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Tianjin Sanon Steel Pipe Co., Ltd. is a stockist. Our stock factory is in Cangzhou City, Hebei Province. Our main sources of goods are boiler pipes, and the representative materials are ASTM A335 P5/P11/P91/P92, ASME SA-106/SA-106M GR.B, GB/T 3087-2008 10#/20#. The representative materials of pipeline pipes are API 5L, API 5CT, the representative materials of petroleum cracking pipes GB/T 9948 are 15MoG/12CrMoVG. GB/T 6479-2013 represents the material 10#/20#, heat exchanger tubes SA179/SA210/SA192, etc., mechanical tubes GB/T 8162 represent the material 10#/20#/Q345/42CrMo, EN10210 represents the material S355JOH/S355J2H, gas cylinder tubes GB1 8248, represent the material 34CrMo4/30CrMo.
— A Comprehensive Guide to Russia’s Core Material for Ultra‑Supercritical Boilers and High‑Pressure Steam Pipelines
Sanonpipe – Your Trusted Supplier of Russian ТУ Standard Heat‑Resistant Steel Pipes
I. Standard System Positioning: Technical Level of ТУ 14-3Р-55-2001
ТУ 14-3Р-55-2001 is a Russian technical specification (ТУ – Технические условия) specifically established for seamless steel pipes used in supercritical and ultra‑supercritical steam boilers and high‑pressure pipelines. The original text is held by TC‑357 (the Russian Technical Committee for Standardization) and managed by OAC “ROSNITI”. This standard carries high technical authority in the Russian boiler tube sector.
ТУ specifications are generally more stringent and application‑focused than ГОСТ national standards. ТУ 14-3Р-55-2001 is precisely tailored for extreme conditions with supercritical/ultra‑supercritical steam parameters, making it one of the core material standards for high‑temperature and high‑pressure piping systems in Russia’s thermal and nuclear power industries.
Status Note: This standard remains widely adopted across Russia and the CIS, serving as a key procurement reference for high‑temperature, high‑pressure equipment in power plants, boiler manufacturing, petrochemicals, and more.
II. Detailed Analysis of Grade 15Х1М1Ф (15X1M1F) – A Benchmark Low‑Alloy Heat‑Resistant Steel
15Х1М1Ф (Latin: 15Kh1M1F) is a low‑alloy heat‑resistant steel under the Russian classification, specifically designed for high‑temperature and high‑pressure service. By adding chromium (Cr), molybdenum (Mo), and vanadium (V), the steel achieves significantly improved high‑temperature creep strength, oxidation resistance, and mechanical stability.
Grade designation:
15 – carbon ~0.15%
Х – chromium
1 – chromium ~1%
М – molybdenum
1 – molybdenum ~1%
Ф – vanadium
Chemical Composition (%) (per ГОСТ and ТУ):
| Element | Range | Function |
|---|---|---|
| C | 0.10 – 0.16 | Balances strength and toughness |
| Si | 0.17 – 0.37 | Improves oxidation resistance |
| Mn | 0.40 – 0.70 | Enhances strength and hardenability |
| Cr | 1.10 – 1.40 | Forms dense oxide film, provides corrosion/heat resistance |
| Mo | 0.90 – 1.10 | Boosts high‑temperature strength and creep resistance |
| V | 0.20 – 0.25 | Refines grain, improves thermal strength |
| Ni | ≤ 0.25 | Improves low‑temperature toughness |
| Cu | ≤ 0.25 | Enhances weather resistance |
| P | ≤ 0.025 | Controls cold brittleness |
| S | ≤ 0.025 | Reduces hot shortness risk |
Mechanical Properties (Normalized + Tempered condition):
| Property | Longitudinal | Transverse | Test Standard |
|---|---|---|---|
| Tensile Strength (σb) | ≥ 500 MPa | ≥ 500 MPa | ГОСТ 1497 |
| Yield Strength (σs) | ≥ 320 MPa | ≥ 320 MPa | ГОСТ 1497 |
| Elongation (δ5) | ≥ 18% | ≥ 16% | ГОСТ 1497 |
| Reduction of Area (ψ) | ≥ 50% | ≥ 45% | ГОСТ 1497 |
| Impact Toughness (KCU) | ≥ 500 kJ/m² | ≥ 400 kJ/m² | ГОСТ 9454 |
| Density | 7800 kg/m³ | — | — |
Key Features:
Thermal strength: Combined Mo+V addition significantly improves creep and rupture strength.
