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Xi'an Dongmeng Steel Co.,Ltd, as a prominent distributor of steel tubing, offers a range of high-quality galvanized structural pipes that are immediately available for shipment to meet your project requirements. Below is a concise overview of the services and products they provide, as well as additional information on steel pipes.
Galvanized steel pipe, also known as hot-dip galvanized steel pipe and Pre-Galvanized Steel Pipes , is a type of coated pipe that has been treated with a zinc coating to prevent corrosion. This coating process involves dipping the steel pipe into a molten bath of zinc, which then adheres to the surface of the pipe and provides a protective barrier against rust and other forms of corrosion.
The application of hot-dip galvanized steel pipe is widespread. Common uses include handrails, fencing, sewage piping, scaffolding, and irrigation systems. Due to its corrosion-resistant properties, galvanized steel pipe is particularly suited for outdoor or industrial environments where exposure to the elements can accelerate the deterioration of untreated steel.
Galvanized steel pipe is available in various shapes and sizes, including Galvanized round steel pipe, Galvanized rectangular steel pipe, and Galvanized square steel pipe. This versatility allows for a wide range of applications and makes galvanized steel pipe a popular choice for a variety of construction and engineering projects.
Overall, hot-dip galvanized steel pipe is a durable, reliable, and versatile material that offers excellent corrosion resistance and is suitable for a wide range of applications.

Products Description
Galvanized square steel pipes are widely used in industries such as construction, automobile manufacturing, home appliances and furniture manufacturing. Specific application scenarios include but are not limited to:
Building structure: used to make components such as roofs, walls, doors and windows, which can resist the influence of bad weather and corrosion and extend the service life of the building.
Automobile manufacturing: used to manufacture certain parts of automobiles, such as frames, guardrails, etc., to improve the corrosion resistance and safety of automobiles.
Home appliance manufacturing: used to make the outer shell and internal bracket of home appliances such as refrigerators and washing machines to improve the durability and aesthetics of home appliances.
Furniture manufacturing: used to make the supporting structure of furniture such as tables, chairs, and bed frames to enhance the stability and load-bearing capacity of furniture.

Galvanized rectangular tube

Corrosion resistance:
The galvanized layer can effectively prevent rectangular steel pipes from being oxidized and rusted, and significantly improve the corrosion resistance of steel.
Galvanized rectangular pipes can be used for a long time in harsh environments and extend their service life.
High intensity:
Galvanized rectangular pipe has high strength and can withstand greater pressure and load.
Suitable for occasions that need to withstand heavy loads and impacts.
plasticity:
Galvanized rectangular pipe is easy to cut, bend and weld, and can be processed according to actual needs.
The processed galvanized rectangular pipe can still maintain good performance.
Aesthetics:
The galvanized layer gives the rectangular steel pipe a bright surface, improving the visual effect and aesthetics.
Suitable for occasions that have certain requirements on appearance.
Galvanized round pipe is to immerse the round steel pipe in molten zinc liquid for galvanizing treatment, or to deposit a layer of zinc on the surface of the steel pipe through electrolysis to enhance its corrosion resistance and service life. The manufacturing process includes pre-treatment (cleaning, degreasing), galvanizing (hot-dip galvanizing or electro-galvanizing) and post-processing (cold washing, hot washing, wiping, drying) and other steps.
2. Main features
Corrosion resistance: The galvanized layer can effectively prevent steel pipes from being oxidized and rusted, significantly improve the corrosion resistance of steel and extend its service life.
High strength: Galvanized round steel pipe has high strength and can withstand greater pressure and load.
Plasticity: Galvanized round steel pipes are easy to cut, bend and weld, and can be processed according to actual needs.
Aesthetics: The galvanized layer gives the round steel pipe a bright surface, improving the visual effect and aesthetics.

