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Mito Metals Corporation
CARBON
STEEL
SEAMLESS
Pipes
炭素鋼シームレスパイプ
High-quality carbon steel seamless pipes across ASTM A106, A53, A333 & API 5L specifications — for high-temperature, high-pressure, low-temperature, and sour service piping systems.
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Max NPS"
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Specifications
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Grade Options
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Overview
ENGINEERED FOR
EVERY SERVICE
Condition
EVERY SERVICE
Condition
Manufactured from killed steel billets by hot extrusion — providing uniform grain structure and superior mechanical properties for high-temperature, low-temperature, sour service, and line pipe applications.
01
Killed Steel
Fully deoxidized killed steel with fine grain per ASTM A106 / A333.
02
Zero Weld Seam
Hot-extruded from solid billets — no weld to compromise integrity.
03
Multi-Spec Range
A106, A53, A333, API 5L PSL1/PSL2 — all standard schedules.
04
Full Traceability
EN 10204 3.1/3.2 MTR with heat traceability & NACE compliance.
Diameter Range
FROM 1/4" TO 24" NPS
¼"
DN8½"
DN15¾"
DN201"
DN252"
DN503"
DN804"
DN1005"
DN1256"
DN1508"
DN20010"
DN25012"
DN30014"
DN35016"
DN40018"
DN45020"
DN50022"
DN55024"
DN600Wall Thickness
AVAILABLE SCHEDULES
SCH 10
Light
SCH 10
Light
SCH 20
Std
SCH 20
Standard
SCH 30
Std
SCH 30
Standard
SCH 40
Std
SCH 40
Standard
STD
Standard
STD
Default
SCH 60
Heavy
SCH 60
Heavy
SCH 80
XS
SCH 80
X-Strong
XS
Extra
XS
Extra
SCH 100
Heavy
SCH 100
Heavy
SCH 120
Heavy
SCH 120
Heavy
SCH 140
Heavy
SCH 140
Heavy
SCH 160
Max
SCH 160
Max
XXS
Dbl Xtra
XXS
Dbl Extra
Material Grades
COMPREHENSIVE GRADE
Portfolio
Portfolio
Full range of carbon steel seamless pipe grades covering high-temperature, low-temperature, general service, and line pipe applications across four major specifications.
ASTM A106
ASTM A333
ASTM A53
API 5L
High-temperature seamless carbon steel pipe for refinery, power plant, and petrochemical service. Killed steel, mandrel-pierced. Continuous service up to 1000°F.
A
A106 Grade A
LOW CARBON
Tensile48 ksi min
Yield30 ksi min
Carbon0.25% max
Elongation35% min
Max Temp750°F
Low pressureGeneralBending
B
A106 Grade B
MEDIUM CARBON — MOST POPULAR
Tensile60 ksi min
Yield35 ksi min
Carbon0.30% max
Elongation30% min
Max Temp1000°F
Most commonOil & GasPowerRefinery
C
A106 Grade C
HIGH CARBON
Tensile70 ksi min
Yield40 ksi min
Carbon0.35% max
Elongation30% min
Max Temp1000°F
High pressureStructuralHeavy wall
Low-temperature seamless carbon & alloy steel pipe. Impact tested per Charpy V-notch for cryogenic and sub-zero service in LNG, cold storage, and arctic applications.
1
A333 Grade 1
CARBON STEEL — LOW TEMP
Tensile55 ksi min
Yield30 ksi min
Carbon0.30% max
Mn0.40–1.06%
Impact Test−50°F (−46°C)
LNGCold storageCryogenic
3
A333 Grade 3
3.5% NICKEL ALLOY
Tensile65 ksi min
Yield35 ksi min
Nickel3.18–3.82%
Carbon0.19% max
Impact Test−150°F (−101°C)
Deep cryogenicLNG liquefaction
6
A333 Grade 6
CARBON STEEL — MOST POPULAR
Tensile60 ksi min
Yield35 ksi min
Carbon0.30% max
Mn0.29–1.06%
Impact Test−50°F (−46°C)
Most commonLNGArcticRefrigeration
General-service seamless and welded carbon steel pipe. For mechanical, pressure, and ordinary uses including steam, water, gas, and air lines. Black & hot-dipped galvanized.
A
A53 Grade A
TYPE S — SEAMLESS
Tensile48 ksi min
Yield30 ksi min
Carbon0.25% max
Mn0.95% max
Elongation—
SteamWaterGas linesMechanical
B
A53 Grade B
TYPE S — SEAMLESS
Tensile60 ksi min
Yield35 ksi min
Carbon0.30% max
Mn1.20% max
Elongation—
Most commonPressureGeneralStructural
Line pipe for oil & gas transmission. PSL1 (standard) and PSL2 (enhanced quality with mandatory CVN impact, restricted chemistry, and full traceability). Available up to X70 for high-pressure trunk lines.
