Hot-dip galvanizing technology for threading pipe

June 11, 2019


The threading pipe is made of metal material, pvc material, etc., which are protection devices for the wire circuit. In the environment of strong acid, strong alkali and strong corrosion, the normal use of the wire circuit can be effectively guaranteed, and it is not damaged by the corrosive environment. Let's take a look at the principle of metal pipe galvanizing technology.

Hot-dip galvanizing of JDG threading pipes, also known as hot-dip galvanizing, is a method in which steel members are immersed in molten zinc to obtain a metal coating.

Principle: Hot-dip galvanizing coverage is good, the coating is dense, and there is no organic inclusions. It is well known that the mechanism of anti-atmospheric corrosion of zinc has mechanical protection and electrochemical protection. Under atmospheric corrosion conditions, there are ZnO, Zn(OH)2 and basic zinc carbonate protective films on the surface of the zinc layer, which slows down the corrosion of zinc to some extent. The protective film of the layer (also called white rust) is destroyed and a new film layer is formed. When the zinc layer is seriously damaged and the iron matrix is ​​endangered, zinc electrochemically protects the matrix. The standard potential of zinc is -0.76V, the standard potential of iron is -0.44V. When zinc and iron form a microbattery, zinc is dissolved as an anode. Protected as a cathode. It is obvious that hot-dip galvanizing is superior to electro-galvanizing in the resistance of the base JDG threading pipe to atmospheric corrosion.

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Wen'an Tongxing Building Decoration Material Factory: http://

1.Application: For heat sink

2.Dimension: Customized dimension, OEM & ODM

3.Material: A6063, A6061, A3003 and other series alu alloy        
4.Suface treatment: Anodizing, polishing, turning ,power coating, mill finish etc
5.Equipment: CNC ,extruding machine, cold drawn machine, heating oven, straightening machine, cutting machine  

OD

OD Tolerance

ID

Tolerance

Roundness

Straightness

Circular  

 run-out

φ16-20

±0.02

±0.02

0.01↓

0.015↓

0.05↓

φ20-30

±0.02

±0.02

0.01↓

0.015↓

0.05↓

φ30-50

±0.05

±0.05

0.02↓

0.020↓

0.08↓

φ50-80

±0.15

±0.10

0.05↓

0.025↓

0.10↓


6. STANDARD PACKING:Wooden case/carton

7. Trade Terms
1. Payment: 30% T/T in advance, 70% balance pay before delivery.  L/C at sight.
2. Delivery time: 20 days after deposit receiverd. If opening mould, plus 7-10 days.
3. Trade Term can be chosen depending on your requirements.
4. FOB Port: Shanghai

Contact Us
If you want more info.about the aluminum tubes/profiles, please feel free to contact us.
1. Attn: Karina Gu  
2. Mobile: +86-18961469527
3. Tel: +86-519-88761254

Aluminum Profile For Heat Sink

Aluminum Profile For Heat Sink,Led Heat Sink Profile,Heat Sink Aluminum Profile,Fridge Heat Sink Profile

Changzhou YiFei Machinery Co., Ltd. , http://www.yifeialu.com