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Help CenterSteel Pipe & Tube & Hot-dip Galvanized Seamless Steel Pipe，GB/T 3091、ASTM A53、EN 10255
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I. Product Introduction
Hot-dip galvanized steel pipe is a kind of pipe made from welded steel pipe or seamless steel pipe as the base material, processed by hot-dip galvanizing technology. A uniform, dense and strongly adhesive zinc coating will be formed on its surface, which can effectively isolate corrosive media such as air and moisture, and has excellent anti-corrosion and anti-rust performance. It is a widely used basic pipe in industrial, municipal, construction and other fields, suitable for various complex working conditions.
II. Execution Standards
Strictly follow national and industry standards to ensure product quality meets the requirements. The specific execution standards are as follows:
National Standard: GB/T 3091 (Welded Steel Pipes for Low Pressure Fluid Transport), GB/T 13793 (Straight Seam Electric Welded Steel Pipes)
III. Common Materials
High-strength base materials are selected to meet the needs of different scenarios.
Common materials include: Q235B, Q355B, SS400, S235JR, STK400, GR.B.
All materials comply with relevant standards to ensure the strength, toughness and welding performance of the pipe meet the requirements.
Typical Chemical Composition (wt%)
Material Grade |
C |
Si |
Mn |
P |
S |
|---|---|---|---|---|---|
Q235B |
≤0.22 |
≤0.35 |
0.30-0.65 |
≤0.045 |
≤0.045 |
Q355B |
≤0.24 |
≤0.55 |
1.00-1.60 |
≤0.035 |
≤0.035 |
SS400 |
≤0.25 |
≤0.35 |
≤1.60 |
≤0.045 |
≤0.045 |
S235JR |
≤0.17 |
≤0.35 |
≤1.40 |
≤0.040 |
≤0.040 |
IV. Product Specifications
Complete specifications, customizable according to customer needs. The conventional specifications are as follows:
Outer Diameter (OD): 1/2"～24" (corresponding to 21.3mm～610mm)
Wall Thickness (WT): 0.8mm～16mm
Length: Conventional 5.8m, 6m, 11.8m, 12m; customized length available
Zinc Coating Thickness: Standard ≥300g/m², can be thickened according to customer's anti-corrosion needs
V. Product Features
Excellent Anti-corrosion Performance: The zinc coating is closely combined with the base material, which can effectively resist corrosive environments such as humidity, acid and alkali, and outdoor exposure, with a long service life and greatly reducing later maintenance costs.
Excellent Surface Quality: The zinc coating is uniform and smooth, without missing plating, burrs or peeling, with a clean and beautiful appearance, combining practicality and ornamental value.
Convenient Connection: The base material has high strength, and can be directly used in various construction methods such as welding, threading, and groove connection, adapting to the diverse on-site installation needs and high construction efficiency.
High Dimensional Accuracy: The pipe has qualified roundness and straightness, uniform wall thickness, good fit during installation, and avoids affecting construction quality due to dimensional deviation.
Wide Application Range: Suitable for various scenarios such as fluid transportation, structural support, threading protection, and fire protection, with strong compatibility.
VI. Application Fields
Municipal Engineering: Urban water supply and drainage pipe networks, municipal greening irrigation pipes
Fire Engineering: Fire sprinkler systems, fire hydrant pipes
Fluid Transportation: Gas transportation, industrial wastewater treatment, industrial fluid transportation pipes
Electric Power and Communication: Power cable and communication cable threading pipes
Construction Engineering: Steel structure support, scaffolding, guardrails, air conditioning and heating pipes
Agricultural Field: Farmland irrigation pipes
VII. Packaging and Delivery
Packaging: Fixed with steel strip binding, inner pipe plugs installed at both ends of the pipe, and covered with waterproof cloth to prevent collision, moisture and rust during transportation.
Delivery Status: Hot-dip galvanized straight pipes with clean surface, no stains or damage.
Delivery Time: Spot supply for conventional specifications, delivery within 3-7 days.
Quality Assurance: Original Mill Test Certificate (MTC) is provided with the goods, specifying key parameters such as material, specification and zinc coating thickness, ensuring product traceability and quality guarantee.
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