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Stainless Steel Seamless Pipes

Stainless Steel Seamless Pipes are made from different methods so they can withstand in a harsh situation. It’s made up of solid billets without any welds which make it more tough and suitable for different industries. They also come in different grades such as 304, 304L, 316, 316L, 321 and 310S and many others also. It’s also known as ASTM A austenitic stainless steel or ASTM A790 duplex stainless steel pipes.They offer a range of choices based on the operating pressure, temperature, fluid composition and corrosion exposure. ASME B36.19M is a stainless steel piping dimension standard. Sachin Steel Centre is one of the trusted manufacturers and suppliers of Stainless Steel Seamless Pipes in India who supply material Solutions, Inspection documentation and provide support for shipping around the world to process industries.

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Table Of Content

Technical Data

Specifications of Stainless Steel Seamless Pipes

Parameter

Specification Detail

Standards

ASTM A312 / ASME SA312 (Austenitic), ASTM A790 / ASME SA790 (Duplex/Super Duplex), ASTM A376 / ASME SA376 (High-Temp Power Service)

Dimensions

ASME B36.19M (5S, 10S, 40S, 80S); ASME B36.10M for Sch 160 and XXS on request

Size Range

NPS 1/2 to 12 (DN 15 to DN 300) as charted below; other sizes available on request

Schedules

Sch 5S, Sch 10S, Sch 40S, Sch 80S, Sch 160, XXS

Length

Single Random (5 to 7 m), Double Random (10 to 12 m), Cut-to-length

End Finish

Plain End (PE), Bevelled End (BE per ASME B16.25), Threaded (NPT)

Surface Finish

Annealed & Pickled (AP), Bright Annealed (BA), Polished (180/240/320 Grit)

Condition

Solution Annealed and Water Quenched

Testing

Hydrostatic test or non-destructive electric test (Eddy Current / UT) on each length; flattening and flaring per A312; Positive Material Identification (PMI). Intergranular Corrosion Test (ASTM A262 Practice E) on request

Certificates

EN 10204 3.1 MTC with full raw material traceability; EN 10204 3.2 Third-Party Inspection (TPI) on request

Chemical Composition of Stainless Steel Seamless Pipes

Grade

Carbon (max)

Chromium (Cr)

Nickel (Ni)

Molybdenum (Mo)

Other Elements

TP304

0.08%

18.0 to 20.0%

8.0 to 11.0%

—

—

TP304L

0.035%

18.0 to 20.0%

8.0 to 13.0%

—

—

TP316

0.08%

16.0 to 18.0%

11.0 to 14.0%

2.00 to 3.00%

—

TP316L

0.035%

16.0 to 18.0%

10.0 to 15.0%

2.00 to 3.00%

—

TP321

0.08%

17.0 to 19.0%

9.0 to 12.0%

—

Ti 5(C+N) min, 0.70% max

TP347

0.08%

17.0 to 19.0%

9.0 to 13.0%

—

Nb 10C min, 1.00% max

TP310S

0.08%

24.0 to 26.0%

19.0 to 22.0%

—

Si 1.50% max

TP317L

0.035%

18.0 to 20.0%

11.0 to 15.0%

3.0 to 4.0%

—

S31803 (2205)

0.030%

21.0 to 23.0%

4.5 to 6.5%

2.5 to 3.5%

N 0.08 to 0.20%

S32750 (2507)

0.030%

24.0 to 26.0%

6.0 to 8.0%

3.0 to 5.0%

N 0.24 to 0.32%

Mechanical Properties of Stainless Steel Seamless Pipes

Grade

Ultimate Tensile Strength (min)

Yield Strength, 0.2% Offset (min)

Elongation (Longitudinal), min

Hardness (max)

TP304

515 MPa (75 ksi)

205 MPa (30 ksi)

35%

90 HRB / 192 HBW

TP304L

485 MPa (70 ksi)

170 MPa (25 ksi)

35%

90 HRB / 192 HBW

TP316

515 MPa (75 ksi)

205 MPa (30 ksi)

35%

90 HRB / 192 HBW

TP316L

485 MPa (70 ksi)

170 MPa (25 ksi)

35%

90 HRB / 192 HBW

TP321 / TP347

515 MPa (75 ksi)

205 MPa (30 ksi)

35%

90 HRB / 192 HBW

TP310S / TP317L

515 MPa (75 ksi)

205 MPa (30 ksi)

35%

90 HRB / 192 HBW

S31803 (2205)

620 MPa (90 ksi)

450 MPa (65 ksi)

25%

290 HBW / 31 HRC

S32750 (2507)

795 MPa (116 ksi)

550 MPa (80 ksi)

15%

310 HBW / 32 HRC

Different Grades of Stainless Steel Seamless Pipes

Grade

UNS

EN / Werkstoff Nr.

Primary Standard

Grade Link

TP304

S30400

1.4301

ASTM A312

View 304 Pipe

TP304L

S30403

1.4307

ASTM A312

View 304L Pipe

TP316

S31600

1.4401

ASTM A312

View 316 Pipe

TP316L

S31603

1.4404

ASTM A312

View 316L Pipe

TP321

S32100

1.4541

ASTM A312

View 321 Pipe

TP347

S34700

1.4550

ASTM A312

View 347 Pipe

TP310S

S31008

1.4845

ASTM A312

View 310S Pipe

TP317L

S31703

1.4438

ASTM A312

View 317L Pipe

Duplex 2205

S31803 / S32205

1.4462

ASTM A790

View Duplex Pipe

Super Duplex 2507

S32750

1.4410

ASTM A790

View Super Duplex Pipe

Equivalent Standards of Stainless Steel Seamless Pipes

Standard

Scope & Application

ASTM A312 / ASME SA312

Standard specification for seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipes.

