Q235 Galvanized pipe
Classification :
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Product Details
Q235 galvanized pipe is a hot-rolled or cold-formed steel pipe, made from Q235 grade steel (minimum yield strength of 235 MPa), which is subsequently hot-dip galvanized to provide a protective zinc coating against corrosion. It is widely used in construction, fencing, water/gas conveyance, and structural applications.
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Product Name |
Q235 Galvanized Steel Pipe (Hot-Dip Galvanized) |
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Length |
1-12m or as required |
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Diameter |
10.3mm to 1219mm or as required |
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Standard |
GB/T 3091, ASTM A53, EN 10240, JIS G3442 |
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Technique |
Hot-Dip Galvanized |
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Surface Treatment |
As-galvanized spangle surface. Clean, blasting, and painting are available upon request. |
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Thickness tolerance |
According to GB/T 3091-2015, the wall thickness tolerance depends on diameter, nominal thickness, and manufacturing process. For welded pipes with D ≤ 48.3mm, the common tolerance is ±10% of the nominal wall thickness (min. ±0.2mm). Please confirm based on specific order specifications. |
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Zinc Coating Mass |
≥ 275 g/m² (Typical average, meeting GB/T 3091 for general purpose). Other coating classes (e.g., ≥ 350 g/m²) are available upon request. |
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Export packing |
Waterproof paper and steel strip packed. Standard seaworthy export packing suitable for all modes of transport, or as required. |
Hot-dip galvanized steel pipes are widely used in the manufacturing industries of construction, machinery, coal mining, chemical industry, electric power, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery, shed construction, etc.
Galvanized steel pipe has a welded steel pipe with a hot dip or electro galvanized layer on the surface. Galvanization can increase the corrosion resistance of steel pipes and prolong the service life. Galvanized steel pipe has a wide range of uses, in addition to being used as a pipeline for general low pressure fluids such as water, gas and oil, it is also used as an oil well pipe and oil pipeline in the petroleum industry, especially in the marine oil fields, as an oil heater, condensation cooler and coal distillation and oil washing exchanger pipe for chemical coking equipment, and as a support frame pipe for trestle piles and mining pits, etc.

Custom-made irregular-shaped tubes
Irregular-shaped tubes are hollow steel materials with non-standard irregular cross-sections, which are different from ordinary round tubes. We support customized production based on drawings and samples. The cross-section, material, wall thickness, and length can be adjusted according to working conditions to reduce subsequent cutting and welding processes and improve the overall strength and assembly accuracy of the components.
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Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.

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Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.
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