SGHC Galvanized Pipe
Galvanized pipe, also known as galvanized steel pipe, is a kind of pipe that has been galvanized on the surface of the steel pipe. This treatment is mainly to enhance the corrosion resistance of the steel pipe, thereby extending its service life, and is used in various environments where steel has anti-corrosion requirements.
There are two main types of galvanizing processes for galvanized pipes: hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing is to immerse the steel pipe in molten zinc liquid to attach a layer of zinc to the surface of the steel pipe. The zinc layer formed by this method is thicker and has better anti-corrosion performance, which is suitable for occasions with high requirements for anti-corrosion performance. Electro-galvanizing is to deposit a layer of zinc on the surface of the steel pipe through an electrochemical method. The zinc layer formed by this method is thinner, but the appearance is smoother, which is suitable for some occasions where the requirements for anti-corrosion performance are not particularly high.
Our galvanized square pipes are crafted from premium carbon steel (Q235B, A36), featuring a uniform zinc coating for long-lasting rust resistance. Available in hot-dip galvanized (HDG) and electro-galvanized (EG) options—HDG with thick metallurgical bonding coating for outdoor/heavy-duty use (construction frames, scaffolding), EG with smooth thin coating for indoor scenarios (furniture, railing). Covering seamless and welded types, they come in standard square sizes with precise right-angle tolerance, supported by MTC compliant with ASTM A500, BS EN 10219, and GB/T 3094.
Our galvanized pipe products cover both seamless and welded types, all manufactured through automated production lines with precision processing. Seamless pipes are formed through hot-rolling piercing and cold-drawing processes, followed by high-temperature hot-dip galvanizing (zinc temperature accurately controlled at 450-465°C) to achieve metallurgical bonding between the zinc coating and base metal. Welded pipes are formed via high-frequency welding (ERW) technology, integrated with online eddy current weld inspection and internal blowing/external scraping processes to ensure uniform zinc coating. The entire production line is equipped with laser diameter measurement systems (tolerance ±0.15mm), real-time zinc coating thickness monitoring, and dual passivation treatment. Compliant with ASTM, JIS, EN, and other international standards, we provide galvanized pipe solutions with strong corrosion resistance, high dimensional accuracy, and suitability for demanding applications worldwide.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.
Q: Are You Manufacture or Trade Company?
A: We are the professional manufacturer of pipeline products located in Tianjin，China. Welcome to contact us and visit our factory before you place orders.
Q: How do you guarantee the quality?
A: We can send free samples to you, we can accept third-party testing.
We also have test certificate, every batch goods will be testing before shipment, and the testing report will delivery to you with your goods.
Q: Can I get free samples?
A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.
Q: What is the MOQ?
A: If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.
Q: Can you OEM or ODM?
A: Yes, we have a strong developing team. The products can be made according to your request