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Galvanized Steel Pipe

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Galvanized Steel Pipe

Product Name: Galvanized Steel Pipe, CHS, GI Pipe Size:DN15-300mm Material:Q195,Q235,Q345,a53, st37, st52, s235jr, ss400 Wall thickness: 0.6mm~30mm Pipe Ends：Bevelled,Plain,Grooved,Threaded Length: 1m~12mtr Standard: ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387. BS1139, EN10255, EN39, JIS3444, GB/T 3091 & GB/T13793.

Email: ruijiesteel@rui-jie.com

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86-022-27989909

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Galvanized Steel Pipe

Product Description

Hot dipped galvanized steel pipe ASTM A53 Sch40, ideal for water, gas, and scaffolding systems.
Pre-galvanized steel tube, lightweight with uniform zinc coating, perfect for greenhouse and fence.
Welded GI pipe 1/2"-12" OD, threaded both ends, easy installation for plumbing and structural support.
Corrosion-resistant galvanized steel pipe, durable and long-lasting, suitable for oil, water, and construction projects.

Product Image：

Galvanized steel pipes in hot-dipped or pre-galvanized finish, ASTM A53, BS 1387, EN 10255, 1/2"-12" OD, Sch20-80. ERW welded, 450°C hot-dip zinc coating 200-300g/m². Hydrostatic, flattening, eddy current tested. Threaded ends with plastic caps. Steel-bundled, waterproof-wrapped, wooden crates. MTC provided, third-party inspection upon request. Fast delivery, responsive service.

Gi Steel Pipe In Stock

Threaded and Coupling

ERW Welded

Pipe Cap

Galvanized Steel Pipe Specifications：

Outside Diameter			Wall Thickness
DN	Inch	mm	mm
15	1/2"	20~21.3	0.95~2.77
20	3/4"	25~26.9	1.1~2.87
25	1"	32~33.7	1.1~4.0
32	1 1/4"	40~42.4	1.1~4.0
40	11/2"	47~48.3	1.5~7.0
50	2"	58~60.3	1.8~7.0
65	2 1/2"	73~76.1	2.0~7.0
80	3"	87~88.9	2.2~8.0
90	3 1/2"	101.6~102.1	2.2~9.0
100	4"	113~114.3	2.2~9.0
125	5"	140~141.3	2.5~10.0
150	6"	165~168.3	2.5~10.0
200	8"	216~219.1	2.75~12.0
250	10"	272.8~273.2	5.0~13.75
300	12"	323.8~325	5.5~13.75

Galvanized Steel Pipe Manufacturing

The thickness and uniformity of the zinc layer on galvanized steel pipes are crucial for their anti-corrosion performance
During the production of galvanized steel round tube, the following steps require special attention.

1.Weld seam treatment
Polish, repair, and inspect the welds of steel pipes to remove defects and avoid leakage issues during subsequent use.
2.Galvanized treatment.

Immerse the steel pipe in molten zinc solution to attach a layer of zinc on the surface of the steel pipe, in order to improve its corrosion resistance.

3.Inspection and packaging
Conduct various quality inspections on finished steel pipes, including size, appearance, weld quality, zinc layer thickness, etc.

Steel Grade

Grade	Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C
British Standards	BS1387, BS1139
European Standards	EN10255, EN39
American Standard	ASTM A53, API 5L, ASTM A252, ASTM A795

Packing & Loading

To maintain the integrity of the galvanized coating during packaging and transit, careful handling is essential. The pipe surface must be shielded from sharp edges and heavy impact to avoid scratches, dents, or coating peeling. Proper protective measures not only preserve the product appearance but also ensure its long-term anti-corrosion performance.

Machine Bundling

Galvanized Strapping

End Protection

Container Loading

Product Inspection

We conduct strict quality control on all galvanized steel pipes. Each batch is tested for zinc coating weight, wall thickness, and outer diameter to ensure full compliance with ASTM A53 and BS 1387 standards. Hydrostatic testing and flattening tests are performed to guarantee structural integrity. Threads are checked with ring gauges and protected with plastic caps. Third-party inspection services such as SGS, BV, or Intertek are welcome. Inspection before loading is available upon request. We provide full mill test certificates and reliable after-sales support. Your quality assurance is our priority.