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Stainless Steel Pipes Manufacturer and Supplier in India

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Stainless Steel Pipes

Stainless steel pipes are those which resist corrosion and are used to convey liquids, gas, steam and process fluids. These pipes contain minimum 10.5% chromium and have an oxide layer on its surface which acts as protective covering for metal. We offer seamless and welded pipe in grade 304, 304L, 316L, 321, 904L and duplex. Select the grade based on temperature, pressure, nature of fluid and its corrosive environment. The standard specification of seamless and welded austenitic stainless steel pipe is ASTM A312 / ASME SA312 and its dimensions are as per ASME B36.19M. Sachin Steel Centre offers stainless steel pipes in Mumbai to industrial buyers in India and overseas markets. 

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Table Of Content

Technical Data

Specifications of Stainless Steel Pipes

Parameter / Feature

Manufacturing & Material Specification

Standard Specifications

ASTM A312 / ASME SA312, ASTM A790 / ASME SA790 (duplex), EN 10216-5

Supply Standards

ASTM, ASME and EN (Werkstoff numbers are shown in the grade table)

Size Range

NPS 1/8 to 12 (DN 6 to DN 300), Sch 5S, 10S, 40S and 80S; larger sizes on request

Wall Thickness

Per ASME B36.19M schedules 5S to 80S; heavier walls on request

Supply Lengths

Single Random Length (SRL): 5 to 7 metres
Double Random Length (DRL): 10 to 12 metres
Cut to length: as per customer requirement

Manufacturing Types

Seamless, welded, ERW (electric resistance welded), EFW (electric fusion welded, on request)

Shape

Round pipe. Square and rectangular tube is supplied under ASTM A554

Process

Seamless (pierced billet, hot finished or cold finished); welded (formed from cold rolled strip)

Surface Finishes

Cold finished, bright annealed, polished, annealed & pickled, or custom finishes

Austenitic Grades to A312

TP304 / 304L / 304H, TP316 / 316L / 316H, TP310S, TP317L, TP321 / 321H, TP347 / 347H

Inspection & Test Reports

EN 10204 3.1 mill test certificate (MTC), chemical and mechanical reports, PMI, visual inspection, non-destructive test reports, third party inspection (TPI) on request

Chemical Composition of Stainless Steel Pipes

Grade

Carbon (C) max

Chromium (Cr)

Nickel (Ni)

Molybdenum (Mo)

Other Additions

304

0.08%

18.0 to 20.0%

8.0 to 11.0%

n/a

n/a

304L

0.035%

18.0 to 20.0%

8.0 to 13.0%

n/a

n/a

316

0.08%

16.0 to 18.0%

11.0 to 14.0%

2.0 to 3.0%

n/a

316L

0.035%

16.0 to 18.0%

10.0 to 15.0%

2.0 to 3.0%

n/a

321

0.08%

17.0 to 19.0%

9.0 to 12.0%

n/a

Ti 5 × (C+N) min, 0.70 max

347

0.08%

17.0 to 19.0%

9.0 to 13.0%

n/a

Nb 10 × C min, 1.00 max

310S

0.08%

24.0 to 26.0%

19.0 to 22.0%

n/a

n/a

904L

0.020%

19.0 to 23.0%

23.0 to 28.0%

4.0 to 5.0%

Cu 1.0 to 2.0%

Duplex 2205 (S32205)

0.030%

22.0 to 23.0%

4.5 to 6.5%

3.0 to 3.5%

N 0.14 to 0.20%

Super Duplex 2507 (S32750)

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 Pipes

Grade Classification

Grades Included

Ultimate Tensile Strength (MPa) min

0.2% Yield Strength (MPa) min

Elongation in 2 in. (%) min

Standard austenitic

304 / 316 / 321 / 347 / 310S

515

205

35

Low carbon austenitic

304L / 316L

485

170

35

Super austenitic

904L

490

215

35

Duplex stainless

2205 (S32205)

655

450

25

Duplex stainless

2205 (S31803)

620

450

25

Different Grades of Stainless Steel Pipes

Grade

Classification

UNS

EN / Werkstoff

304

Austenitic (18/8 standard)

S30400

1.4301

304L

Austenitic (18/8 standard)

S30403

1.4307

304H

Austenitic (18/8 standard)