Hot dip galvanized steel pipe

1. Application examples in the construction field
Fire protection pipes: Hot-dip galvanized steel pipes are often used as pipes for fire protection systems due to their excellent corrosion resistance and high strength. For example, DN50 hot-dip galvanized steel pipes with a wall thickness of 2.5mm are very suitable for use as fire protection pipes, which can ensure smooth water flow and no leakage when a fire occurs.
Structural support: In building structures, hot-dip galvanized steel pipes are also often used as supporting rods. For example, in large buildings such as gymnasiums and exhibition halls, hot-dip galvanized steel pipes can maintain the stability and safety of the structure for a long time due to their good toughness and corrosion resistance.
2. Agricultural irrigation application examples
Farm irrigation system: Hot-dip galvanized steel pipes are also widely used in farm irrigation systems. Its corrosion resistance and wear resistance enable it to be used for a long time in harsh field environments. At the same time, its smooth inner wall can reduce water flow resistance and improve irrigation efficiency.
3. Communication and power application examples
Cable armoring: In power systems, hot-dip galvanized steel pipes are often used as armoring materials for cables. Its high strength and corrosion resistance can protect the cable from damage by the external environment. At the same time, its excellent conductivity can ensure the stability and safety of the cable during transmission.
Pre-galvanized steel pipe:
Excellent corrosion resistance: Because the surface is coated with a layer of zinc, it can effectively isolate the steel pipe from direct contact with the surrounding environment and prevent corrosion.
Aesthetics: The galvanized layer makes the surface of the steel pipe bright and smooth, with good visual effects.
Quality stability: The galvanizing process is stable and the galvanized layer is uniform, which ensures the quality stability of the steel pipe.
Widely used in building structures, such as the support frame of steel structure houses, inlet and outlet water pipes, and the support system of power lines.
As an important structural material for road guardrails, tunnel supporting facilities and various bridges.
In the joint exploration and storage of oil and natural gas, it is used as raw materials for oil and gas pipelines and storage tanks.
In the field of furniture manufacturing, such as chairs, tables, hangers, TV stands, etc.

galvanized scaffolding steel tubes

Galvanized scaffolding steel pipe is a galvanized steel pipe, which is mainly used for building scaffolding. Galvanizing is to immerse the steel pipe in molten zinc liquid to cover the surface of the steel pipe with a layer of zinc, thereby improving the corrosion resistance and service life of the steel pipe. This kind of steel pipe has the characteristics of high strength, light weight, corrosion resistance and easy installation.
Raw material preparation: Select high-quality steel as raw material to ensure the strength and toughness of the steel pipe.
Steel pipe forming: Process the steel into steel pipes through processes such as hot rolling or cold rolling.
Galvanizing treatment: Immerse the steel pipe in molten zinc liquid to evenly cover the surface of the steel pipe with a layer of zinc.
Cooling and inspection: The galvanized steel pipe needs to be cooled and quality inspected to ensure that it meets the relevant standards and requirements.
Strong corrosion resistance: The galvanized layer can isolate the steel pipe from direct contact with the surrounding environment, prevent the steel pipe from corrosion and rust, and thus extend the service life.
High strength and toughness: The galvanized scaffolding steel pipe maintains the original high strength and toughness of the steel pipe and can withstand large loads and impact forces.
Easy to install and maintain: The surface of galvanized steel pipe is smooth and flat, which is easy to connect and install. At the same time, its corrosion resistance also reduces maintenance costs.
Galvanized scaffolding steel pipe is widely used in the construction industry, mainly used to build various scaffoldings. These scaffoldings play the role of support, protection and transportation during the construction process. In addition, galvanized scaffolding steel pipe can also be used in other fields that require steel pipe support and protection, such as bridge construction, tunnel construction, etc.
Welded galvanized steel pipe is a steel pipe that is made by rolling a steel plate or strip into a tube through a welding process and coating its surface with a layer of zinc. The manufacturing process of this steel pipe mainly includes the pretreatment of the steel plate or strip, tube forming, welding, galvanizing, and subsequent inspection and packaging.
Pretreatment: The steel plate or strip is cleaned, rusted and straightened to ensure that its surface is clean and flat.
Tube forming: The pretreated steel plate or strip is rolled into a tube by a tube rolling machine.
Welding: The coiled tube is welded by high-frequency welding, resistance welding and other processes to form a complete steel pipe.
Galvanizing: The welded steel pipe is immersed in molten zinc liquid to cover its surface with a layer of zinc to improve the corrosion resistance of the steel pipe.
Inspection and packaging: The galvanized steel pipe is quality inspected to ensure that it meets the relevant standards and requirements, and then packaged and stored.

