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Raian IonescuMaterial quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
Hot Rolled 6 Inch ASTM A335 P11 P91 T91 Alloy Seamless Steel Pipe for Boiler Applications
Product Details
| Outer Diameter | 6-1200mm | Wall Thickness | 1-120mm |
|---|---|---|---|
| Length | 6m,5.8m,11.8m,12m, Or As Required | Section Shape | Round |
| Surface Treatment | Black Painted, PE Coated, Galvanized | Carbon Content | 0.05-0.15% (T11) |
| Manganese Content | 0.30-0.60% (T11) | Phosphorus Content | ≤0.025% (T11) |
| Sulfur Content | ≤0.025% (T11) | Silicon Content | 0.50-1.00% (T11) |
| Chromium Content | 0.50-1.00% (T11) | Molybdenum Content | 1.00-1.50% (T11) |
| Vanadium Content | 0.18-0.25% (T91) | Tensile Strength | ≥415 MPa (T11) |
| Yield Strength | ≥205 MPa (T11) | ||
| Highlight | Hot Rolled Seamless Steel Pipe,ASTM A335 P11 P91 T91 Alloy Steel Pipe,6 Inch Boiler Pipe |
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Product Description
Hot Rolled 6 Inch ASTM A335 P11 P91 T91 Alloy Seamless Steel Pipe for Boiler
High-quality alloy seamless steel pipes specifically designed for boiler applications, manufactured to meet stringent international standards including ASTM A335 specifications.
Product Specifications
Product Type
Cold Rolled / Cold Drawn alloy steel seamless pipe
Standards Compliance
JISG3467-88, JISG3458-88, GB3087, GB6479-2000, GB9948-2006, GB5310-95, GB9948-88, ASME SA210, ASME SA213, ASTM SA335, ASTMA335/A335m, ASTMA213/A213m, DIN 17175
Available Models
12Cr1MoV, P2(10CrMo910), T91, P91, P9, T9, Cr5Mo, 15CrMo, P11, P12, 13CrMo44, 25CrMo, 30CrMo, 40CrMo, 12CrMo, X12CrMo91, 12Cr2Mo
| Feature | Specifications |
|---|---|
| Surface Treatment | Black painted, PE coated, galvanized |
| Length | 6m, 5.8m, 11.8m, 12m, or as required |
| Wall Thickness | 1-120mm |
| Outer Diameter | 6-1200mm |
Trade Terms
| Payment Terms | T/T, L/C, Western Union |
|---|---|
| Price Terms | FOB, CIF, CFR, Ex-work, CNF |
Chemical Composition (%)
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo | V≥ |
|---|---|---|---|---|---|---|---|---|
| T11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 0.50-1.00 | 1.00-1.50 | |
| T12 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | ≤0.50 | 0.80-1.25 | 0.44-0.65 | |
| T13 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 | |
| T2 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | |
| T5 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 | |
| T5b | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.00-2.00 | 4.00-6.00 | 0.45-0.65 | |
| T5c | ≤0.12 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 | |
| T9 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.9-1.0 | |
| T22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 | |
| T91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | ≤0.50 | 8-9.50 | 0.85-1.05 | 0.18-0.25 |
| T92 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | ≤0.50 | 8-9.50 | 0.3-0.60 | 0.15-0.25 |
| T21 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 2.65-3.35 | 0.80-1.06 |
Mechanical Properties
| Standard | Steel Grade | Tensile (MPa) | Yield (MPa) | Elongate (%) | Hardness |
|---|---|---|---|---|---|
| 20MnG | 20MnG | ≥415 | ≥240 | ≥22 | |
| 25MnG | 25MnG | ≥485 | ≥275 | ≥20 | |
| 15CrMoG | 15CrMoG | 440~640 | ≥235 | ≥21 | |
| 12Cr2MoG | 12Cr2MoG | 450~600 | ≥280 | ≥20 | |
| 12Cr1MoVG | 12Cr1MoVG | 470~640 | ≥255 | ≥21 | |
| 12Cr2MoWVTiB | 12Cr2MoWVTiB | 540~735 | ≥345 | ≥18 | |
| 10Cr9Mo1VNb | 10Cr9Mo1VNb | ≥585 | ≥415 | ≥20 | |
| ASME SA210 | SA210A-1 | ≥415 | ≥255 | ≥30 | ≤143HB |
| ASME SA210 | SA210C | ≥485 | ≥275 | ≥30 | ≤179HB |
| ASME SA213 | SA213 T11 | ≥415 | ≥205 | ≥30 | ≤163HB |
| ASME SA213 | SA213 T12 | ≥415 | ≥220 | ≥30 | ≤163HB |
| ASME SA213 | SA213 T22 | ≥415 | ≥205 | ≥30 | ≤163HB |
| ASME SA213 | SA213 T23 | ≥510 | ≥400 | ≥20 | ≤220HB |
| ASME SA213 | SA213 T91 | ≥585 | ≥415 | ≥20 | ≤250HB |
| ASME SA213 | SA213 T92 | ≥620 | ≥440 | ≥20 | ≤250HB |
| DIN17175 | ST45.8/ | 410~530 | ≥255 | ≥21 | / |
| DIN17175 | 15Mo3 | 450~600 | ≥270 | ≥22 | |
| DIN17175 | 13CrMo44 | 440~590 | ≥290 | ≥22 | |
| DIN17175 | 10CrMo910 | 480~630 | ≥280 | ≥20 |
Heat Treatment Assurance
Our facility utilizes a fully-automatic natural gas furnace measuring 24 meters in length, capable of maintaining temperature tolerance within 10ºC for precise heat treatment control.
