Tri Round Bars

Stainless Steel Seamless Pipes 321/ 321H Grade Manufacturer, Supplier, Stockist & Exporter

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321H STAINLESS STEEL PIPES, 321H STAINLESS STEEL TUBES, 321H STAINLESS STEEL SEAMLESS PIPE & TUBES, 321H STAINLESS STEEL WELDED PIPES AND TUBES, 321H STAINLESS STEEL TUBING, UNS S32109 PIPES AND TUBES

DETAILED INFORMATION

We offer Seamless SS 321 / 321H Tubes in an austenitic chromium nickel alloy with Titanium added, making them an excellent choice for environments with elevated temperatures.

Our company is one of the leading manufacturers, stockists, exporters, stock holders and suppliers of Stainless Steel 321 Seamless Tubing that meet the international and national quality standards. For applications requiring higher strength and tighter tolerances, our stainless steel cold drawn 321 tubes are an excellent quality choice. Our SS 321H Tubes are known for their high quality, zero defects, and superior performance. With the addition of titanium, SS 321 / 321H Seamless Tubes are a standard austenitic chromium nickel alloy.

Oil refinery equipment, industrial boilers, pressure vessels, chemical and pharmaceutical equipment, petrochemical refineries, and chemical process heat exchangers are among the applications for stainless steel 321 tubing. Engineering, chemical, sugar, and pharmaceutical industries use these premium qualities of SS 321H Tubing. The SS 321H Seamless Tubes are available in both standard and customized sizes.

The alloy 321H is stabilized with titanium. Stainless Steel 321H Pipe/ Tube is an austenitic steel that can withstand carbide precipitation temperatures that other grades cannot. These pipes and tubes can withstand temperatures between 800 and 1500 degrees Fahrenheit. The Stainless Steel 321H Pipe has a higher carbon content than the 321 alloy. Carbon concentrations in these pipes range from 0.04-0.10. 

As a result, 321H stainless steel tubes have an outer diameter of 6mm-250mm and a thickness range of 0.3mm-50mm. Tubes of this type are available in a variety of grades. Stainless Steel 1.4878 Tubing is widely used in petroleum refineries, boiler tubes, high-pressure steam pipes, heavy-duty exhausts, and manifolds. Our company is the leading stockist of Stainless Steel 321H Pipe/ Tube in India. Our goal is to produce the best products on the market at the most reasonable price.

321H pipes can be manufactured seamlessly or by welding. SS 321H Seamless Pipe is made from one piece of steel. The tensile strength of these pipes is above 515Mpa, and the yield strength is above 205Mpa. 321H SS Welded Pipe doesn’t suffer from post-weld carburization or corrosion. Welded pipes are strong, durable, and require little maintenance. Fusion welding is used to produce UNS S32109 ERW Pipe. 

It is possible to elongate these pipes by 40% while maintaining excellent performance and strength. AISI 321H Schedule 40 Pipe has excellent low temperature toughness and ductility. Most standard welding processes can be used to weld these pipes. After cold-rolling, SS grade 1.4878 Polished Pipe is produced. Polished pipes are smooth, which makes them more resistant to corrosion and other corrosive mediums. Our 321H Stainless Steel Pipe, along with our other products, can be customized to your specifications.

DIN 1.4878 Stainless Steel Round Pipe is a standard pipe used throughout this grade. The main purpose of these pipes is to transport fluids and gases from one place to another. Unlike most other products in these grades, SA 312 TP 321H Square Pipe cannot be hot-rolled to harden. Support and structural integrity are provided by these pipes. Known for its strength and hardness, ASTM A312 Gr.TP 321H Rectangular Pipe is used in aerospace and storage.

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Specification Of Stainless Steel 321h Pipe

Distributor of SA 312 TP 321H Square Pipe and 321H Stainless Steel Tube in various Thicknesses, Gauges and Dimensions

International Specification

ASTM A312/ ASME SA 312 TP 321H

Seamless Pipes Size

  • Outer Diameter: 4 to 219mm
  • Wall Thickness: 0.5 to 20mm

Welded Pipe Size

  • Outer Diameter: 5.0 – 1219.2 mm

EFW Pipe Size

  • Outer Diameter: 5.0 – 1219.2 mm

Wall Thickness

Schedule 5, Schedule 40, Schedule10, Schedule 80, Schedule 160, Schedule 80S, Schedule XXS, Schedule XS

techniques

EFW/ Seamless / ERW / Welded / LSAW/ Fabricated / Seam-Welded / CDW/ Redrawn

Form

Round, Square, Rectangular

Length

Double Random & Required Length End, Single Random, Plain End, Treaded, Beveled End

