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hot-dip zinc coating - corrosion resistance - ASTM certified - Galvanized Steel Pipe

Galvanized Steel Pipe


Length: 4-12m or customizable

Thickness:  1.6 – 4.5mm

Standard:  GB/T 3091-2015


Product Introduce

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

Customer praise-the product is recognized by customers
Customer praise, quality recognition, Wanzhi Steel

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

86 18736065220 WhatsApp

    Please specify your requirement by referring to the following aspects:

    1What kind of solution will meet your demand? (Key point)

    2What kind of material and expected end product are you planning to have? (Right solution begins from material and product)

    3When is the project supposed to be running? (Key info for A-Z project programming)

    4Budget for machinery purchasing? (Key info for right model)

    5Points that you really focus on. (Customized service from our project consultant)

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