Important Note: It is recommended that the tempering temperature should be at least 100°F [50°C] above the intended service temperature. Please advise if service temperature exceeds 1100°F [600°C]. Pipes of Grades P1, P2, and P12 may receive final heat treatment at 1200°F[650°C] to 1300°F [705°C]. Grade P5c pipes require final heat treatment between 1325°F [715°C] to 1375°F[745°C].
Quality Assurance Process
- Each lot of raw materials undergoes spectrometer testing before storage
- 100% Positive Material Identification (PMI) on mother pipe to ensure correct material
- 100% PMI verification on finished pipe to confirm proper grade specification
Permitted Outer Diameter Tolerance
| Outer Diameter (mm) | Plus Tolerance (+) | Minus Tolerance (-) |
|---|---|---|
| 10.29-48.3 | 0.4 | 0.4 |
| <48.3--≤114.3 | 0.79 | 0.79 |
| <114.3-≤219.1 | 1.59 | 0.79 |
| <219.1-≤323.9 | 2.38 | 0.79 |
| <323.9 | ±1% | ±1% |
Applications
These high-pressure, low & medium pressure boiler steel pipes are ideal for manufacturing super-heaters, re-heaters, water walls, and economizers in large-scale power plants and industrial boiler systems.
Product Gallery
Manufacturer Profile
Our company is a comprehensive enterprise specializing in pipe fittings production, steel pipe sales, and export services. We primarily manufacture alloy steel pipes, alloy pipes, and alloy pipe fittings for industrial applications.
Factory Established
1992
Facility Area
100,000 square meters
Workforce
520 employees including 3 senior engineers, 12 engineers, and 150 technical personnel
Annual Production
20,000+ tons of pipe fittings, 50,000+ tons of pipe flux
Certifications & Quality Standards
- ISO9001 International Quality Management System Certification
- ISO14001 Environmental Management System Certification
- OHSA18001 Occupational Health and Safety Management System Certification
- Pressure Pipe Special Equipment Manufacturing License
- Measurement Assurance Ability Certificate
- China Power Network Members Accessories Factory Certification
- China Petrochemical Materials Supply Network Member Certification
Production Capabilities
Our facility features advanced production equipment including pushing machines, press machines, large heat treatment furnaces, beveling machines, sawing machines, three-way extruders, splint hammers, large sand blasting machines, and comprehensive testing instruments. We maintain over 20,000 tons of special steel pipes in inventory year-round.
Material Expertise
We work with materials including SA106B, 20g, Q345, 12Cr1MoVG, 15CrMoG, 1Cr5Mo, 1Cr9Mo, 10CrMo910, A335P5/P9/P11/P12/P22/P91/P92, WB36, and various austenitic stainless steels. Our products serve petroleum, chemical, power generation, metallurgy, city gas, heat pipeline networks, shipbuilding, and other industrial sectors.
Global Reach
Our products are distributed nationwide and exported to Southeast Asia, Central Asia, North Africa, South America, and other international markets. We are committed to quality products, excellent service, and building lasting partnerships with our customers.
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