Condition

Hot Finished, Annealed and Pickled, Bright Annealed, Polished, Cold Drawn

Chemical Composition Of 321h Stainless Steel Pipes And Tubes

The Chemical Composition of grade 321H Stainless Steel is outlined in the following tableTypical compositional ranges for grade 321 stainless steels Pipes

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

Other

321

min. 

max

– 

0.08

2.00

0.75

0.045

0.030

17.0 

19.0

9.0 

12.0

0.10

Ti=5(C+N) 

0.70

321H

min. 

max

0.04 

0.10

2.00

0.75

0.045

0.030

17.0 

19.0

9.0 

12.0

Ti=4(C+N) 

0.70

Mechanical Properties Of 321h Stainless Steel Pipes And Tubes

The Mechanical Properties of grade 321H Stainless Steel are displayed in the following table.

Grade

Tensile Strength (MPa) min

Yield Strength 0.2% Proof (MPa) min

Elongation (% in 50mm) min

Hardness

Rockwell B (HR B) max

Brinell (HB) max

321

515

205

40

95

217

321H

515

205

40

95

217

321H also has a requirement for a grain size of ASTM No 7 or coarser.

321h Stainless Steel Pipe Weight Chart

Nominal Pipe Sizes

Outside Diameter

Wall Thickness

 

Weight

Weight

Inch

MM

Inch

MM

Schedule

kg/Meter

Lbs/feet

1/2

0.840

21

0.109

2.769

40 STD

1.268

0.851

 

 

 

0.147

3.734

80 STD

1.621

1.088

3/4

1.050

27

0.113

2.870

40 STD

1.684

1.131

 

 

 

0.154

3.912

80 STD

2.195

1.474

1

1.315

33

0.133

3.378

40 STD

2.501

1.679

 

 

 

0.179

4.547

80 STD

3.325

2.172

1 1/4

1.660

42

0.140

3.556

40 STD

3.385

2.273

 

 

 

0.191

4.851

80 STD

4.464

2.997

1 1/2

1.900

48

0.145

3.683

40 STD

4.048

2.718

 

 

 

0.200

5.080

80 STD

5.409

3.361

2

2.375

60

0.154

3.912

40 STD

5.441

3.653

 

 

 

0.218

5.537

80 STD

7.480

5.022

2 1/2

2.875

73

0.203

5.516

40 STD

8.629

5.793

 

 

 

0.276

7.010

80 STD

11.411

7.661

3

3.500

89

0.216

5.486

40 STD

11.284

7.576

 

 

 

0.300

7.620

80 STD

15.272

10.253

4

4.500

114

0.237

6.020

 

16.073

10.790

 

 

 

0.337

8.560

 

22.318

14.983

6

6.625

168

0.188

4.775

 

19.252

12.924

 

 

 

0.203

5.516

 

20.739

13.923

 

 

 

0.219

5.563

 

22.318

14.983

 

 

 

0.250

6.350

 

25.354

17.021

 

 

 

0.280

7.112

40 STD

58.263

18.974

 

 

 

0.312

7.925

 

31.334

21.036

 

 

 

0.375

9.525

 

37.285

25.031

 

 

 

0.432

10.973

80 XHY

42.561

28.573

 

 

 

0.500

12.700

 

48.719

32.708

8

8.625

219

0.188

4.775

 

25.233

16.940

 

 

 

0.203

5.156

 

27.198

18.259

 

 

 

0.219

5.563

 

29.286

19.661

 

 

 

0.250

6.350

20

33.308

22.361

 

 

 

0.277

7.036

30

36.786

24.696

 

 

 

0.322

8.179

40

42.352

28.554

 

 

 

0.375

9.525

 

49.216

33.041

 

 

 

0.406

10.312

60

53.085

35.638

 

 

 

0.500

12.700

80 XHY

64.627

43.388

10

10.750

273

0.188

4.775

 

31.588

21.207

 

 

 

0.219

5.563

 

36.689

24.631

 

 

 

0.250

6.350

20

41.759

28.035

 

 

 

0.307

7.798

30

51.002

34.240

 

 

 

