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ERW Carbon Steel Pipe
ERW Carbon Steel Pipe
ERW carbon steel pipe (Electric Resistance Welded) is produced from steel strip through high-frequency welding, resulting in a smooth internal surface, consistent wall thickness, and strong weld integrity. This type of welded carbon steel pipe is widely used in water, oil, and gas transportation, as well as in construction frameworks, scaffolding, and infrastructure systems. Our company offers ERW steel pipe in sizes from 1/2” to 24”, manufactured to standards such as ASTM A53, API 5L, and BS 1387. We also provide custom coatings like 3LPE, FBE, galvanized, and varnish coatings, along with cut-to-length and packaging services.
Product Specifications
| Item | Typical Specification |
|---|---|
| Outer Diameter (OD) | 1/2″ – 24″ (21.3 mm – 610 mm) |
| Wall Thickness (WT) | 1.2 mm – 12 mm |
| Length | 5.8 m / 6 m / 11.8 m / 12 m / Custom |
| Welding Method | ERW – Electric Resistance Welded (High-frequency longitudinal seam) |
| Steel Grades | Q195, Q215, Q235, Q345; ASTM A53 Gr.A/B, EN S235/S275/S355, A36 |
| Surface Options | Black (bare), Oiled, Pre-galvanized, Hot-dip galvanized |
| End Type | Plain End (PE), Beveled End (BE), Threaded with Coupling (optional) |
| Section Shape | Round (standard), Square & Rectangular (on request) |
| Zinc Coating (if galvanized) | 40 – 275 g/m² (typical), or up to 600 g/m² (on request) |
| Hydrostatic Testing | Optional / based on project requirement |
| Standards (reference only) | ASTM A53, BS 1387, EN 10219, IS 1239, JIS G3444 |
| Packing | Hexagonal bundles with steel straps, plastic caps on ends, waterproof wrapping |
| Common Applications | Water/gas pipelines, structural support, fencing, greenhouses, scaffolding, fire pipes |
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More Details
ADVANTAGES/DISADVANTAGES
Pipe End:
The pipe ends are available in square cuts, including straight cut, saw cut, and torch cut, or beveled for welding applications.
Surface Treatment:
Surface options include lightly oiled, hot-dip galvanized, electro-galvanized, black (untreated), bare metal, Varnish coating/anti-rust oil, and protective coatings such as coal tar epoxy, fusion bond epoxy, and 3-layer PE for enhanced durability.
Test Requirements:
- Chemical Component Analysis: Verifies material composition meets standards.
- Mechanical Properties:
- Ultimate tensile strength: Measures maximum stress before failure.
- Yield strength: Determines the stress at which deformation becomes permanent.
- Elongation: Assesses ductility under tension.
- Technical Properties:
- Flattening test: Evaluates the pipe’s resistance to deformation under compression.
- Bending test: Checks flexibility and crack resistance.
- Hardness test: Measures resistance to indentation.
- Impact test: Assesses toughness at specified temperatures.
- Exterior Size Inspection: Ensures dimensional accuracy (OD, wall thickness).
- Hydrostatic Test: Confirms pressure resistance by water filling.
- NDT (Non-Destructive Testing): Detects internal/external flaws (e.g., ultrasonic, X-ray).
Advantages: high production efficiency (20-40m/min), uniform weld seam
Disadvantages: the base material needs to be strictly pre-treated
INDUSTRIES
Oil and gas/construction engineering/metal products industry
APPLICATIONS
City gas pipeline network/structural steel support for buildings/automotive drive shaft casing
