TU 14-3R-55-2001 Seamless Steel Pipes – Manufacturer & Supplier | Specifications & Applications
We are a leading manufacturer and supplier of seamless steel pipes produced according to TU 14-3R-55-2001, a Russian technical specification widely used for high-pressure, high-temperature, and critical industrial piping systems.
Pipes manufactured under TU 14-3R-55-2001 are designed for demanding conditions in the oil & gas industry, petrochemical plants, thermal power stations, and boiler systems.
TU 14-3R-55-2001 defines the requirements for hot-rolled and cold-drawn seamless steel pipes with improved mechanical strength, precise dimensions, and enhanced reliability
TU 14-3R-55-2001 download pdf TU_14-3R-55-2001 standard
Product Range (TU 14-3R-55-2001 Pipes)
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Hot-rolled seamless pipes
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Cold-drawn seamless pipes
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Thick-wall and thin-wall tubes
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Precision pipes
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High-temperature and high-pressure service pipes
Outer Diameter (OD): 6 mm – 325 mm
Wall Thickness: 1 mm – 40 mm
Length: 4–12 meters or custom cut lengths
Material Grades
TU 14-3R-55-2001 commonly covers alloy steel and carbon steel grades such as:
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20, 20KP, 20G
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12X18H10T (AISI 321 equivalent)
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15X5M (P5), 12X1MF, 12X2M
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10X2M, 12X18H12T
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Other Cr-Mo and Cr-Ni stainless and heat-resistant steels
(Material grade varies depending on application requirements.)
| Steel Grade | Carbon % | Silicon % | Manganese % | Chromium % | Nickel % | Molybdenum % | Vanadium % | Other Elements | Copper % (max) | Sulfur % (max) | Phosphorus % (max) |
| 20 | 0.17–0.24 | 0.17–0.37 | 0.35–0.65 | ≤ 0.25 | ≤ 0.30 | – | – | – | 0.3 | 0.025 | 0.03 |
| 20-PVB | 0.18–0.24 | 0.17–0.37 | 0.35–0.65 | ≤ 0.25 | ≤ 0.30 | – | – | – | 0.15 | 0.015 | 0.015 |
| 15GS | 0.12–0.17 | 0.00–0.90 | 0.90–1.30 | ≤ 0.30 | ≤ 0.30 | – | – | – | 0.2 | 0.025 | 0.035 |
| 15XM | 0.10–0.15 | 0.17–0.37 | 0.40–0.70 | 0.80–1.10 | ≤ 0.30 | 0.25–0.55 | – | – | 0.2 | 0.025 | 0.025 |
| 12X1MF | 0.10–0.15 | 0.17–0.37 | 0.40–0.70 | 0.90–1.20 | ≤ 0.25 | 0.25–0.35 | – | – | 0.2 | 0.025 | 0.025 |
| 12X1MF-PVB | 0.11–0.15 | 0.17–0.37 | 0.40–0.70 | 0.90–1.20 | ≤ 0.25 | 0.25–0.35 | – | – | 0.15 | 0.015 | 0.015 |
| 15X1M1F | 0.10–0.15 | 0.17–0.37 | 0.40–0.70 | 1.00–1.40 | ≤ 0.25 | 0.25–0.35 | – | – | 0.2 | 0.025 | 0.025 |
| 12X2MFSR | 0.08–0.15 | 0.17–0.37 | 0.40–0.70 | 1.60–1.90 | ≤ 0.25 | 0.25–0.35 | – | Boron 0.002–0.005 | 0.2 | 0.025 | 0.025 |
| 10X9MFB-Sh | 0.08–0.14 | ≤ 0.50 | 0.30–0.60 | 8.60–10.00 | ≤ 0.70 | 0.20–0.80 | – | Niobium 0.10–0.20 | 0.3 | 0.025 | 0.03 |
| 12X11B2MF | 0.09–0.14 | ≤ 0.50 | 0.80–1.20 | 10.00–12.00 | ≤ 0.60 | 0.15–0.30 | – | Tungsten 1.7–2.2 | 0.3 | 0.025 | 0.025 |
| 08X16H9M2 | ≤ 0.08 | ≤ 0.60 | ≤ 1.00 | 15.50–17.50 | 8.50–10.50 | 1.50–2.00 | – | – | 0.2 | 0.02 | 0.035 |
| 12X18H12T | ≤ 0.12 | ≤ 0.80 | ≤ 2.00 | 17.00–19.00 | 11.00–13.00 | – | – | Titanium (0.02×C)–≤0.70 | 0.3 | 0.025 | 0.03 |
| 10X13I2B2C2H2D2 | 0.06–0.10 | 1.8–2.2 | 12.00–13.50 | 11.50–13.00 | – | 1.8–2.5 | – | Niobium 0.60–1.00 | 2.00–2.50 | 0.02 | 0.03 |
Mechanical Properties
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Reduction of Area (%) | Impact Toughness (J/cm²) | HB | Tensile Strength Transverse (MPa) | Yield Strength Transverse (MPa) | Elongation Transverse (%) | Reduction of Area Transverse (%) | Impact Toughness Transverse (J/cm²) |
| 20 / 20-PV | 412–549 | 216 | 24 | 45 | 49 | – | 412–549 | 216 | 22 | 40 | 39 |
| 15GS | ≥490 | 294 | 18 | 45 | 59 | – | ≥490 | 294 | 16 | 40 | 49 |
| 15XM | 441–637 | 235 | 21 | 50 | 59 | – | 441–637 | 225 | 20 | 45 | 49 |
| 12X1MF / 12X1MF-PV | 441–637 | 274 | 21 | 55 | 59 | – | 441–637 | 274 | 19 | 50 | 49 |
| 15X1M1F | 490–686 | 314 | 18 | 50 | 49 | – | 490–686 | 314 | 16 | 45 | 39 |
| 12X2MFCR | ≥70 | 274 | 21 | – | – | – | – | – | – | – | – |
| 10X9MF-Sh | ≥600 | 400 | 19 | 55 | 78 | 255 | ≥600 | 400 | 17 | 50 | 59 |
| 12X11V2MF | ≥588 | 392 | 18 | – | 49 | 255 | ≥588 | 392 | 17 | 45 | 49 |
| 08X16H9M2 | ≥529 | 216–294 | 35 | 55 | – | – | – | – | – | – | – |
| 12X18H12T | 539–686 | 216–392 | 35 | 55 | – | 190 | – | – | – | – | – |
| 10X13G12BS2N2D2 | ≥588 | 216 | 40 | 50 | – | – | – | – | – | – | – |
Testing & Inspection Requirements
TU 14-3R-55-2001 pipes undergo strict quality control:
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Chemical composition analysis
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Tensile and hardness testing
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Impact testing (if required)
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Hydrostatic pressure test
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Eddy current / ultrasonic NDT
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Dimensional and surface inspection
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PMI for alloy grades
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Third-party inspection (SGS, BV, TUV) available
Applications of TU 14-3R-55-2001 Pipes
These pipes are widely used across critical industries:
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Oil and gas pipelines
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Boiler and superheater tubes
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Heat exchangers
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Petrochemical and refinery piping
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Power generation systems
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Pressure vessels
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Hydraulic systems
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Chemical processing equipment
TU 14-3R-55-2001 is preferred where high reliability and long service life are required.