0.344

8.738

 

56.946

38.231

 

 

 

0.365

9.271

40 STD

63.301

40.483

 

 

 

0.438

11.125

 

71.852

48.238

 

 

 

0.500

12.700

60 XHY

81.530

54.735

 

 

 

0.594

15.088

80

95.969

64.429

12

12.750

324

0.188

4.775

 

37.570

25.222

 

 

 

0.219

5.563

 

43.657

29.309

 

 

 

0.250

6.350

 

49.713

33.375

 

 

 

0.281

7.137

 

55.739

37.420

 

 

 

0.312

7.925

 

61.735

41.445

 

 

 

0.375

9.525

 

73.824

49.562

 

 

 

0.406

10.312

 

79.727

53.525

 

 

 

0.500

12.700

 

97.438

65.415

 

 

 

0.562

14.275

 

108.966

73.154

14

14.000

356

0.188

4.775

 

41.308

27.732

 

 

 

0.219

5.563

 

48.012

32.233

 

 

 

0.250

6.350

20

54.685

36.713

 

 

 

0.281

7.137

 

61.327

41.172

 

 

 

0.312

7.925

 

67.939

45.611

 

 

 

0.375

9.525

STD

81.281

54.568

 

 

 

0.438

11.125

40

94.498

63.441

 

 

 

0.500

12.700

XHY

107.381

72.090

 

 

 

0.625

15.875

 

132.983

89.278

16”

16.000

406

0.188

4.775

 

47.290

21.748

 

 

 

0.219

5.563

 

54.980

36.910

 

 

 

0.250

6.350

10

62.639

42.053

 

 

 

0.281

7.137

 

70.268

47.174

 

 

 

0.312

7.925

20

77.866

52.275

 

 

 

0.344

8.738

 

85.677

57.519

 

 

 

0.375

9.525

30

STD

93.213

62.578

 

 

 

0.438

11.125

 

108.433

72.797

 

 

 

0.500

12.700

40

XHY

123.289

82.770

18

18.000

457

0.219

5.563

 

61.948

41.588

 

 

 

0.250

6.350

 

70.593

47.393

 

 

 

0.281

7.137

 

79.208

53.176

 

 

 

0.312

7.925

20

87.792

58.939

 

 

 

0.375

9.525

STD

105.144

70.588

 

 

 

0.438

11.125

30

122.369

82.152

 

 

 

0.500

12.700

XHY

139.198

93.450

 

 

 

0.562

14.275

40

155.904

104.666

 

 

 

0.625

15.875

 

172.754

115.978

20

20.000

508

0.250

6.350

 

78.547

52.733

 

 

 

0.282

7.163

 

88.458

59.386

 

 

 

0.312

7.925

 

97.719

65.604

 

 

 

0.375

9.525

20 STD

117.075

78.598

 

 

 

0.438

11.125

 

136.305

91.508

 

 

 

0.500

12.700

30 XHY

155.106

104.130

 

 

 

0.594

15.088

40

183.378

123.110

 

 

 

0.625

15.875

 

192.640

129.328

 

 

 

0.688

17.475

 

211.368

141.901

24

24.000

610

0.250

6.350

 

94.456

63.413

 

 

 

0.281

7.137

 

106.029

71.183

 

 

 

0.312

7.925

 

117.573

18.932

 

 

 

0.375

9.525

20 STD

140.938

64.618

 

 

 

0.438

11.125

 

164.176

110.219

 

 

 

0.500

12.700

XHY

186.923

125.490

 

 

 

0.625

15.875

 

232.410

156.028

 

 

 

0.688

17.475

40

255.148

171.293

 

 

 

0.750

19.050

 

277.401

186.233

30

30.000

762

0.250

6.350

 

118.318

79.433

 

 

 

0.281

7.137

 

132.851

89.189

 

 

 

0.312

7.925

10

147.353

98.925

 

 

 

0.375

9.525

STD

176.731

118.648

 

 

 

0.438

11.125

 

205.983

138.286

 

 

 

0.500

12.700

20 XHY

234.647

157.530

 

 

 

0.625

15.875

30

292.066

196.078

 

 

 

0.688

17.475

 

320.817

215.380

 

 

 

0.750

19.050

 

348.988

234.293

36

36.000

914

0.250

6.350

 

142.180

95.453

 

 

 

0.281

7.137

 

159.672

107.196

 

 

 