galvanized seamless steel pipe

Galvanized seamless steel pipe is made by hot-rolling, cold-rolling or cold-drawing high-quality carbon structural steel or alloy structural steel into seamless steel pipes, and then a layer of zinc is plated on its surface. The galvanizing process usually adopts hot-dip galvanizing, that is, the seamless steel pipe is immersed in molten zinc liquid to evenly cover its surface with a layer of zinc.
Excellent corrosion resistance: The galvanized layer can isolate the steel pipe from direct contact with the surrounding environment, prevent the steel pipe from corrosion and rust, and thus extend its service life.
High strength and toughness: The seamless steel pipe itself has high strength and toughness, and can withstand greater pressure and impact.
Good sealing performance: The wall of the galvanized seamless steel pipe is uniform, the joints are easy to seal, and it is suitable for the transportation of various fluid media.
Smooth and beautiful surface: The surface of the galvanized steel pipe is smooth and flat, with good visual effects.
Products Specifications
Square and Rectangular Hollow Section Welded Steel Pipe
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COMMODITY NAME |
Square and Rectangular Hollow Section Welded Steel Pipe |
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SIZE RANGE |
20x20MM-600x600MM ; THICKNESS: 0.70MM--20.0MM |
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MATERIAL GRADE |
Q195 = S195 / A53 Grade A |
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STANDARD |
ASTM A53 ( sch10; SCH40), ASTM A500, BS1387, EN39, BS1139, ISO65 |
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Surface |
1) Natural Black |
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DELIVERY TIME |
7-10 days after receiving advanced payment |
Pre-galvanized - Square and Rectangular Steel Pipe size chart
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Pre-galvanized - Square and Rectangular Steel Pipe size chart
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Square Hollow Section
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Rectangular Hollow Section
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Wall Thickness
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15*15
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10*20
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0.4mm~1.5mm
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20*20
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/
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0.4mm~2mm
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25*25
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20*30 15*30
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0.4mm~2.3mm
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30*30 40*40 50*50 60*60 80*80 50*100 100*100
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20*40 30*40 35*55 30*50 30*60 37*57 37*77 40*60 40*80 50*70 60*80 60*120
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0.4mm~2.5mm
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37*37
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27*47 25*50
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0.4mm~2.3mm
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If you have other specification request,please message us.
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Hot Dip Galvanized- Square and Rectangular Steel Pipe size chart
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Hot Dip Galvanized- Square and Rectangular Steel Pipe size chart
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Square Hollow Section
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Wall Thickness
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Rectangular Hollow Section
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Wall Thickness
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20*20
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1.5mm~2mm
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20*40
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1.5mm~3mm
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25*25
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1.5mm~2mm
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30*40
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1.5mm~3mm
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30*30
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1.5mm~2.75mm
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30*50
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1.5mm~3.75mm
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40*40
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1.5mm~3.75mm
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40*60
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1.5mm~3.75mm
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50*50
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1.5mm~3mm
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40*80
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1.5mm~4.75mm
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60*60
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2.5mm~3.75mm
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50*70
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1.5mm~3.75mm
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80*80
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1.7mm~4.75mm
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50*100
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1.5mm~5.75mm
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100*100
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1.7mm~4.75mm
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120*120
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2.5mm~5.75mm
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150*150
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2.5mm~7.75mm
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200*200
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2.5mm~9.75mm
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If you have other specification request,please message us.
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GALVANIZED ROUND SECTION WELDED STEEL PIPE/ TUBE ( GI TUBE/ GI PIPE)
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COMMODITY NAME |
GALVANIZED ROUND SECTION WELDED STEEL PIPE/ TUBE ( GI TUBE/ GI PIPE) |
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SIZE RANGE |
DIAMETER: 21.3MM-610MM ; THICKNESS: 1.0MM--15.0MM |
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MATERIAL GRADE |
Q195 = S195 / A53 Grade A |
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STANDARD |
ASTM A53 ( sch10; SCH40), ASTM A500, BS1387, EN39, BS1139, ISO65 |
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ZINC COATING |
40~200G/M2 ( OR CUSTOMIZED) |
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PIPE ENDS |
PLAIN ENDS / BEVEL ENDS WITH PLASTIC CAPS/ THREADED BOTH ENDS WITH COUPLING AND CAPS/ GROOVED ENDS |
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DELIVERY TIME |
7-10 days after receiving advanced payment |
REGULAR SIZE --PRE-GALVANIZED STEEL ROUND PIPE
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REGULAR SIZE --PRE-GALVANIZED STEEL ROUND PIPE
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SIZE (OUTER DIAMETER)
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WALL THICKNESS
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LENGTH
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20MM ( 1/2")
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0.8MM-2.2MM
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6M IN STOCK (OR CUSTOMIZED)
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25MM, 25.4MM (3/4")
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0.8MM-2.2MM
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6M IN STOCK (OR CUSTOMIZED)
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32MM, 38MM, 40MM, 42MM (1")
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0.8MM-2.2MM
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6M IN STOCK (OR CUSTOMIZED)
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40MM, 42MM(1 1/4")
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0.8MM-2.2MM
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6M IN STOCK (OR CUSTOMIZED)
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47MM,48MM (1 1/2")
