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Stainless Steel 321 / 321H Pipes & Tubes

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SS 321 Pipes, 321H SS Seamless Tubes, Manufacturer of ASTM A312 TP321 Welded Tube, Ready Stock Of SS 321H Tubing, Stainless Steel 321 Pipes & Tubes Supplier in Mumbai.

Unifit Metal Alloys is a known exporter and distributor of SS 321 / 321H Pipes and Tubes, which resists general corrosion and pitting better than standard nickel chromium steels.

Stainless Steel UNS S32100 Round Pipes is non-magnetic when annealed but can become mildly magnetic after cold treatment or welding. To eliminate tensions, the severely produced product should be annealed. It is a low-carbon variant that reduces hazardous carbide precipitation caused by welding. Professionals create these things using cutting-edge technology and high-tech machinery. Stainless Steel WNR 1.4541 Square Tubes is utilized in a variety of applications, including boat fittings, chemical transportation containers, heat exchangers, mining screens, nuts and bolts, springs, and medical implants. It cannot be toughened by heat treatment since annealing is done at temperatures between 1850 and 2050 degrees Fahrenheit (1010 and 1120 degrees Celsius), followed by a water quench.

UNS S32100 Seamless Pipes, SS 321H 90 Square Pipe, 321 Stainless Steel Electropolish Pipe, Stainless Steel 321H ERW Pipes, ANSI B16.9 Stainless Steel 321 Heat Ex-changer Tubes, DIN 1.4438 Welded Pipes, SS 321H Butt Weld Fittings, SS 321 Bush Hex Pipe Manufacturer In Mumbai, India.

We are a major stockiest, supplier, and exporter of this 321 Stainless Steel Rectangular Pipes, and our products are in great demand since they are manufactured in accordance with internationally established quality standards. It may be manufactured on carbon steel equipment and is easily blanked and perforated. Stainless Steel UNS S32109 Seamless Tubes has greater creep, stress to rupture, and tensile strength at increased temperatures than chromium-nickel austenitic steels. It is corrosion resistant in contaminated maritime environments. They work harden at a slower rate due to the greater nickel concentration. It protects the metal from corrosion by preventing carbide precipitation at grain boundaries.

Stainless Steel WNR 1.4940 Welded Pipes is forged at temperatures ranging from 2100°F to 2300°F (1150°C to 1260°C) depending on the degree of the deformation. This steel is commonly used in food processing, chemical processing, photographic, pharmaceutical, and textile finishing equipment, as well as marine exterior trim. 321H Stainless Steel Electropolish Tubes are well-known for their superior welding capabilities, with both fusion and resistance methods used to unite them. Molybdenum improves the overall corrosion resistance of these items, notably their resistance to pitting and crevice corrosion in chloride conditions. In corrosive situations, it is preferable.

Stainless Steel 321 / 321H Pipes & Tubes

Get a best quote for SS TP321 Pipes & Tubes, We Keep Bulk Stock of Stainless Steel 321H Seamless Bare Pipe at our stockyard, contact us to request a quote.

Stainless Steel 321 / 321H Pipes & Tubes Specifications

321 / 321H Pipes & Tubes Specifications ASTM A312, A249, A269, A358 / ASME SA312, SA249, SA269, SA358
Dimensional specification ANSI/ASME B36.19M, ANSI/ASME B36.10M
ASTM A312 TP 321 / 321H Seamless Pipe& Tube Size 1 / 2" NB - 16" NB
ASTM A312 TP 321 / 321H Welded Pipe& Tube Size 1 / 2" NB - 24" NB
ASTM A358 TP 321 / 321H EFW Pipe & Tube Size 6" NB - 24" NB
Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
SS 321 / 321H Pipes & Tubes Manufacturing Shapes Hydraulic, Round, Rectangle, Square, Hex, Honed
SS 321 / 321H Pipe & Tube Manufacturing Techniques Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Stainless Steel 321 / 321H Pipe & Tube Schedule Thickness Range SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
SS 321 / 321H Pipes & Tubes End Types Plain End, Beveled End, Treaded One End, TBE (Treaded Both Ends)
Delivery Condition of SS 321 / 321H Pipe & Tube Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Surface Finish No.1, No.4, No.8 Mirror Finish, 2B
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing
Inspection and Test Reports EN 10204 3.1, Mill Test Certificates, Chemical Reports, PMI Test Reports, Mechanical Reports, Third Party Inspection, NABL Approved Lab, Visual Inspection, Destructive Test and Non Destructive Test Reports
Marking Specification
Grade
Nominal Pipe Sizes
Pipe Schedule or Wall Thickness
Manufacturing Method (Seamless / Welded)
Heat Number
Manufacturer’s Name or Custom Logo - on request
Marked Pipe Sample: ANSI B36.19 ASTM A 312 TP 321 / 321H 12" NB SCH 40S SEAMLESS HEAT NO. XXXX
Outside Finish 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Packing of SS 321 / 321H Pipes & Tubes Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials Sizes and Specifications other than above can be on request

