Q215A/Q235B Hot-dip Galvanized Pipe STEEL PIPES
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
1. Uniformity of galvanized layer: The steel pipe sample shall not turn red (copper-plated color) after being immersed in copper sulfate solution for 5 consecutive times.
2. Surface quality: The surface of galvanized steel pipes should have a complete galvanized layer. There should be no uncoated black spots and bubbles. Small rough surfaces and local zinc tumors are allowed.
3. Galvanized layer weight: According to the requirements of the purchaser, galvanized steel pipes can be measured for zinc layer weight. The average value should not be less than 500g/square meter, and any sample should not be less than 480g/square meter.
cold galvanized pipe
Cold galvanizing is electro-galvanizing. The amount of galvanizing is very small, only 10-50g/m2. Its corrosion resistance is much worse than that of hot-dip galvanized pipes. Regular galvanized pipe manufacturers, in order to ensure quality, most do not use electro-galvanizing (cold plating). Only small businesses with small scale and old equipment use electro-galvanizing, and of course their prices are relatively cheaper. The Ministry of Construction has officially announced that cold-galvanized pipes with backward technology will be phased out, and cold-galvanized pipes will not be used as water and gas pipes in the future. The zinc layer is an electroplated layer, and the zinc layer is independently layered with the steel pipe matrix. The zinc layer is thin, and the zinc layer simply adheres to the steel pipe matrix and falls off easily. Therefore, its corrosion resistance is poor. In new residential buildings, it is prohibited to use cold-dip galvanized steel pipes as water supply pipes.
FAQ
Q: How can you assure your quality?
1.We can provide you certificate of quality accordingly.
2.We are willing to accept the third party inspection, such as SGS,BV,CE and so on.
Q: Can you accept customization?
Yes. If you have special requirements on products or packages, we can do customization for you.
Q:What are the shipping ports?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.
Q:About product prices?
A:Prices vary from period to period due to cyclical changes in the price of raw materials.
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