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Technical Specifications
Product Overview
Bare Steel Pipe is manufactured from high-quality carbon steel, providing excellent strength and durability for general industrial applications. This black steel pipe offers superior mechanical properties and cost-effectiveness for structural, plumbing, and industrial piping systems.
Key Features:
- High tensile strength and structural integrity
- Excellent weldability and machinability
- Cost-effective solution for general applications
- Wide range of sizes and wall thicknesses available
- Suitable for threading and various end connections
Manufacturing Process: ERW (Electric Resistance Welded) using advanced welding technology, ensuring consistent quality and reliable performance in demanding applications.
Applications: Structural applications, water supply systems, gas distribution, fire protection systems, industrial piping, construction projects, and general mechanical applications requiring reliable steel piping solutions.
🧪 Chemical Composition
| Element | Min % | Max % | Typical % | ASTM A53 Requirement |
|---|---|---|---|---|
| Carbon (C) | - | 0.30 | 0.18 | ≤ 0.30 |
| Manganese (Mn) | 0.29 | 1.06 | 0.65 | 0.29-1.06 |
| Phosphorus (P) | - | 0.05 | 0.025 | ≤ 0.05 |
| Sulfur (S) | - | 0.06 | 0.025 | ≤ 0.06 |
| Silicon (Si) | - | 0.40 | 0.20 | ≤ 0.40 |
| Copper (Cu) | - | 0.40 | 0.20 | ≤ 0.40 |
| Nickel (Ni) | - | 0.40 | 0.15 | ≤ 0.40 |
| Chromium (Cr) | - | 0.40 | 0.15 | ≤ 0.40 |
| Iron (Fe) | Balance | Balance | 98.2 | Balance |
⚙️ Mechanical Properties
| Property | ASTM Requirement | Typical Value | Test Method | Temperature |
|---|---|---|---|---|
| Tensile Strength | 415 MPa min | 450 MPa | ASTM A370 | Room Temp |
| Yield Strength | 240 MPa min | 275 MPa | ASTM A370 | Room Temp |
| Elongation | 23% min | 28% | ASTM A370 | Room Temp |
| Hardness (Brinell) | - | 130 HB | ASTM E10 | Room Temp |
| Hardness (Rockwell B) | - | 75 HRB | ASTM E18 | Room Temp |
| Modulus of Elasticity | - | 210 GPa | ASTM E111 | Room Temp |
| Impact Energy (Charpy V) | - | 80+ J | ASTM E23 | Room Temp |
🔬 Physical Properties
| Property | Value | Unit | Temperature | Test Standard |
|---|---|---|---|---|
| Density | 7.85 | g/cm3 | 20°C | ASTM B311 |
| Melting Point | 1510-1540 | °C | - | DSC Analysis |
| Thermal Conductivity | 50.2 | W/m·K | 100°C | ASTM E1461 |
| Specific Heat | 460 | J/kg·K | 0-100°C | ASTM C351 |
| Linear Expansion | 11.7 | μm/m·K | 0-100°C | ASTM E228 |
| Electrical Resistivity | 170 | n|°¤m | 20°C | ASTM B193 |
| Magnetic Permeability | High | μ/μ₀ | Room Temp | ASTM A342 |
| Curie Temperature | 770 | °C | - | Magnetic |
📏 Product Specifications
| Specification | Available Range | Standard Length | Custom Available | Tolerance |
|---|---|---|---|---|
| Outside Diameter (OD) | 15mm - 610mm | Various | Yes | ±1.0mm |
| Wall Thickness | 2.0mm - 30mm | Various | Yes | ±12.5% |
| Length | 3m - 12m | 6m | Yes | +100mm/-0mm |
| Surface Finish | Black, Oiled, Painted | Black | Yes | Mill finish |
| Weld Type | ERW, LSAW, SSAW | ERW | All types | API standard |
| End Connection | Plain, Beveled, Threaded | Plain | Yes | ASME B36.10 |
| Standards Compliance | ASTM A53, A106, API 5L | A53 | Multiple | Full compliance |
| Pressure Rating | Schedule 40 - 160 | Schedule 40 | Yes | ASME B31.1 |
| Test Certificate | Mill TC, EN 10204 3.1 | Mill TC | Yes | Standard |
| Packaging | Bundles, Loose, Containers | Bundles | Custom | Export standard |
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Our Advantages in Processing ท่อเหล็กกล้าเปลือย
Superior Material Integrity
Manufacturing bare steel pipes without coating allows for comprehensive quality inspection of the base material, ensuring optimal structural integrity and identifying any potential defects before installation or further processing.
Precise Dimensional Control
The uncoated manufacturing process enables precise control of wall thickness and diameter tolerances, resulting in consistent dimensions that are crucial for various industrial applications and fitting compatibility.
Enhanced Welding Compatibility
Bare steel production creates an ideal surface for welding and modifications, eliminating the need for coating removal and ensuring stronger, more reliable joints in construction and industrial applications.
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