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Stainless Steel 316 Seamless Pipe Manufacturer and Supplier in India

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Stainless Steel 316 Seamless Pipe

Stainless Steel 316 Seamless Pipes are made from solid stainless steel billets, with no longitudinal seam, providing a quality pipe for challenging industrial piping applications. The composition of this austenitic grade is in the range of around 16-18% chromium, 10-14% nickel and 2-3% molybdenum which gives it good corrosion resistance in chloride containing and mildly acidic environments. They have many applications such as chemical processing, marine installations, pharmaceutical factories, food processing and fluid transporting systems. TP316 seamless pipes are specified in ASTM A312 / ASME SA312 and pipe dimensions are specified in ASME B36.19M. Low carbon content applications can also be made from TP316L. Sachin Steel Centre is a reputed supplier of Stainless Steel 316 Seamless Pipes in India and provides quality solutions in material products to the industrial applications in addition to global shipping support.

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Table Of Content

Technical Data

Specifications of Stainless Steel 316 Seamless Pipes

Parameter

Specification Detail

Standard

ASTM A312 / ASME SA312

Grades

TP316 (UNS S31600), TP316L (UNS S31603), TP316H (UNS S31609 on request)

Dimensional Standard

ASME B36.19M

Size Range

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

Schedules

Sch 5S, Sch 10S, Sch 40S, Sch 80S

Length Options

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

End Finish

Plain End (PE), Bevelled End (BE), Threaded (NPT/BSPT)

Surface Finish

Annealed & Pickled (AP), Bright Annealed (BA), Polished

Heat Treatment Condition

Solution annealed and rapidly quenched

Quality & NDT Testing

Hydrostatic testing on each length, or Non-Destructive Electric Testing (Eddy Current / UT) per ASTM A312; Intergranular Corrosion Test (ASTM A262 Practice E) on request

Certification

EN 10204 3.1 Material Test Certificate per lot; EN 10204 3.2 Third-Party Inspection on request

Chemical Composition of Stainless Steel 316 Seamless Pipes

Element

TP316 (UNS S31600)

TP316L (UNS S31603)

TP316H (UNS S31609)

Carbon (C)

0.08% max

0.035% max

0.04 to 0.10%

Chromium (Cr)

16.0 to 18.0%

16.0 to 18.0%

16.0 to 18.0%

Nickel (Ni)

11.0 to 14.0%

10.0 to 15.0%

11.0 to 14.0%

Molybdenum (Mo)

2.00 to 3.00%

2.00 to 3.00%

2.00 to 3.00%

Manganese (Mn)

2.00% max

2.00% max

2.00% max

Silicon (Si)

1.00% max

1.00% max

1.00% max

Phosphorus (P)

0.045% max

0.045% max

0.045% max

Sulphur (S)

0.030% max

0.030% max

0.030% max

Iron (Fe)

Balance

Balance

Balance

SS 316 Seamless Pipes Mechanical Properties

Grade

Ultimate Tensile Strength (min)

0.2% Yield Strength (min)

Elongation (2 in.), min

Hardness (max)

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

TP316H

515 MPa (75 ksi)

205 MPa (30 ksi)

35%

90 HRB / 192 HBW

Physical Properties of Stainless Steel 316 Seamless Pipes

Property

Metric Value

Imperial / Standard Value

Density

8.0 g/cm³ (8000 kg/m³)

0.289 lb/in³

Melting Range

1375 to 1400 °C

2507 to 2552 °F

Elastic Modulus (E)

193 GPa

28.0 × 106 psi

Thermal Conductivity (at 100 °C)

16.3 W/m·K

9.4 BTU/ft·h·°F (at 212 °F)

Thermal Conductivity (at 500 °C)

21.5 W/m·K

12.4 BTU/ft·h·°F (at 932 °F)

Mean Thermal Expansion (0 to 100 °C)

15.9 µm/m°C

8.8 × 10−6/°F (32 to 212 °F)

Mean Thermal Expansion (0 to 315 °C)

16.2 µm/m°C

9.0 × 10−6/°F (32 to 600 °F)

Mean Thermal Expansion (0 to 538 °C)

17.5 µm/m°C

9.7 × 10−6/°F (32 to 1000 °F)

Specific Heat (0 to 100 °C)

500 J/kg·K

0.12 BTU/lb·°F (32 to 212 °F)

Electrical Resistivity

740 nΩ·m (74 µΩ·cm)

29.1 µΩ·in

Magnetic Response

Non-magnetic when fully annealed

May become slightly magnetic after cold work

Equivalent Grades of Stainless Steel 316 Seamless Pipes

Standard Grade Designation

UNS Designation

Werkstoff Nr.

EN Name

JIS Designation

TP316

S31600

1.4401

X5CrNiMo17-12-2

SUS316

TP316L

S31603

1.4404

X2CrNiMo17-12-2

SUS316L

316Ti

S31635

1.4571

X6CrNiMoTi17-12-2

SUS316Ti

Dimensions and Weight Chart of SS 316 Seamless Pipe

NPS

Outside Diameter (OD)

Sch 5S Wall

Sch 5S Weight

Sch 10S Wall

Sch 10S Weight

Sch 40S Wall

Sch 40S Weight

Sch 80S Wall

Sch 80S Weight

½″

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

¾″

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

1¼″

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

1½″

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

2½″

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 SS 316 Seamless Pipe

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

Frequently Asked Questions

Molybdenum-bearing austenitic stainless steel pipe (UNS S31600, EN 1.4401) manufactured without a weld seam, manufactured to ASTM A312 / ASME SA312 TP316.

316L caps carbon at 0.035% max compared to 0.08% for standard 316, which prevents carbide precipitation during welding and eliminates intergranular corrosion risk. Its yield strength is slightly lower (170 MPa vs. 205 MPa).

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. ASTM A269 covers general service tubing.

Seamless pipe is formed from a pierced solid billet and has no weld seam; welded pipe is formed from strip or plate and joined along a longitudinal seam. A312 covers both, so specify “seamless” on your enquiry.

Choose 316 where chloride, coastal, or mildly acidic exposure makes 304’s pitting resistance inadequate. The $2\text{ to }3\%$ molybdenum content provides increased corrosion protection. For mild or dry service, 304 is usually more economical.

SS 316 handles splash and atmospheric salt exposure exceptionally well, but warm or stagnant seawater can cause pitting and crevice corrosion. For continuously immersed seawater duty, consult us regarding 6Mo, Duplex 2205, or Super Duplex 2507 options.

Grade 316H maintains carbon between 0.04 and 0.10%, which provides higher creep strength at temperatures above 500°C. Choose 316H for sustained high-temperature service and specify your operating temperature when requesting a quote.

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