0.312

7.925

10

177.133

118.918

 

 

 

0.375

9.525

STD

215.525

142.678

 

 

 

0.438

11.125

 

247.790

166.353

 

 

 

0.500

12.700

20 XHY

282.372

198.570

 

 

 

0.625

15.875

 

351.723

236.128

 

 

 

0.688

17.475

 

386.487

259.467

 

 

 

0.750

19.050

 

420.576

282.353

42

42.000

1067

0.312

7.925

 

206.914

138.911

 

 

 

0.375

9.525

STD

248.319

166.708

 

 

 

0.500

12.700

XHY

33.097

221.610

 

 

 

0.750

19.050

 

492.163

330.413

48

48.000

1219

0.375

9.525

STD

284.112

190.738

 

 

 

0.438

11.125

 

331.404

222.487

 

 

 

0.500

12.700

XHY

377.822

253.650

 

 

 

0.750

19.050

 

563.750

378.473

 

 

 

0.875

22.225

 

655.969

440.383

Aisi 321h Schedule 40 Pipe Pressure Rating

Looking for Polished 321H Stainless Steel Pipe suppliers in India? Stockist of SS grade 1.4878 Pipe, Heat exchanger & Boiler Tubes in Mumbai

Pipe Size in inches

Schedule

Outside Diameter in Inch

Wall Thickness in Inch

Temperature

100

200

300

400

500

600

650

700

750

Allowable Stress

16700

16700

16700

15500

14400

13500

13200

12900

12600

1″

40

1.315

0.133

2205

2205

2205

2047

1902

1783

1743

1703

1664

80

1.315

0.179

3061

3061

3061

2841

2640

2475

2420

2365

2310

160

1.315

0.250

4493

4493

4493

4170

3874

3632

3552

3471

3390

1 1/2″

40

1.900

0.145

1629

1629

1629

1512

1404

1317

1287

1258

1229

80

1.900

0.200

2303

2303

2303

2138

1986

1862

1821

1779

1738

160

1.900

0.281

3362

3362

3362

3120

2899

2717

2657

2597

2536

2″

40

2.375

0.154

1371

1371

1371

1272

1182

1108

1083

1059

1034

80

2.375

0.218

1985

1985

1985

1843

1712

1605

1569

1534

1498

160

2.375

0.344

3283

3283

3283

3047

2831

2654

2595

2536

2477

3″

40

3.500

0.216

1301

1301

1301

1208

1122

1052

1028

1005

982

80

3.500

0.300

1844

1844

1844

1712

1590

1491

1458

1425

1391

160

3.500

0.438

2787

2787

2787

2587

2403

2253

2203

2153

2103

4″

40

4.500

0.237

1102

1102

1102

1023

950

891

871

851

831

80

4.500

0.337

1596

1596

1596

1482

1377

1291

1262

1233

1204

160

4.500

0.531

2611

2611

2611

2424

2552

2111

2064

2017

1970

5″

40

5.563

0.258

965

965

965

896

832

780

763

746

728

80

5.563

0.375

1428

1428

1428

1325

1231

1154

1129

1103

1077

160

5.563

0.625

2474

2474

2474

2296

2133

2000

1955

1911

1866

6″

40

6.625

0.280

877

877

877

814

756

709

693

677

661

80

6.625

0.432

1379

1379

1379

1280

1189

1115

1090

1065

1040

160

6.625

0.719

2382

2382

2382

2211

2054

1925

1883

1840

1797

8″

40

8.625

0.322

771

771

771

716

665

623

610

596

582

80

8.625

0.500

1218

1218

1218

1131

1050

985

963

941

919

160

8.625

0.906

2298

2298

2298

2133

1982

1858

1817

1775

1734

10″

40

10.750

0.365

699

699

699

649

603

565

553

540

528

80

10.750

0.594

1159

1159

1159

1075

999

937

916

895

874

160

10.750

1.125

2289

2289

2289

2124

1974

1850

1809

1768

1727

Equivalent Grades Of Uns S31603 Seamless Pipe

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 316L 1.4404 / 1.4435 S31603 SUS 316L 316S11 / 316S13 03Ch17N14M3 / 03Ch17N14M2 Z3CND17-11-02 / Z3CND18-14-03 X2CrNiMo17-12-2 / X2CrNiMo18-14-3

