A192 Seamless Carbon Steel Pipe Product Overview
ASTM A192 Seamless Pipes are cold-drawn/low-carbon steel tubes engineered for fossil fuel boilers (≤454°C/850°F), heat exchangers, and superheater headers. With 325+ MPa tensile strength and 0.06-0.18% carbon content, these ASME SA-192 certified tubes outperform ASTM A179 in thermal fatigue resistance by 15%. Compliant with EN 10216-1 P195 standards, they feature ±10% wall thickness tolerances and replace JIS G3461 STB340 in coal-fired power plants requiring <0.035% sulfur for weldability.
Key Technical Specifications
1. Dimensional & Manufacturing Properties
- Size Range:
- OD: 12.7 mm (½”) – 127 mm (5″) | Wall Thickness: 1.65–12.7 mm
- Length: 3–12 m (standard), up to 18 m (custom)
- Tolerances:
- OD: ±0.4 mm (cold-drawn), ±1% (hot-finished)
- Decarburization: ≤0.075 mm depth (ASTM A192 Section 7)
- Processing:
- Cold Drawing: Enhances surface finish (Ra ≤3.2 µm)
- Stress Relieving: 620°C for ≤163 HB hardness
2. Chemical & Mechanical Performance
Chemical Composition:
| Element | C | Mn | Si | P | S | Key Trait |
|---|---|---|---|---|---|---|
| Range | 0.06–0.18% | 0.27–0.63% | ≤0.25% | ≤0.035% | ≤0.035% | Low-carbon weldability |
Mechanical Properties:
| Property | Value | Test Standard |
|---|---|---|
| Tensile Strength | ≥325 MPa | ASTM A370 |
| Yield Strength | ≥180 MPa | ASTM E8/E8M |
| Elongation | ≥35% (50mm gauge) | ISO 6892-1 |
| Hardness (HBW) | ≤137 (thick-wall) | ASTM E10 |
| Hardness (HRB) | ≤77 (thin-wall) | ASTM E18 |
High-Temperature Performance:
| Temperature | Creep Strength (MPa) | Oxidation Rate (mm/year) |
|---|---|---|
| 400°C | 85 | 0.05 |
| 454°C | 62 | 0.12 |
Applications by Industry
| Industry | Use Case | Competitive Edge |
|---|---|---|
| Power Generation | Subcritical boiler riser tubes | 0.18% max carbon prevents graphitization |
| Chemical Plants | Steam reformer heat exchangers | 35% elongation resists thermal cycling |
| Waste-to-Energy | Municipal incinerator superheaters | ≤0.035% sulfur minimizes hot corrosion |
| Refineries | Coker unit transfer lines | 325 MPa tensile @ 300°C |
Global Standard Equivalents
| ASTM A192 | EN 10216-1 | JIS G3461 | GB 5310 |
|---|---|---|---|
| – | P195TR1 | STB340 | 20G |
Certifications & Compliance
- Processing: ASME BPVC Section II (Material) + Section IX (Welding)
- Testing: Hydrostatic (ASTM A450), Flattening (ASTM A1016)
- Certifications: PED 2014/68/EU Category I, ISO 9001:2015
Packing And Delivery