S30409

1.4948

316

Austenitic (molybdenum bearing)

S31600

1.4401

316L

Austenitic (molybdenum bearing)

S31603

1.4404

316H

Austenitic (molybdenum bearing)

S31609

1.4919

316Ti

Austenitic (molybdenum bearing)

S31635

1.4571

317L

Austenitic (molybdenum bearing)

S31703

1.4438

321

Austenitic (titanium stabilised)

S32100

1.4541

321H

Austenitic (titanium stabilised)

S32109

1.4878

347 / 347H

Austenitic (niobium stabilised)

S34700 / S34709

1.4550 / 1.4912

310S

High temperature austenitic

S31008

1.4845

904L

Super austenitic

N08904

1.4539

Duplex 2205

Duplex

S31803 / S32205

1.4462

Super Duplex 2507

Super duplex

S32750

1.4410

Weight Chart of Seamless Stainless Steel Pipe

Nominal Pipe Size (NPS)

Outside Diameter (O.D.)

Sch 5S
Wall Thickness / Weight

Sch 10S
Wall Thickness / Weight

Sch 40S
Wall Thickness / Weight

Sch 80S
Wall Thickness / Weight

1/8"

10.29 mm

n/a

1.24 mm
0.28 kg/m | 0.19 lb/ft

1.73 mm
0.37 kg/m | 0.25 lb/ft

2.41 mm
0.48 kg/m | 0.32 lb/ft

1/4"

13.72 mm

n/a

1.65 mm
0.50 kg/m | 0.34 lb/ft

2.24 mm
0.65 kg/m | 0.43 lb/ft

3.02 mm
0.81 kg/m | 0.55 lb/ft

3/8"

17.15 mm

n/a

1.65 mm
0.64 kg/m | 0.43 lb/ft

2.31 mm
0.86 kg/m | 0.58 lb/ft

3.20 mm
1.12 kg/m | 0.75 lb/ft

1/2"

21.34 mm

1.65 mm
0.82 kg/m | 0.55 lb/ft

2.11 mm
1.02 kg/m | 0.69 lb/ft

2.77 mm
1.29 kg/m | 0.87 lb/ft

3.73 mm
1.65 kg/m | 1.11 lb/ft

3/4"

26.67 mm

1.65 mm
1.04 kg/m | 0.70 lb/ft

2.11 mm
1.30 kg/m | 0.88 lb/ft

2.87 mm
1.72 kg/m | 1.15 lb/ft

3.91 mm
2.24 kg/m | 1.50 lb/ft

1"

33.40 mm

1.65 mm
1.32 kg/m | 0.88 lb/ft

2.77 mm
2.13 kg/m | 1.43 lb/ft

3.38 mm
2.55 kg/m | 1.71 lb/ft

4.55 mm
3.30 kg/m | 2.22 lb/ft

1-1/4"

42.16 mm

1.65 mm
1.68 kg/m | 1.13 lb/ft

2.77 mm
2.74 kg/m | 1.84 lb/ft

3.56 mm
3.45 kg/m | 2.32 lb/ft

4.85 mm
4.55 kg/m | 3.06 lb/ft

1-1/2"

48.26 mm

1.65 mm
1.93 kg/m | 1.30 lb/ft

2.77 mm
3.17 kg/m | 2.13 lb/ft

3.68 mm
4.12 kg/m | 2.77 lb/ft

5.08 mm
5.51 kg/m | 3.70 lb/ft

2"

60.33 mm

1.65 mm
2.43 kg/m | 1.64 lb/ft

2.77 mm
4.01 kg/m | 2.69 lb/ft

3.91 mm
5.54 kg/m | 3.73 lb/ft

5.54 mm
7.63 kg/m | 5.13 lb/ft

2-1/2"

73.03 mm

2.11 mm
3.76 kg/m | 2.53 lb/ft

3.05 mm
5.36 kg/m | 3.60 lb/ft

5.16 mm
8.80 kg/m | 5.91 lb/ft

7.01 mm
11.63 kg/m | 7.82 lb/ft

3"

88.90 mm

2.11 mm
4.60 kg/m | 3.09 lb/ft

3.05 mm
6.58 kg/m | 4.42 lb/ft

5.49 mm
11.51 kg/m | 7.73 lb/ft

7.62 mm
15.57 kg/m | 10.46 lb/ft

3-1/2"