SS 321 / 321H Pipes & Tubes Equivalent Grades

STANDARDUNS WERKSTOFF NR.AFNORENJISBSGOST
SS 321S321001.4438-----
SS 321HS321091.4541-----

Stainless Steel 321 / 321H Pipes & Tubes Chemical Composition

STANDARDC MNSIPSCRNIMON
SS 3210.08 max.2.00 max.0.75 max.0.045 max.0.03 Max.17.0 – 19.09.0-12.0-0.1
SS 321H0.04 – 0.102.00 max.0.75 max.0.045 max.0.03 max.17.0 – 19.09.0-12.0-0.1

321 / 321H Stainless Steel Pipes & Tubes Mechanical Properties

Grade

Tensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) minHardness
Rockwell B (HR B) maxBrinell (HB) max
321/321H5152054095217

Various Types Of Stainless Steel 321 / 321H Pipes & Tubes

SS 321 / 321H Seamless Pipe

SS 321 / 321H Seamless Pipe

DIN 1.4438 45 Seamless Pipe UNS S32100 90 Seamless Pipe ANSI B16.9 TP321H Seamless Pipe Stainless Steel 321 Seamless Pipe
SS 321 / 321H Welded Pipe

SS 321 / 321H Welded Pipe

UNS S32109 Welded Pipe 321H Stainless Steel Welded Pipe DIN 1.4541 Welded Pipe ANSI B16.9 SUS 321 Welded Pipe
SS 321 / 321H EFW Pipe

SS 321 / 321H EFW Pipe

UNS S32100 EFW Pipe DIN 1.4438 EFW Pipe Stainless Steel 321 EFW Pipe ANSI B16.9 TP321H EFW Pipe
SS 321 / 321H ERW Pipe

SS 321 / 321H ERW Pipe

ANSI B16.9 SUS 321H ERW Pipe DIN 1.4541 ERW Pipe UNS S32109 ERW Pipe 321 Stainless Steel ERW Pipe
SS 321 / 321H Electropolish Pipe

SS 321 / 321H Electropolish Pipe

UNS S32100 Electropolish Pipe ANSI B16.9 TP321 Electropolish Pipe DIN 1.4438 Electropolish Pipe Stainless Steel 321H Electropolish Pipe
SS 321 / 321H Square Pipe

SS 321 / 321H Square Pipe

UNS S32109 Square Pipep ANSI B16.9 TP321 Square Pipe DIN 1.4541 Square Pipe 321H Stainless Steel Square Pipe
SS 321 / 321H Hollow Pipes

SS 321 / 321H Hollow Pipes

ANSI B16.9 SUS 321H Hollow Pipes Stainless Steel 321 Hollow Pipes DIN 1.4438 Hollow Pipes UNS S32100 Hollow Pipes
SS 321 / 321H Round Pipe

