Wholesale Galvanized Steel Pipe from Leading Manufacturer
Lingchuang's galvanized steel pipe processing factory offers a full range of galvanized round and square pipes, manufactured to national standards. The zinc coating is uniform and full, providing strong corrosion and rust resistance. We offer a complete range of specifications and models, with ample stock available. We also provide one-stop deep processing services, supporting standard cutting, bending, drilling, threading, grooving, pipe bending and welding, and custom processing of irregularly shaped components.
Galvanized steel pipes are widely used in municipal infrastructure, fire protection water supply, road guardrails, greenhouses, and building steel structures. We accept custom orders for non-standard specifications and bulk engineering orders, offering direct supply from the source factory.
Galvanized Round Pipe Specifications
(Compliant with GB/T 3091-2015 "Welded Steel Pipes for Low-Pressure Fluid Transportation")
|
Nominal diameter (DN) |
Inches represent: |
Outer Diameter (mm) |
Standard Wall Thickness (mm) |
Extra Thickness (mm) |
Theoretical weight (kg/m) |
Typical Application Scenarios |
|
DN15 |
1/2" |
21.3 |
2.75 |
3.25 |
1.28 |
Home plumbing and electrical wiring, instrument piping |
|
DN20 |
3/4" |
26.9 |
2.75 |
3.5 |
1.66 |
Indoor water supply pipes, small fire protection pipes |
|
DN25 |
1" |
33.7 |
3.25 |
4 |
2.42 |
Water heater connection pipes, heating pipes |
|
DN32 |
1.2" |
42.4 |
3.25 |
4 |
3.13 |
Commercial building water supply and drainage, air conditioning pipes |
|
DN40 |
1.5" |
48.3 |
3.5 |
4.25 |
3.84 |
Fire protection pipelines, industrial plant water supply pipes |
|
DN50 |
2" |
60.3 |
3.5 |
4.5 |
4.88 |
Outdoor water supply pipes, main fire protection pipelines |
|
DN65 |
2.5" |
76.1 |
3.75 |
4.5 |
6.64 |
Residential water supply pipes, sprinkler systems |
|
DN80 |
3" |
88.9 |
4 |
4.75 |
8.34 |
Municipal pipe networks, large-scale fire protection systems |
|
DN100 |
4" |
114.3 |
4 |
5 |
10.85 |
Industrial fluid transportation, sewage pipes |
|
DN125 |
5" |
140 |
4.5 |
5.5 |
15.04 |
Large building water supply, central air conditioning main pipes |
|
DN150 |
6" |
168.3 |
4.5 |
5.5 |
18.18 |
Municipal engineering, heating pipelines |
|
DN200 |
8" |
219.1 |
6 |
7 |
31.52 |
Urban water supply trunk lines, large sewage pipes |
Galvanized Square Pipe Specifications
(Compliant with GB/T 3094-2012 "Cold-Drawn Special-Shaped Steel Pipes")
|
Square Pipe specifications (mm): |
Wall thickness range (mm): |
Common wall thicknesses (mm): |
Theoretical weight (kg/m) |
Typical Application Scenarios |
|
20×20 |
1.0-2.5 |
1.5, 2.0 |
0.88-1.76 |
Furniture frames, lightweight railings |
|
25×25 |
1.2-3.0 |
1.5, 2.5 |
1.18-2.75 |
Fences, shelves, decorative components |
|
30×30 |
1.2-3.0 |
2.0, 2.5 |
1.71-2.75 |
Steel structure supports, door and window frames |
|
40×40 |
1.5-3.5 |
2.0, 2.75 |
2.22-3.85 |
Photovoltaic brackets, billboard frames |
|
50×50 |
1.5-4.0 |
2.5, 3.0 |
3.32-4.43 |
Greenhouses, guardrail posts |
|
60×60 |
2.0-4.5 |
2.75, 3.5 |
4.53-6.42 |
Building steel structures, stair handrails |
|
80×80 |
2.0-5.0 |
3.0, 4.0 |
7.01-9.23 |
Bridge railings, large steel structures |
|
100×100 |
2.5-6.0 |
3.5, 4.5 |
10.60-14.69 |
Factory columns, municipal engineering components |
|
120×120 |
3.0-6.0 |
4.0, 5.0 |
14.20-17.65 |
Heavy steel structures, equipment supports |
|
150×150 |
3.5-8.0 |
4.5, 6.0 |
19.83-26.24 |
Large building load-bearing structures |
|
200×200 |
4.0-10.0 |
5.0, 8.0 |
30.14-47.10 |
High-rise building steel structures, large stadiums |
Theoretical Weight Calculation Formula for Round Tubes: Weight per meter (kg/m) = (Outer Diameter − Wall Thickness) × Wall Thickness × 0.02466, where outer diameter and wall thickness are in mm, and the constant is fixed at 0.02466.
Example: Round tube with an outer diameter of 60mm and a wall thickness of 3.5mm; (60−3.5)×3.5×0.02466≈4.88 kg/m
Theoretical Weight Calculation Formula for Square Tubes: Weight per meter (kg/m) = (Side Length − Wall Thickness) × 4 × Wall Thickness × 0.00785; where side length and wall thickness are in mm, and the constant is fixed at 0.00785.
Example: Square tube 40×40mm, wall thickness 2.0mm; (40−2)×4×2×0.00785=2.3kg/m
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Galvanized Round Pipe
China's leading galvanized pipe manufacturer supplies hot-dip galvanized and cold-dip galvanized round pipes, with specifications covering DN15–DN600, complete wall thicknesses, and uniform zinc coating. We also provide deep processing services such as cutting, threading, grooving, and flange making.
Galvanized Square Pipe
Galvanized Square Pipemanufacturer boasts fully automated galvanizing production lines and square tube forming equipment, ensuring stable production capacity and ample stock. Customization of non-standard specifications is supported, and one-stop services including cutting, punching, bending, and length processing are provided. As a leading galvanized steel pipe supplier in China, we strictly control the zinc coating, wall thickness, and dimensional accuracy. We possess the capability for large-scale project supply, with nationwide logistics coverage and outstanding comprehensive production and supporting capabilities.
Cold-Dip Galvanized Steel Pipe
Cold-dip galvanized steel pipes are suitable for indoor, dry, low-pressure environments, while hot-dip galvanized pipes are better for outdoor, water, and gas pipeline applications with higher durability requirements. As a China steel pipe manufacturer and supplier, Lingchuang provides reliable galvanized pipe solutions for wholesale and engineering procurement, ensuring stable quality and cost-effective supply for different project needs.
Hot-Dip Galvanized Steel Pipe
China Leading Galvanized Steel Pipe Manufacturer specializes in producing cold-dip galvanized and hot-dip galvanized steel pipes, covering a full range of specifications from DN15 to DN600. With mature and stable production processes, the zinc coating is uniform and has strong adhesion. Boasting large-scale production capacity and ample stock, the company offers deep processing services such as cutting, threading, grooving, and flange matching. Strictly adhering to national quality standards, the company supports customization and nationwide fast delivery. With its strong overall supply capabilities, it can meet the one-stop procurement needs of various projects.
Lingchuang is a professional Galvanized Steel Pipe manufacturer and supplier in China. Welcome to import quality products from our factory here.