101.60 mm

2.11 mm
5.28 kg/m | 3.55 lb/ft

3.05 mm
7.55 kg/m | 5.08 lb/ft

5.74 mm
13.83 kg/m | 9.29 lb/ft

8.08 mm
18.99 kg/m | 12.76 lb/ft

4"

114.30 mm

2.11 mm
5.95 kg/m | 4.00 lb/ft

3.05 mm
8.53 kg/m | 5.73 lb/ft

6.02 mm
16.38 kg/m | 11.01 lb/ft

8.56 mm
22.75 kg/m | 15.29 lb/ft

5"

141.30 mm

2.77 mm
9.64 kg/m | 6.48 lb/ft

3.40 mm
11.78 kg/m | 7.92 lb/ft

6.55 mm
22.18 kg/m | 14.91 lb/ft

9.53 mm
31.56 kg/m | 21.21 lb/ft

6"

168.28 mm

2.77 mm
11.52 kg/m | 7.74 lb/ft

3.40 mm
14.09 kg/m | 9.47 lb/ft

7.11 mm
28.80 kg/m | 19.35 lb/ft

10.97 mm
43.37 kg/m | 29.14 lb/ft

8"

219.08 mm

2.77 mm
15.06 kg/m | 10.12 lb/ft

3.76 mm
20.35 kg/m | 13.67 lb/ft

8.18 mm
43.36 kg/m | 29.14 lb/ft

12.70 mm
65.87 kg/m | 44.26 lb/ft

10"

273.05 mm

3.40 mm
23.04 kg/m | 15.48 lb/ft

4.19 mm
28.31 kg/m | 19.03 lb/ft

9.27 mm
61.46 kg/m | 41.30 lb/ft

12.70 mm
83.10 kg/m | 55.84 lb/ft

12"

323.85 mm

3.96 mm
31.84 kg/m | 21.39 lb/ft

4.57 mm
36.67 kg/m | 24.64 lb/ft

9.53 mm
75.28 kg/m | 50.59 lb/ft

12.70 mm
99.31 kg/m | 66.74 lb/ft

Dimensions Chart of Stainless Steel Pipe

Schedule Designation

NPS Size Range (inches)

Wall Type

Primary Application / Pressure Class

Sch 5S

1/2 to 12

Light wall

Low pressure sanitary and chemical process lines

Sch 10S

1/8 to 12

Standard thin wall

Industrial corrosion service and water piping

Sch 40S

1/8 to 12

Standard wall (STD)

General and medium pressure service

Sch 80S

1/8 to 12

Extra strong (XS)

High pressure fluid handling and severe service

Types of Stainless Steel Pipes

ASME SA 312 SS Pipe
ASME SA 312 SS Pipe
ASTM A312 Seamless Stainless Steel Pipe
ASTM A312 Seamless Stainless Steel Pipe
Stainless Steel Rectangular Pipe
Stainless Steel Rectangular Pipe
Stainless Steel Round Pipe
Stainless Steel Round Pipe
Stainless Steel Schedule 40 Pipe
Stainless Steel Schedule 40 Pipe
Stainless Steel Seamless Pipe

Applications and Industrial Uses of Stainless Steel Pipes

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

Frequently Asked Questions

Stainless steel pipes are hollow steel products containing at least 10.5% chromium, designed to transport liquids, gases, steam and other fluids with good corrosion resistance.

Stainless steel pipes are used in oil and gas, chemical processing, food and beverage, pharmaceutical, power generation and water treatment industries.

Common grades include 304, 304L, 316, 316L, 321, 310S, 904L and duplex stainless steel grades such as 2205.

Seamless pipes are manufactured without a welded joint, while welded pipes are formed from steel strips or plates joined by welding.

Yes, stainless steel pipes resist corrosion because chromium forms a protective oxide layer on the surface. The level of resistance depends on the grade and operating environment.

The number sets the wall thickness for each nominal pipe size under ASME B36.19M. A higher number is a thicker wall, so Sch 80S carries more pressure than Sch 10S at the same outside diameter. The S marks stainless pipe schedules.

ASTM A312 / ASME SA312 covers seamless and welded austenitic stainless steel pipe. Duplex pipe is ASTM A790, and tube is ASTM A269, A249 or A213 depending on the use.

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