SS 321 / 321H Round Pipe

321 Stainless Steel Round Pipe DIN 1.4541 Round Pipe UNS S32109 Round Pipe ANSI B16.9 321H SS Round Pipe

Stainless Steel 321 / 321H Pipes & Tubes Pipes Size Range

NPS OD SCH 5S SCH 10S SCH 40S SCH 80S
1/4 13.72 1.65 2.24 3.02
3/8 17.15 1.65 2.31 3.2
1/2 21.34 1.65 2.11 2.77 3.73
3/4 26.67 1.65 2.11 2.87 3.91
1 33.4 1.65 2.77 3.38 4.55
1.25 42.16 1.65 2.77 3.56 4.85
1.5 48.26 1.65 2.77 3.68 5.08
2 60.33 1.65 2.77 3.91 5.54
2.5 73.03 2.11 3.05 5.16 7.01
3 88.9 2.11 3.05 5.49 7.62
3.5 101.6 2.11 3.05 5.74 8.08
4 114.3 2.11 3.05 6.02 8.56
5 141.3 2.77 3.4 6.55 9.53
6 168.28 2.77 3.4 7.11 10.97
8 219.08 2.77 3.76 8.18 12.7
10 273.05 3.4 4.19 9.27 12.7
12 323.85 3.96 4.57 9.53 12.7
14 355.6 3.96 4.78 9.53 12.7
16 406.4 4.19 4.78 9.53 12.7
18 457.2 4.19 4.78 9.53 12.7
20 508 4.78 5.54 9.53 12.7
22 558.8 4.78 5.54
24 609.6 5.54 6.35 9.53 12.7
26 660.4
28 711.2
30 762 6.35 7.92

Stainless Steel 321 / 321H Pipes & Tubes Weight Chart & Dimensions

PIPE
SIZE
OD
IN
INCHES
Pipe Schedules
5s
5
10s
10
20
30
40s
& Std.
40
60
80s
& E.H.
80
100
120
140
160
DBL
E.H.
1/8
.405
 
.035
.1383
.049
.1863
.049
.1863
 
 
.068
.2447
068
.2447
 
0.95
.3145
0.95
.3145
 
 
 
 
 
1/4
.540
 
.049
.2570
.065
.3297
.065
.3297
 
 
.088
.4248
088
.4248
 
.119
.5351
.119
.5351
 
 
 
 
 
3/8
.675
 
.049
.3276
.065
.4235
.065
.4235
 
 
.091
.5676
.091
.5676
 
.126
.7338
.126
.7338
 
 
 
 
 
1/2
.840
.065
.5383
.065
.5383
.083
.6710
.083
.6710
 
 
.109
.8510
.109
.8510
 
.147
1.088
.147
1.088
 
 
 
.187
1.304
.294
1.714
3/4
1.050
.065
.6838
.065
.6838
.083
.8572
.083
.8572
 
 
.113
1.131
.113
1.131
 
.154
1.474
.154
1.474
 
 
 
.218
1.937
.308
2.441
1
1.315
.065
.8678
.065
.8678
.109
1.404
.109
1.404
 
 
.133
1.679
.133
1.679
 
.179
2.172
.179
2.172
 
 
 
.250
2.844
.358
3.659
1-1/4
1.660
.065
1.107
.065
1.107
.109
1.806
.109
1.806
 
 
.140
2.273
.140
2.273
 
.191
2.997
.191
2.997
 
 
 
.250
3.765
.382
5.214
1-1/2
1.900
.065
1.274
.065
1.274
.109
2.085
.109
2.085
 
 
.145
2.718
.145
2.718
 
.200
3.631
.200
3.631
 
 
 
.281
4.859
.400
6.408
2
2.375
.065
1.604
.065
1.604
.109
2.638
.109
2.638
 
 
.154
3.653
.154
3.653
 
.218
5.022
.218
5.022
 
 
 
.343
7.444
.436
9.029
2-1/2
2.875
.083
2.475
.083
2.475
.120
3.531
.120
3.531
 
 
.203
5.793
.203
5.793
 
.276
7.661
.276
7.661
 
 
 
.375
10.01
.552
13.70
3
3.500
.083
3.029
.083
3.029
.120
4.332
.120
4.332
 
 
.216
7.576
.216
7.576
 
.300
10.25
.300
10.25
 
 
 
.437
14.32
.600
18.58
3-1/2
4.000
.083
3.472
.083
3.472
.120
4.973
.120
4.973
 
 
.226
9.109
.226
9.109
 
.318
12.51
.318
12.51
 
 
 
 
.636
22.85
4
4.500
.083
3.915
.083
3.915
.120
5.613
.120
5.613
 
 
.237
10.79
.237
10.79
.281
12.66
.337
14.98
.337
14.98
 
.437
19.01
 
.531
22.51
.674
27.54
4-1/2
5.000
 
 
 
 
 
 
.247
12.53
 
 
.355
17.61
 
 
 
 
 
