The Galvanized Steel Pipe produced by Shixinda suppliers is formed by high-precision steel strips through high-frequency longitudinal welding. The seamless galvanized round pipes use national standard 20# seamless base materials for further processing. All formed pipe materials undergo dual factory inspections including eddy current testing and water pressure resistance testing, effectively avoiding common quality issues such as weld cracks, uneven pipe wall thickness, and pressure leakage.
Shixinda directly sells China Galvanized Steel Pipes. The inner walls of the pipes are smooth without burrs, and the welding welds are flat and tight. The overall torsional and compressive performance is stable. The finished heat-dip zinc products undergo a complete zinc immersion process treatment, with uniform and full zinc layers both inside and outside the pipe walls, which isolate water vapor and air corrosion media, and are suitable for various outdoor, humid, and open-air construction environments.
The pipe sizes cover Φ20mm to Φ630mm, with wall thickness ranges of 1.0mm to 18mm. Multiple base materials such as Q195, Q235B, Q355B, and 20# seamless can be selected. The standard factory length is 6 meters, and it supports arbitrary length non-standard cutting, beveling, and punching pre-processing, suitable for batch purchases by various industries such as water supply and drainage, energy, steel structures, agriculture, and municipal works.
Key Differentiation Advantages
1. Dual inspection and quality control, lower leakage risk
2. Dual product lines of seamless and welded pipes, flexible matching of budgets as needed
3. Spot delivery from the factory, shortening the supply cycle
4. Full coverage of inner and outer wall zinc plating process, no blind spots in corrosion prevention
5. Complete customized processing services, direct on-site construction upon entry
6. Rich material categories, suitable for all working conditions from light to heavy loads
Fire protection water supply pipes, low-pressure gas transmission pipelines, support columns for photovoltaic power stations, arc-shaped frameworks for agricultural greenhouses, exterior scaffolding for construction sites, isolation guardrails for municipal roads, steel structure supports for factories, hydraulic transmission pipelines for equipment, landscape decorative railings for residential areas, buried underground water supply pipelines.
Core advantage
1. Dual anti-corrosion: The zinc layer isolates moisture; when the zinc layer is damaged, the zinc corrodes first to protect the steel pipe base (electrochemical protection);
2. Internal and external galvanization: The inner wall of the hot-dip galvanized pipe is fully coated, and it is not prone to scaling or fluid resistance is low;
3. High mechanical strength: It can be bent, welded, and drilled, suitable for greenhouses, guardrails, and supports;
4. Weather-resistant and soil-resistant: It can be used for long-term in open-air, underground, and mild acidic or alkaline environments;
5. Installation is convenient: Commonly used connection methods include threads, flanges, and grooves, and the construction is mature.
Technical Specifications
Nominal DN
Common Name
Outer Diameter (mm)
Standard Wall Thickness (mm)
Theoretical Weight (kg/m)
Typical Application
DN15
4-point pipe
21.3
2.8
1.34
Household water supply, conduit pipe
DN20
6-point pipe
26.9
2.8
1.76
Air conditioning water pipe, branch pipeline
DN25
1-inch pipe
33.7
3.2
2.55
Main household water inlet pipe, greenhouse frame
DN32
1.2-inch pipe
42.4
3.5
3.32
Small fire branch pipeline
DN40
1.5-inch pipe
48.3
3.5
3.84
Commercial shop water supply
DN50
2-inch pipe
60.3
3.8
5.29
Main fire pipeline, greenhouse support column
DN80
3-inch pipe
88.9
4.0
8.34
Municipal main water supply pipeline
DN100
4-inch pipe
114.3
4.0
10.85
Factory fire protection, gas pipeline
DN150
6-inch pipe
168.3
4.5
18.18
Municipal drainage, large-flow water delivery
DN200
8-inch pipe
219.1
6.0
31.53
Large pipeline network, steel structure support
Why choose us?
Shixinda Steel Pipe Co., Ltd. is located in the Daokouzhuang Steel Pipe Industrial Base. We specialize in supplying all specifications of hot-dip galvanized round pipes, and can also provide customized production of welded pipes and seamless galvanized round pipes. We adopt a standardized hot-dip galvanizing process throughout the process, precisely controlling the temperature at 440-480℃ for molten immersion plating. The inner and outer walls of the pipes form a dense zinc-iron alloy layer, with a thick and uniform zinc layer, strong adhesion, and not prone to peeling or falling off. It is highly resistant to corrosion and durable. The wall thickness and outer diameter of the pipe materials are standard, with good straightness.
It has strong pressure-bearing capacity and can be bent, threaded, or processed with grooves. It is suitable for various scenarios such as fire protection, water supply and drainage, greenhouses, steel structures, and municipal engineering. From raw material selection to finished product inspection, we strictly control every step. We refuse inferior cold-dip galvanized pipes with thin zinc layers. We have sufficient in-stock and stable quality. We welcome all customers to inquire and cooperate.
FAQ
1. Is additional anti-corrosion required for buried galvanized steel pipes?
In normal soil conditions, they can be directly buried. For acidic or alkaline soil, it is recommended to use anti-corrosion coatings.
2. How to choose between seamless galvanized pipes and welded galvanized pipes?
For low-pressure supports, welded pipes are preferred. For high-pressure fluids and heavy-duty conditions, seamless pipes are recommended.
3. Can the pipe material be cut to any length?
Non-standard lengths can be cut, and beveling and punching processing can be done as needed.
4. What are the minimum and maximum supply pipe diameters for galvanized steel pipes?
The starting diameter for the available stock is Φ20mm, and the maximum supply diameter can reach Φ630mm.
5. Will the galvanized pipes have rust on the welds?
The pipes are tested with dual probes upon leaving the factory, and the zinc layer on the welds is complete and not prone to rust.
6. How much can be ordered for direct delivery?
Orders of 5 tons or more can be delivered as a complete vehicle. Small quantities of pipe materials can be delivered by less-than-truckload across the country.
7. Do the pipe materials meet the fire protection standards in terms of pressure-bearing performance?
All have passed water pressure tests and comply with the national standards for fire protection pipe usage.
If you have any enquiry about quotation or cooperation, please feel free to email us at yanglingling@shixindasteel.com or use the following inquiry form.Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
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