Microstructural stability: Normalizing + high‑temperature tempering yields a stable bainitic/tempered sorbite structure for long‑term service.
Critical temperatures: Ac1 = 770‑819°C, Ac3 = 905‑975°C.
Maximum service temperature: up to +585°C for continuous operation.
Nuclear applicability: Suitable for nuclear power plant (AC) equipment and piping.
Transverse mechanical properties are slightly lower due to rolling‑induced anisotropy; design should account for actual stress direction.
III. International Equivalent Grades
| Standard | Equivalent Grade | Remarks |
|---|---|---|
| China (GB) | 15Cr1Mo1V | Widely verified in >300 MW units for main steam lines |
| Germany (DIN/EN) | 15CrMoV5-9 / 15CrMoV5-10 (1.8521) | Corresponding heat‑resistant grade |
Chinese 15Cr1Mo1V has been proven in over 20 imported power units and is performance‑equivalent to 15Х1М1Ф, fully interchangeable in engineering.
IV. Typical Applications
| Field | Uses | Conditions |
|---|---|---|
| Thermal Power | Main steam, superheater, reheater, headers | ≤585°C, supercritical/ultra‑supercritical |
| Nuclear Power | High‑pressure equipment and piping | High temp/pressure, radiation |
| Boiler Manufacturing | High‑pressure boiler tubes | High steam parameters, long‑term duty |
| Petrochemical | High‑temp process piping, refinery units | High temperature + corrosive media |
| Pressure Vessels | High‑temp pressure vessels | High temperature and pressure |
V. Manufacturing Process and Delivery Condition
Billet preparation: EAF + secondary refining (LF+VD) for high purity.
Piercing/hot rolling: Billets heated to 1180‑1250°C, rotary pierced.
Rolling: MPM/PQF mandrel mill or pilger mill for uniform wall thickness.
Heat treatment: Normalizing + high‑temperature tempering.
NDT: Ultrasonic (UT) + eddy current (ET) to ensure defect‑free internals.
Size Range:
OD: 10 – 273 mm
WT: 1 – 25 mm
Length: 5 – 13 m (custom available)
Delivery Condition: Normalized + Tempered (N+T)
VI. Why Choose Sanonpipe?
| Advantage | Detail |
|---|---|
| Standard Expertise | Deep understanding of ТУ 14-3Р-55-2001 and Russian technical system |
| Material Assurance | Full certificates for 15Х1М1Ф and GB 15Cr1Mo1V equivalence |
| Full Range | OD 10‑273mm, WT 1‑25mm – all specifications covered |
| Fast Delivery | Over 20,000 tons in stock; emergency orders shipped in 7‑15 days |
| One‑Stop Service | From inquiry, technical clarification to documentation and logistics |
| Zero‑Risk | 240+ internal checkpoints; zero document discrepancies |
| CBAM Support | Assistance with carbon footprint data for EU Carbon Border Adjustment |
VII. Contact Sanonpipe
We are committed to providing high‑quality low‑alloy heat‑resistant seamless steel pipes conforming to ТУ 14-3Р-55-2001 for customers in Russia and the CIS. Whether you need standard sizes or custom dimensions, we offer professional technical support and flexible supply solutions.
Example product designation:
Труба стальная бесшовная горячедеформированная 159×10 ТУ 14-3Р-55-2001 / 15Х1М1Ф
(Hot‑rolled seamless steel pipe 159×10, according to ТУ 14-3Р-55-2001, grade 15Х1М1Ф)
Sanonpipe
+86 22 58658800/+86 15320100890
info@sanonpipe.com
www.sanonpipe.com
High Standards · Fast Delivery · Zero Risk · Green & Low‑Carbon
Post time: Jun-30-2026
