Galvanized Steel Pipe
Length: 4-12m or customizable
Thickness: 1.6 – 4.5mm
Standard: GB/T 3091-2015
Product Introduce
Galvanized steel pipe is a core material in today’s construction, industry and infrastructure fields. Its unique anti-corrosion properties and high mechanical strength make it a revolutionary alternative to traditional steel pipes. Through the hot-dip galvanizing process, a dense zinc-iron alloy layer is formed on the surface of the steel pipe, which increases the corrosion resistance by 3-5 times and has a service life of more than 50 years.
Core performance advantages
Weather resistance: The zinc layer isolates air moisture and effectively resists atmospheric corrosion, soil corrosion and chemical medium corrosion.
Maintenance-free: The self-healing properties of zinc (sacrificial anode protection) can repair tiny scratches.
Economical: The purchase cost is lower than stainless steel, and the maintenance cost is lower than ordinary carbon steel pipes.
Product Parameters
Item | Parameters |
Products name | Galvanized Steel Pipe |
Thickness | 0.25-100 mm |
Outside diameter | 20-220 mm |
Length | 4~12m, customer requirements |
Application | Construction, bridges, roads and tunnels, machinery manufacturing, aerospace, military industry, automobiles, etc. |
MOQ | 10 tons |
Delivery time | 15-21 days for conventional products, negotiated for customized products |
Payment Term | T/T,100% L/C at sight |
Packing | Standard freight packaging |
Size specification parameter table
Nominal diameter | Inches | Outer diameter (mm) | Wall thickness (mm) | Theoretical weight (kg/m) | Implementation standard |
DN15 | 1/2″ | 21.3 | 2.75~2.8 | 1.28~1.357 | GB/T 3091 |
DN20 | 3/4″ | 26.9 | 2.75~2.8 | 1.66~1.76 | |
DN25 | 1″ | 33.7 | 3.2 | 2.41~2.554 | |
DN50 | 2″ | 60.3 | 3.5~3.8 | 5.29~5.607 | |
DN100 | 4″ | 114.3 | 4.0 | 10.88~11.53 | |
DN200 | 8″ | 219.1 | 6.0 (minimum) | 31.53 (estimated) |
Application scenarios
Building structure field
High-rise building skeleton: galvanized steel pipe as SC structural column
Scaffolding system: quick-detachable galvanized steel pipe scaffolding
Roof drainage system: K-shaped/semicircular downpipe
Industrial and municipal engineering
Fire protection pipe network: NFPA-compliant, with grooved fittings for quick connection
Water supply and delivery system: replace cast iron pipes, reducing 80% scale accumulation
Solar support: C-type/Z-type galvanized support (salt spray test > 1000 hours)
Emerging application scenarios
Modular building: prefabricated galvanized steel pipe frame
Vertical farm: thin-walled precision pipe fittings (Φ25mm-50mm) nutrient solution delivery system
Electric vehicle battery rack: high-strength galvanized square tube (impact strength ≥ 500MPa)
FAQ about Galvanized Steel Pipes
Q: What is the lifespan of galvanized steel pipes in seawater environments?
A: >50 years in conventional environments, about 20-30 years within 500 meters of the coast (it is recommended to use zinc-aluminum-magnesium coating to increase to 40 years).
Q: How to identify inferior galvanized pipes?
A: Three-view rule: look at the surface (uniformity of zinc flowers), look at the incision (no black slag), and look at the certificate.
Q: Precautions for welding galvanized pipes?
A: The welding area must be polished in advance and low-hydrogen electrodes (such as E7018) must be used. Zinc-rich paint (zinc content ≥92%) must be applied after welding.
Quality Certificate Show
Customer affirmation
Why choose us?
Companies with high trade rankings in the steel industry.
Customized steel processing one-stop procurement.
Steel exports have exceeded 200 million for five consecutive years.
We have a complete set of testing equipment, such as UV aging chamber, salt spray testing machine, universal testing machine, Rockwell hardness tester, electroplating thickness tester, T-bending testing machine, etc., and have passed SGS TUV certification.
Contact us
Company: Erqi District, Zhengzhou City, Henan Province, China
Factory: Binzhou City, Shandong Province, ChinaList item
E-mail: info04@wanzhisteel.com
WhatsApp: +86 18736065220
Website: https://wanzhisteels.com
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