ASTM A53 BS1387 DIN2244 ERW Welded Steel Pipes with Black Galvanized and Oil Coated Surface
ASTM A53 BS1387 DIN2244 ERW Welded Steel Pipes with Black Galvanized and Oil Coated Surface
1．Product Overview
ASTM A53, BS1387, and DIN2244 ERW welded steel pipes are used for structural construction, industrial fabrication, mechanical engineering, fencing systems, transportation structures, agricultural frames, infrastructure projects, and steel framework applications.
The product is available in round, square, rectangle, and ellipse profiles. Different pipe shapes support different structural, decorative, and fabrication requirements. Galvanized, oil coated, and black surface finishes can be selected according to corrosion protection, storage, and secondary processing requirements.
2．Technical Solution
The pipe is manufactured through ERW welding technology. Steel strip is formed into the required pipe profile and welded continuously to provide stable weld seam quality and dimensional consistency.
Galvanized surface improves corrosion resistance for outdoor and humid environments. Oil coated surface provides temporary rust protection during storage and transportation. Black surface is suitable for welding, painting, machining, and secondary fabrication.
Round pipes are suitable for general engineering applications. Square and rectangle pipes are commonly used for structural frameworks and supports. Ellipse pipes are suitable for decorative and visible frame applications.
3．Specifications
| Parameter | Value |
|---|---|
| Product Type | ERW Welded Steel Pipe |
| Pipe Shape | Round / Square / Rectangle / Ellipse |
| Standard | ASTM A53 / BS1387 / DIN2244 / GB/T13793 / GB/T3091 / GB/T6725 / GB/T6728 |
| Surface Finish | Galvanized / Oil Coated / Black |
| Round Pipe Size | Φ13–Φ79.2mm |
| Round Pipe Thickness | 0.5–3.0mm |
| Round Pipe Size Tolerance | ±0.10mm to ±0.12mm |
| Square Pipe Size | 16×16mm–200×200mm |
| Square Pipe Thickness | 0.7–6.0mm |
| Square Pipe Size Tolerance | ±0.15mm to ±0.60mm |
| Rectangle Pipe Size | 10×20mm–150×250mm |
| Rectangle Pipe Thickness | 0.8–6.0mm |
| Rectangle Pipe Size Tolerance | ±0.20mm to ±0.60mm |
| Ellipse Pipe Size | Φ10×20mm–Φ20×100mm |
| Ellipse Pipe Thickness | 0.8–2.5mm |
| Ellipse Pipe Size Tolerance | ±0.20mm to ±0.30mm |
| Length | 5.8M / 6M or customized |
| MOQ | 50 MT per size |
| Packaging | Nude packing or standard export packing |
| Supply Ability | 10000 MT per month |
4．Application
This product is suitable for steel structures, scaffolding, support systems, machinery frames, fabrication components, vehicle structures, trailers, containers, metal furniture, frame systems, greenhouse frames, fencing, guardrails, handrails, pipe supports, and general steel engineering.
Round welded pipes are suitable for general engineering and pipe structures.
Square and rectangle welded pipes are suitable for structural frameworks, supports, racks, and load-bearing fabrication.
Ellipse welded pipes are suitable for decorative structures, furniture frames, and visible metal components.
5．Processing
The product supports cutting, welding, punching, bending, drilling, galvanizing, painting, bundling, and fabrication processing.
Customized pipe length, surface finish, and packing method can be supplied according to project requirements.
Bundle packing and container loading solutions are available for export shipment.
6．Advantages
- ERW welding technology supports stable welding quality and dimensional consistency.
- Galvanized, oil coated, and black surface finishes support indoor, outdoor, storage, and fabrication requirements.
- Round, square, rectangle, and ellipse profiles provide flexibility for structural and decorative applications.
- Galvanized surface improves corrosion resistance for outdoor service conditions.
- The available size range supports light-duty and heavier structural applications.
- The product is suitable for cutting, welding, bending, machining, painting, and secondary fabrication.
7．How to Choose
- Choose galvanized steel pipe for outdoor construction and humid environments.
- Choose black steel pipe for fabrication, welding, machining, and painting.
- Choose oil coated steel pipe when temporary rust protection is required during storage or shipment.
- Choose square or rectangle pipe for structural frameworks and support systems.
- Choose round pipe for general engineering use.
- Choose ellipse pipe for decorative structures and visible frame components.
- Confirm pipe shape, size, wall thickness, standard, surface finish, length, and packing method before production.
8．FAQ
Q1．What pipe shapes are available
Round, square, rectangle, and ellipse welded steel pipes are available.
Q2．What surface treatments can be supplied
Galvanized, black, and oil coated surface finishes are available.
Q3．What standards are supported
ASTM A53, BS1387, DIN2244, GB/T13793, GB/T3091, GB/T6725, and GB/T6728 standards are supported.
Q4．Can customized lengths be produced
Yes. Standard lengths are 5.8M and 6M, and customized lengths can be supplied.
Q5．What industries commonly use ERW welded steel pipes
They are widely used in construction, industrial fabrication, transportation, machinery manufacturing, infrastructure, agricultural engineering, furniture manufacturing, and general steel structures.
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