Product Parameters

Product Introduction


Galvanized round pipe—also known as galvanized welded steel pipe—is created by applying a protective zinc coating to the surface of ordinary welded carbon steel pipe via hot-dip or electro-galvanizing processes. Acting much like sunscreen, this zinc layer effectively resists corrosion in humid environments, thereby enhancing the pipe's corrosion resistance and service life while preserving its structural strength.


• Electro-galvanized pipes: Produced via an electroplating process that creates a thin zinc layer, these pipes offer relatively poor corrosion resistance

• Hot-dip galvanized pipes(HDG Pipe): Produced by immersing steel pipes in molten zinc to form a zinc-iron alloy layer, these pipes feature a thick, strongly adherent coating with excellent corrosion resistance. They are widely used in construction, machinery, the chemical industry, electric power, the petroleum sector, bridge and highway engineering, and more.


Product specification


Product nameGalvanized Round Pipe
Wall Thickness

1.2-12mm

Out Diameter15-325mm
Length

5.8m, 6m, 11.8m, 12m, Customized.

Standard

GB/T 3091, ASTM A53, EN 10255, JIS G3452, DIN 2440

Material

Q235A, Q235B, Q355A, Q355B, 10#, 20#, Low carbon steel

Zinc Layer15-275 g/m2,Customized.
Delivery Time

Stock or within 3-15 workdays according to quantity,after receiving 30% advance payment

Loading Port
Tianjin,Qingdao,shanghai,customization
Exporting packaging

Standard Export Seaworthy Package.Suit for all kinds of transport,or as required


Common specifications for galvanized round pipes
DNInch
Outside Diameter(mm)
151/2''21.3
20

3/4''

26.7
251''33.4
321 1/4''42.2
401 1/2''48.3
502''60.3
652 1/2''73
803''88.9
903 1/2''101.6
1004''114.3
125
5''141.3
1506''168.3
2008''219.1
25010''273
30012''323.8


Galvanized  Round Pipe/Tube


Galvanized  Round Pipe/Tube


Galvanized  Round Pipe/Tube


Galvanized  Round Pipe/Tube




✅ Key Advantages


1. Rust and Corrosion Resistance: The zinc layer forms a protective film; even if the surface is slightly scratched, the zinc corrodes preferentially (sacrificial anode protection), preventing rapid rust-through and making it suitable for humid outdoor environments.

2. Long Service Life: Hot-dip galvanized pipe typically lasts 15–30 years in outdoor environments—far longer than untreated black steel pipe.

3. Moderate Cost: Significantly cheaper than stainless steel tubing, yet offering corrosion resistance sufficient for most general engineering projects.

4. Ease of Installation: The pipe is easy to cut, weld, and thread, accommodating standard fabrication methods; the finished surface is clean and requires no additional anti-rust primer.

5. Abrasion Resistance: The galvanized layer has good hardness, making it resistant to scratches during handling and installation.

6. Aesthetic Appeal: Widely used for balconies and fencing, galvanized pipe offers a combination of attractive appearance, cost-effectiveness, and practicality.




Industry Applications


1. Architectural Steel Structures: Scaffolding pipes, factory building supports, guardrails, perimeter fencing, railings, curtain wall supports

2. Water Supply & Drainage / Agricultural Irrigation: Low-pressure water transmission pipes, greenhouse frameworks, agricultural irrigation piping networks (exercise caution regarding high-pressure or potable water applications)

3. Municipal Engineering: Road guardrails, streetlight pole bases, traffic separation barriers

4. Machinery & Hardware: Storage racks, cart frames, equipment safety frames

5. Low-Pressure Oil & Gas Transport: Low-pressure gas transmission lines (must comply with relevant standards, such as BS or GB)

6. Security: Perimeter fencing, anti-theft grille frames


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Transport Packaging

 We adhere to the management principle of "quality first, service first, continuous improvement and innovation to meet customer needs"

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Partners

The company has sufficient inventory, supports customization, and has complete varieties and specifications.

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