Dimension Table Of Sa 312 Tp 321h Square Pipe

Nominal size in inches

Outside diameter in inches

Outside diameter in mm

Wall thickness in inches

Wall thickness in mm

Weight [lbs/feet]

Weight [kg/meter]

1/8 6

0.41

10.3

0.068

1.73

0.24

0.37

1/4 8

0.54

13.7

0.088

2.24

0.42

0.63

3/8 10

0.68

17.1

0.091

2.31

0.57

0.84

1/2 15

0.84

21.3

0.109

2.77

0.85

1.27

3/4 20

1.05

26.7

0.113

2.87

1.13

1.69

1 25

1.32

33.4

0.133

3.38

1.68

2.5

1 1/4 32

1.66

42.2

0.14

3.56

2.27

3.39

1 1/2 40

1.9

48.3

0.145

3.68

2.72

4.05

2 50

2.375

60.3

0.154

3.91

3.65

5.44

2 1/2 65

2.875

73

0.203

5.16

5.79

8.63

3 80

3.5

88.9

0.216

5.49

7.58

11.29

3 1/2 90

4

101.6

0.226

5.74

9.11

13.57

4 100

4.5

114.3

0.237

6.02

10.79

16.07

5 125

5.563

141.3

0.258

6.55

14.62

21.77

6 150

6.625

168.3

0.28

7.11

18.97

28.26

8 200

8.625

219.1

0.322

8.18

28.55

42.55

10 250

10.75

273

0.365

9.27

40.48

60.31

12 300

12.75

323.8

0.406

10.31

53.52

79.73

14 350

14

355.6

0.437

11.13

54.57

94.55

16 400

16

406.4

0.5

12.7

82.77

123.3

18 450

18

457

0.562

14.27

104.67

155.8

20 500

20

508

0.594

15.09

123.11

183.42

24 600

24

610

0.688

17.48

171.29

255.41

32 800

32

813

0.688

17.48

230.08

342.91

321h Stainless Steel Pipes And Tubes Physical Properties

Physical properties of 321H grade stainless steel in the annealed condition

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
321 8027 193 16.6 17.2 18.6 16.1 22.2 500 720

Grade Specification Comparison For 321 Stainless Steel Pipes And Tubes

Grade Specifications for 321H grade stainless steel

Grade

UNS No

Old British

Euronorm

Swedish SS

Japanese JIS

BS

En

No

Name

321

S32100

321S31

58B, 58C

1.4541

X6CrNiTi18-10

2337

SUS 321

321H

S32109

321S51

1.4878

X10CrNiTi18-10

SUS 321H

347

S34700

347S31

58G

1.4550

X6CrNiNb18-10

2338

SUS 347

321h Stainless Steel Pipes And Tubes Range

321H Stainless Steel Pipe & Tubes Specification ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312
321H Stainless Steel Pipe & Tubes Grades 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.
321H Stainless Steel Pipe & Tubes Type Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish
321H Stainless Steel Pipe & Tubes Outer Diameter Size

Seamless – 1/2″ NB TO 18″ NB

Welded / ERW- 1″ NB TO 16″ NB

EFW – 8″ NB TO 110″ NB

321H Stainless Steel Pipe & Tubes Wall Thickness Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness)
321H Stainless Steel Pipe & Tubes Length 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
321H Stainless Steel Pipe & Tubes Ends Plain Ends / Beveled Ends
321H Stainless Steel Pipe & Tubes Delivery Conditions As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
321H Stainless Steel Pipe & Tubes Coating Electropolish, Mechanical Polish, Satin Finish, Passivated
321H Stainless Steel Pipe & Tubes Other Testing Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
321H Stainless Steel Pipe & Tubes Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME
321H Stainless Steel Pipe & Tubes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
321H Stainless Steel Pipe & Tubes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
321H Stainless Steel Pipe & Tubes Shipment & Transportation By Road – Truck / Train, By Sea – Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes
321H Stainless Steel Pipe & Tubes Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

321h Stainless Steel Pipes And Tubes Applications

The grade 316 steel can be made into plates, sheets, and coils to be used in the following:

  • Food preparation equipment particularly in chloride environments.
  • Laboratory benches & equipment.
  • Coastal architectural panelling, railings & trim.
  • Boat fittings.
  • Chemical containers, including for transport.
  • Heat Exchangers.
  • Woven or welded screens for mining, quarrying & water filtration.
  • Threaded fasteners.
  • Springs.

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