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1MM-2.3MM
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6M IN STOCK (OR CUSTOMIZED)
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59MM, 60.3MM (2")
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1MM-2.3MM
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6M IN STOCK (OR CUSTOMIZED)
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75MM (2 1/2")
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1MM-2.3MM
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6M IN STOCK (OR CUSTOMIZED)
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87MM (3")
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1MM-2.3MM
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6M IN STOCK (OR CUSTOMIZED)
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113MM (4")
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1MM-2.3MM
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6M IN STOCK (OR CUSTOMIZED)
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HOT DIP GALVANIZED STEEL ROUND PIPE
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REGULAR SIZE --HOT DIP GALVANIZED STEEL ROUND PIPE
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SIZE (OUTER DIAMETER)
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WALL THICKNESS
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LENGTH
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21.3MM ( 1/2")
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1.4MM --2.75MM
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6M IN STOCK (OR CUSTOMIZED)
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26.8 MM (3/4")
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1.4MM -- 2.75MM
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6M IN STOCK (OR CUSTOMIZED)
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33.4MM (1")
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1.4MM -- 3.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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42.2MM(1 1/4")
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1.4 MM -- 3.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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48.3MM (1 1/2")
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1.5MM -- 4.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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60.3MM (2")
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1.6MM -- 4.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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73MM (2 1/2") - ASTM STANDARD
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1.8MM -- 5.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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76MM (2 1/2") -- BS STANDARD
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1.8MM -- 5.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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88.9MM (3")
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2.0MM -- 5.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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114.3MM (4")
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2.0MM -- 6.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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141.3MM (5")
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2.5MM -- 6.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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165MM(6") - BS STANDARD
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2.5MM -- 7.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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168.3 MM (6") - ASTM STANDARD
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2.5MM -- 7.5 MM
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6M IN STOCK (OR CUSTOMIZED)
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219.1MM (8")
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2.5MM -- 9.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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108MM -- SPECIAL SIZE
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2.5MM -- 5.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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133MM -- SPECIAL SIZE
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2.75MM -- 5.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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159MM -- SPECIAL SIZE
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3.0MM -- 7.75MM
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6M IN STOCK (OR CUSTOMIZED)
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Benefits of Galvanized Steel Pipe
Coated in zinc, galvanized steel pipes are protected from oxidation and rust, which ultimately prevents deterioration of the pipe. They are a great option when you need to protect your steel pipes from a corrosive environment. The protective quality of galvanized pipe is created through a hot-dipping process, where the zinc then provides a protective layer that will rust away before any of the steel is affected. In terms of durability, a galvanized steel pipe can last well over 100 years, depending on the amount of corrosion exposure.
Galvanized steel pipe maintains a wide range of benefits, suitable for use in highly corrosive environments. The semi-smooth, zinc finish of galvanized steel pipe provides a layer of protection that is not seen in other types of protective materials. The galvanized coating process protects the underlying steel from encountering corrosive elements that could deteriorate the steel and ultimately weaken its structural integrity. Main advantages of galvanized structural pipe include:
- Protects against corrosion and rust
- Increased structural longevity
- Overall enhanced reliability
- Affordable protection
- Easy to inspect
- Less repairs
- Rugged toughness
- Easier to maintain than standard painted pipes
- Protected by advanced ASTM standardization
Contact us for more information regarding our galvanized pipe options, or request a quote for extended pricing information today.
Common Applications for Galvanized Pipe
- Water supply system: Galvanized pipes are often used in urban water supply systems, household water supply and drainage systems, and agricultural irrigation systems due to their excellent corrosion resistance and sealing performance. It can effectively prevent water pollution and ensure the cleanliness and safety of water.
- Gas system: Galvanized pipes also play an important role in gas transmission systems. It can withstand a certain pressure while preventing gas leakage to ensure the safety and stability of gas supply.
- Heating system: Galvanized pipes are also commonly used in heating systems as connecting pipes for radiators. Its excellent thermal conductivity and corrosion resistance enable the heating system to operate efficiently and stably.
- Industrial piping system: In industrial fields such as petroleum, chemical, and coking, galvanized pipes are widely used in various piping systems. It can withstand harsh environments such as high temperature and high pressure, while preventing the corrosion of the pipeline by the medium to ensure the smooth progress of industrial production.
- Building structure: Galvanized pipes are also often used in building structures, such as scaffolding, supporting structures, etc. Its high strength and toughness enable it to withstand large loads and maintain the stability and safety of the structure.
- Other fields: In addition, galvanized pipes are also widely used in power, communications, transportation and other fields, such as cable protection pipes, bridge support structures, etc.
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Galvanized square and rectangular tube








Square and Rectangular Hollow Section Welded Steel Pipe

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube

Galvanized rectangular tube
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We are committed to providing our customers with an exceptional buying experience. Our knowledgeable and friendly sales team is always available to assist you in selecting the right galvanized steel pipe for your needs. We offer prompt shipping and secure payment options to ensure a smooth and hassle-free purchase.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734

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