.710
32.53
5
5.563
.109
6.349
.109
6.349
.134
7.770
.134
7.770
 
 
.258
14.62
.258
14.62
 
.375
20.78
.375
20.78
 
.500
27.04
 
.625
32.96
.750
38.55
6
6.625
.109
7.585
.109
7.585
.134
9.290
.134
9.290
 
 
.280
18.97
.280
18.97
 
.432
28.57
.432
28.57
 
.562
36.39
 
.718
45.30
.864
53.16
7
7.625
 
 
 
 
 
 
.301
23.57
 
 
.500
38.05
 
 
 
 
 
.875
63.08
8
8.625
.109
9.914
.109
9.914
.148
13.40
.148
13.40
.250
22.36
.277
24.70
.322
28.55
.322
28.55
.406
35.64
.500
43.39
.500
43.39
.593
50.87
.718
60.93
.812
67.76
.906
74.69
.885
72.42
9
9.625
 
 
 
 
 
 
.342
33.90
 
 
.500
48.72
 
 
 
 
 
 
10
10.750
.134
15.19
.134
15.19
.165
18.65
.165
18.70
.250
28.04
.307
34.24
.365
40.48
.365
40.48
.500
54.74
.500
54.74
.593
64.33
.718
76.93
.843
89.20
1.000
104.10
1.125
115.70
 
11
11.750
 
 
 
 
 
 
.375
45.55
 
 
.500
60.07
 
 
 
 
 
 
12
12.750
.156
21.07
.165
22.18
.180
24.16
.180
24.20
.250
33.38
.330
43.77
.375
49.56
.406
53.53
.562
73.16
.500
65.42
.687
88.51
.843
107.20
1.000
125.50
1.125
139.70
1.312
160.3
 
14
14.000
.156
23.07
 
.188
27.73
.250
36.71
.312
45.38
.375
54.57
.375
54.57
.437
63.37
.593
84.91
.500
72.09
.750
106.10
.937
130.70
1.093
150.70
1.250
170.20
1.406
189.10
 
16
16.000
.165
27.90
 
.188
31.75
.250
42.05
.312
52.36
.375
62.58
.375
62.58
.500
82.77
.656
107.50
.500
82.77
.843
136.50
1.031
164.80
1.218
192.30
1.427
223.50
1.593
245.10
 
18
18.000
.165
31.43
 
.188
35.76
.250
47.39
.312
59.03
.437
82.06
.375
70.59
.562
104.20
.750
138.20
.500
93.45
.937
170.80
1.156
208.00
1.375
244.10
1.562
274.20
1.781
308.50
 
20
20.000
.188
39.78
 
.218
46.05
.250
52.73
.375
78.60
.500
104.10
.375
78.60
.593
122.90
.812
166.40
.500
104.10
1.031
208.90
1.280
256.10
1.500
296.40
1.750
341.10
1.968
379.00
 
22
22.000
.188
43.80
 
.218
50.71
.250
58.07
.375
86.61
.500
114.81
.375
86.61
 
.875
197.41
.500
114.81
1.125
250.81
1.375
302.88
1.625
353.61
1.875
403.00
2.125
451.06
 
24
24.000
.218
55.37
 
.250
63.41
.250
63.41
.375
94.62
.562
140.80
.375
94.62
.687
171.20
.968
238.10
.500
125.50
1.218
296.40
1.531
367.40
1.812
429.40
2.062
483.10
2.344
542.13
 
26
26.000
 
 
 
.312
85.60
.500
136.17
 
.375
102.63
 
 
.500
136.17
 
 
 
 
 
 
28
28.000
 
 
 
.312
92.26
.500
146.85
.625
182.73
.375
110.64
 
 
 
 
 
 
 
 
 
30
30.000
.250
79.43
 
.312
98.93
.312
98.93
.500
157.53
.625
196.08
.375
118.65
 
 
.500
157.53
 
 
 
 
 
 
32
32.000
 
 
 
.312
105.59
.500
168.21
.625
209.43
.375
126.66
.688
230.08
 
.500
168.21
 
 
 
 
 
 
34
34.000
 
 
 
.312
112.25
.500
178.89
.625
222.78
.375
134.67
.688
244.77
 
 
 
 
 
 
 
 
36
36.000
 
 
 
.312
118.92
 
.625
236.13
.375
142.68
.750
282.35
 
.500
189.57
 
 
 
 
 
 
Medium Type = Wall thickness in inches
Bold Type = Steel weight per foot in pounds