B
API 5L Grade B
PSL1 / PSL2
SMYS35.5 ksi (245 MPa)
SMTS60.2 ksi (414 MPa)
Carbon0.28% max
CE (IIW)0.43 max
GatheringDistributionLow pressure
X42
API 5L X42
PSL1 / PSL2
SMYS42.1 ksi (290 MPa)
SMTS60.2 ksi (414 MPa)
Carbon0.28% max
CE (IIW)0.43 max
Oil flowlinesWater injection
X46
API 5L X46
PSL1 / PSL2
SMYS46.4 ksi (320 MPa)
SMTS63.1 ksi (435 MPa)
Carbon0.28% max
CE (IIW)0.43 max
Trunk linesSour service
X52
API 5L X52
PSL1 / PSL2
SMYS52.2 ksi (360 MPa)
SMTS66.7 ksi (460 MPa)
Carbon0.28% max
CE (IIW)0.43 max
Gas transmissionOil pipelineOffshore
X56
API 5L X56
PSL1 / PSL2
SMYS56.6 ksi (390 MPa)
SMTS71.1 ksi (490 MPa)
Carbon0.26% max (PSL2)
CE (IIW)0.43 max
Mid-pressureSour gas
X60
API 5L X60
PSL2 — HIGH STRENGTH
SMYS60.2 ksi (415 MPa)
SMTS75.4 ksi (520 MPa)
Carbon0.24% max (PSL2)
CE (IIW)0.43 max
High pressureLong distanceOffshore
X65
API 5L X65
PSL2 — HIGH STRENGTH
SMYS65.3 ksi (450 MPa)
SMTS77.5 ksi (535 MPa)
Carbon0.22% max (PSL2)
CE (IIW)0.43 max
SubseaDeepwaterSour service
X70
API 5L X70
PSL2 — MAX STRENGTH
SMYS70.3 ksi (485 MPa)
SMTS82.7 ksi (570 MPa)
Carbon0.22% max (PSL2)
CE (IIW)0.43 max
Trunk pipelinesHigh pressure gasCross-country
Dimensional Data
PIPE SPECIFICATIONS
Wall Thickness mm — per ASME B36.10
| NPS | DN | OD | SCH 40 | SCH 80 | SCH 120 | SCH 160 | XXS |
|---|---|---|---|---|---|---|---|
| 1/2" | 15 | 21.3 | 2.77 | 3.73 | — | — | 7.47 |
| 3/4" | 20 | 26.7 | 2.87 | 3.91 | — | — | 7.82 |
| 1" | 25 | 33.4 | 3.38 | 4.55 | — | — | 9.09 |
| 2" | 50 | 60.3 | 3.91 | 5.54 | — | — | 11.07 |
| 3" | 80 | 88.9 | 5.49 | 7.62 | — | — | 15.24 |
| 4" | 100 | 114.3 | 6.02 | 8.56 | 11.13 | 13.49 | 17.12 |
| 5" | 125 | 141.3 | 6.55 | 9.53 | 12.70 | 15.88 | 19.05 |
| 6" | 150 | 168.3 | 7.11 | 10.97 | 14.27 | 18.26 | 21.95 |
| 8" | 200 | 219.1 | 8.18 | 12.70 | 18.26 | 23.01 | 22.23 |
| 10" | 250 | 273.1 | 9.27 | 15.09 | 21.44 | 28.58 | 25.40 |
| 12" | 300 | 323.9 | 10.31 | 17.48 | 25.40 | 33.32 | 25.40 |
| 14" | 350 | 355.6 | 11.13 | 19.05 | 27.79 | 35.71 | — |
| 16" | 400 | 406.4 | 12.70 | 21.44 | 30.96 | 40.49 | — |
| 18" | 450 | 457.2 | 14.27 | 23.83 | 34.93 | 45.24 | — |
| 20" | 500 | 508.0 | 15.09 | 26.19 | 38.10 | 50.01 | — |
| 22" | 550 | 558.8 | 15.88 | 28.58 | 41.28 | 53.98 | — |
| 24" | 600 | 609.6 | 17.48 | 30.96 | 46.02 | 59.54 | — |
Delivery
END FINISH & SURFACE
End Finish
Plain End — Square CutStandard
Beveled End — 30° ± 5°Weld prep
Threaded — NPT / BSPWith coupling
Grooved EndRoll / cut
Coatings
Black VarnishAnti-rust
3LPE / FBEExternal
Bare / OiledPreventive
GalvanizedHot-dip zinc
Testing
HydrostaticAll specs
UT 100%Volumetric
Charpy V-NotchA333 / API PSL2
PMIXRF / OES
Standards & Compliance
ASTM A106 / A53 / A333ASTM standards
API 5L PSL1 & PSL2Line pipe
NACE MR0175 / ISO 15156Sour service
ASME B36.10 / B31.3Dimensional / Process
DNV-OS-F101Submarine pipeline