing methods:

1. Copper chemical polishing, (commonly known as: copper liquid polishing) (traditionally called: pickling, which is prepared by three acids)

Due to the rapid development of technology now, environmentally friendly copper polishing agents have gradually replaced the original strong acid process.

This process is immersed: suitable for medium and small workpieces.

2. Manual polishing (commonly known as polishing), namely: sanding, polishing wheel, cloth wheel.

This process adopts the principle of physical grinding: it is suitable for large jobs and workpieces with simple appearance and structure.

3. Vibration polishing (vibration polishing), polishing with mechanical grinding or polishing with magnetic polishing machine.


Copper polishing steps:
Step 1: Put the copper parts into the copper high temperature oxide skin loosening agent and soak for 3-10 minutes.
Step 2: Take out the water and wash it clean, soak it in an environmentally friendly copper polishing tank for 2-3 minutes.
Step 3: Take it out and wash it with water, remove the film, and the surface is clean and bright.


Product name Copper surface polishing spot Weld bolt
Material Copper
Grade 12.9
Finish Polishing
Roughness Ra1.6
Size Customize
Length Customize
Standard DIN
Service OEM /ODM
Feature Smooth surface,No burrs
Certificate ISO9001
Package Cartons+plastic Bags


Factory Diaplay


Copper Surface Polishing Grade 12.9 Spot Weld Bolts 0


Plating line


Copper Surface Polishing Grade 12.9 Spot Weld Bolts 1


Test equipments


Copper Surface Polishing Grade 12.9 Spot Weld Bolts 2


Copper Surface Polishing Grade 12.9 Spot Weld Bolts 3



Q1:If you can not find on our website the product you need how to do?

You can send the pictures/photos and drawings of the products you need by email , we will check if we have them. We develop new models every month, Or you can send us samples by DHL/TNT, then we can develop the new model especially for you.


Q2:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?

Yes, we can, we can provide high precision parts and make the parts as your drawing.


Q3: How should I order and make payment?

By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.


Q4: What’s your Delivery Time?

Standard parts: 7-15days

Non-standard parts: 15-25days

We will make the delivery as soon as possible with the guarantee quality.

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Tel : 86-18258319335
Fax : 86-573-82715881
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