ASTM A790 / ASME SA790

Standard specification for seamless and welded ferritic/austenitic (duplex) stainless steel pipes.

ASTM A376 / ASME SA376

Seamless austenitic steel pipe for high-temperature central-station service.

ASTM A213 / ASME SA213

Standard specification for seamless ferrite and austenite alloy-steel boiler, superheater, and heat-exchanger tubes.

ASTM A269 / ASME SA269

Standard specification for seamless and welded austenitic stainless steel tubing for general service.

EN 10216-5

European standard for seamless stainless steel tubes for pressure purposes.

ASME B36.19M

Dimensional standard covering wall thickness and outer diameter for stainless steel pipe schedules 5S, 10S, 40S, and 80S.

ASME B36.10M

Dimensional standard for carbon and alloy steel pipe.

Dimensions, Schedules & Weight Chart of SS Seamless Pipe

NPS

OD (mm)

Sch 5S Wall & Weight

Sch 10S Wall & Weight

Sch 40S Wall & Weight

Sch 80S Wall & Weight

1/2″

21.34 mm

1.65 mm · 0.82 kg/m

2.11 mm · 1.02 kg/m

2.77 mm · 1.29 kg/m

3.73 mm · 1.65 kg/m

3/4″

26.67 mm

1.65 mm · 1.04 kg/m

2.11 mm · 1.30 kg/m

2.87 mm · 1.72 kg/m

3.91 mm · 2.24 kg/m

1″

33.40 mm

1.65 mm · 1.32 kg/m

2.77 mm · 2.13 kg/m

3.38 mm · 2.55 kg/m

4.55 mm · 3.30 kg/m

1-1/4″

42.16 mm

1.65 mm · 1.68 kg/m

2.77 mm · 2.74 kg/m

3.56 mm · 3.45 kg/m

4.85 mm · 4.55 kg/m

1-1/2″

48.26 mm

1.65 mm · 1.93 kg/m

2.77 mm · 3.17 kg/m

3.68 mm · 4.12 kg/m

5.08 mm · 5.51 kg/m

2″

60.33 mm

1.65 mm · 2.43 kg/m

2.77 mm · 4.01 kg/m

3.91 mm · 5.54 kg/m

5.54 mm · 7.63 kg/m

2-1/2″

73.03 mm

2.11 mm · 3.75 kg/m

3.05 mm · 5.36 kg/m

5.16 mm · 8.80 kg/m

7.01 mm · 11.63 kg/m

3″

88.90 mm

2.11 mm · 4.60 kg/m

3.05 mm · 6.58 kg/m

5.49 mm · 11.51 kg/m

7.62 mm · 15.57 kg/m

4″

114.30 mm

2.11 mm · 5.95 kg/m

3.05 mm · 8.53 kg/m

6.02 mm · 16.38 kg/m

8.56 mm · 22.75 kg/m

5″

141.30 mm

2.77 mm · 9.64 kg/m

3.40 mm · 11.78 kg/m

6.55 mm · 22.18 kg/m

9.53 mm · 31.56 kg/m

6″

168.28 mm

2.77 mm · 11.52 kg/m

3.40 mm · 14.09 kg/m

7.11 mm · 28.80 kg/m

10.97 mm · 43.37 kg/m

8″

219.08 mm

2.77 mm · 15.06 kg/m

3.76 mm · 20.35 kg/m

8.18 mm · 43.36 kg/m

12.70 mm · 65.87 kg/m

10″

273.05 mm

3.40 mm · 23.04 kg/m

4.19 mm · 28.31 kg/m

9.27 mm · 61.46 kg/m

12.70 mm · 83.10 kg/m

12″

323.85 mm

3.96 mm · 31.84 kg/m

4.57 mm · 36.67 kg/m

9.53 mm · 75.28 kg/m

12.70 mm · 99.31 kg/m

Applications and Industrial Uses of Stainless Steel Seamless Pipes

  • Oil and Gas Pipelines
  • Chemical Processing Plants
  • Petroleum Refineries
  • Power Generation Plants
  • Pharmaceutical Manufacturing
  • Food and Beverage Processing
  • Water Treatment and Desalination Plants
  • Marine and Shipbuilding Industry
Application Industries

Frequently Asked Questions

Stainless steel seamless pipes are hollow tubular products manufactured from solid billets pierced and extruded without a welded seam, offering high pressure capability and reliable mechanical properties.

Stainless steel seamless pipes are used in oil and gas, chemical processing, power generation, pharmaceutical, food processing, and water treatment industries where high pressure or severe corrosion is present.

Seamless pipes are manufactured from solid billets without a weld seam, while welded pipes are made by forming and joining steel strips or plates. Design codes apply a weld joint efficiency factor to welded pipe, whereas seamless pipe carries full allowable stress.

ASTM A312 covers seamless and welded austenitic stainless steel pipe (we supply the seamless option), while ASTM A790 covers seamless and welded duplex stainless steel pipe.

SS 304 is suitable for general corrosion-resistant applications, while SS 316 contains 2 to 3% molybdenum, providing significantly better resistance to chloride-related pitting and crevice corrosion.

ASTM A312 covers stainless steel pipe sized by Nominal Pipe Size (NPS) and schedule. ASTM A213 covers seamless boiler, superheater, and heat-exchanger tubes sized by actual outside diameter (OD) and wall thickness.

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