Stainless Steel 321 / 321H Pipes & Tubes Outside Diameter

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
1/2 0.840 21.3 0.083 2.11 0.68 1.00
3/4 1.050 26.7 0.083 2.11 0.87 1.29
1 1.315 33.4 0.109 2.77 1.41 2.11
1 1/4 1.660 42.2 0.109 2.77 1.82 2.71
1 1/2 1.900 48.3 0.109 2.77 2.1 3.13
2 2.375 60.3 0.109 2.77 2.66 3.96
2 1/2 2.875 73.0 0.120 3.05 3.56 5.29
3 3.500 88.9 0.120 3.05 4.37 6.50
3 1/2 4.000 101.6 0.120 3.05 5.01 7.46
4 4.500 114.3 0.120 3.05 5.66 8.42
5 5.563 141.3 0.134 3.40 7.82 11.64
6 6.625 168.3 0.134 3.40 9.35 13.91
8 8.625 219.1 0.148 3.76 13.50 20.10
10 10.750 273.1 0.165 4.19 18.79 27.96
12 12.750 323.9 0.180 4.57 24.34 36.22
14 14.000 355.6 0.188 4.78 27.97 41.62
16 16.000 406.4 0.188 4.78 32.02 47.65
18 18.000 457.0 0.188 4.78 36.05 53.65
20 20.000 508.0 0.218 5.54 46.42 69.09
22 22.000 559.0 0.218 5.54 51.14 76.10
24 24.000 610.0 0.250 6.35 63.93 95.13
30 30.000 762.0 0.312 7.92 99.60 148.22

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Ready Stock of Stainless Steel 321 / 321H Pipes & Tubes

  • Stainless Steel 321 Bush Hex Pipe
  • SS WERKSTOFF NR. 1.4438 Tubing
  • ASME SA312 TP321H Stainless Steel Round Pipe
  • 321 Stainless Steel Welded Pipe
  • ANSI B16.9 Stainless Steel 321H Superheater Tubes
  • Stainless Steel 321H Heat Ex-changer Tubes
  • 321H SS Tubes Stockist
  • ASTM A312 TP321H EFW Pipes
  • Stainless Steel 321H Industrial Pipes Manufacturer
  • SS 321H Round Pipe
  • Stainless Steel 321 90° Hydraulic Pipes
  • 321H SS Thin Wall Pipe
  • ASTM A312 TP321H Bush Hex Pipe
  • Stainless Steel 321 Seamless Tubes
  • SS 321 Boiler Tube
  • 15 NB SCH 10 SS 321 Cold Drawn Pipes
  • Stainless Steel 321 Beveled End Pipes
  • SS 321 Pipes Supplier
  • Stainless Steel 321 ERW Pipe
  • SS 321H Custom Pipe
  • Stainless Steel 321 Thick Wall Pipe
  • 1.4541 Pipes & Tubes
  • 321H Stainless Steel Square Pipe

  • ANSI B16.9 SS 321H Custom Pipe
  • 321H Stainless Steel Welded Pipes
  • SS 321H Hydraulic Pipe
  • Stainless Steel 321 Capillary Pipe
  • ANSI B16.9 321H Stainless Steel Thick Wall Pipe
  • Stainless Steel 321H Heat Ex-changer Tubes
  • 321H SS Beveled End Pipe Manufacturer
  • Stainless Steel 321H Pipes & Tubes
  • ASTM A312 TP321 Stainless Steel Tubes
  • Stainless Steel 321 Cold Drawn Pipes
  • 321 Stainless Steel Large Pipes
  • ASME SA312 TP321 SS Tubing Stockholder
  • Stainless Steel 321 Hollow Pipes Exporter
  • UNS S32100 Seamless Tubes
  • Stainless Steel 321 LSAW Pipes Ready Stock
  • SS 321 Bush Hex Pipe
  • 321H Stainless Steel Seamless Piping Manufacturer
  • SS 321H Industrial Pipes
  • DIN 1.4438 90° Pipe
  • Stainless Steel 321 Pipes
  • ASME B16.9 SS 321H Welded Tube
  • Stainless Steel 321H Electropolished Pipes
  • SS 321 Seamless Bare Pipe

321 / 321H SS Pipes & Tubes Application Industries

Application Industries

Refineries

90%

Oil and Gas Industry

96%

Power Generation

80%

Pharmaceutical Equipment

85%

Pulp & Paper Industry

88%