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321 Stainless Steel Seamless & ASTM A312 Tp321 ERW pipe

ASME SA 312 TP 321 Welded Pipe & 321h stainless steel pipe Manufacturer in India

We are a large Stainless Steel 321 Pipe Manufacturer and produce this titanium stabilized steel pipes in all sizes and standards. The chromium nickel alloy is stabilized with titanium for optimum use in high temperature environments. The ASTM A312 321 Stainless Steel Seamless Tubing avoids intergranula corrosion by the addition of titanium in it. This in turn reduces the localized corrosion at welded joints.


321 Stainless Steel Pipe

321 Stainless Steel Pipe

SS 321 Seamless Pipe

SS 321 Seamless Pipe

ASME SA 312 TP 321H Tube

ASME SA 312 TP 321H Tube

ASME SA 312 Tp 321h Tube

ASME SA 312 Tp 321h Tube

SUS 321 Capillary Tubing

SUS 321 Capillary Tubing

321h Stainless Steel Pipe

321h Stainless Steel Pipe


Check the sizes and price of AISI 321 ERW Pipe, werkstoff nr. 1.4541 321 SS Pipes

Unlike other similar material, the 321 steel performs well under high temperatures with excellent corrosion resistance and with high strength. The SS 321 Seamless Pipe has precise dimensions. With the higher cost of the material compared to ordinary steel, it is important to have high precision to avoid wastage and irregularities in piping. Our ASME SA 312 Tp 321h Tube components have a higher carbon content which allows them to be machined and formed with ease. We produce the electric resistant welded Tp 321h SsErw Pipes as well. These are good for welding operations and have higher strength because of their making procedure. Great Steel & Metals is a known supplier of all kinds of 321 steel pipes. We offer round, square, hexagon and rectangular pipes as well. There are different standards and pressure classes of these pipes such as the SS Din 1.4541/1.4878 Welded Pipes. The welded pipes are stronger and harder and they perform better in high temperature environments. Our range of UNS S32109 Stainless Steel Tube components is suitable for different application types. You can get a list of our products through inquiry.


Table of contents

AISI321 63.5*3*3165 MM

What Are The Different Types Of 321 Stainless Steel Pipe

ASME SA312 Tp321 Welded Tube

ASME SA312 Tp321 Welded Tube

321 Stainless Steel Boiler tube

321 Stainless Steel Boiler tube

Stainless Steel 321 Heat Exchanger Tube

Stainless Steel 321 Heat Exchanger Tube

Stainless Steel 321 capillary tubing

Stainless Steel 321 capillary tubing

ASTM A312 Tp321 Hot Finished Tube

ASTM A312 Tp321 Hot Finished Tube

Stainless Steel 321 Fabricated Pipe

Stainless Steel 321 Fabricated Pipe

JIS SUS321 Coiled Tubing

JIS SUS321 Coiled Tubing

SA312 321 SS Mechanical tube

SA312 321 SS Mechanical tube

SS 321 Welded Pipe

SS 321 Welded Pipe

Uns S32100 Seamless Pipe

Uns S32100 Seamless Pipe

SS WERKSTOFF NR. 1.4541 Pipe

SS WERKSTOFF NR. 1.4541 Pipe

321 Stainless Steel Round Pipe

321 Stainless Steel Round Pipe

Stainless Steel UNS S32100 Welded Pipe

Stainless Steel UNS S32100 Welded Pipe

ASTM A312 F321 Stainless Steel Round Pipe

ASTM A312 F321 Stainless Steel Round Pipe

Welded Stainless Steel 321 Tubes

Welded Stainless Steel 321 Tubes

Seamless SS 321 Tube

Seamless SS 321 Tube

SS 321 Square Pipe

SS 321 Square Pipe

Din 1.4541 Welded Pipe

Din 1.4541 Welded Pipe

En 1.4541 hot finish pipe

En 1.4541 hot finish pipe

SS 321 Cold Rolled pipe

SS 321 Cold Rolled pipe

Stainless Steel 321 Rectangular Pipe

Stainless Steel 321 Rectangular Pipe

SA 312 Gr 321 Stainless Steel Polished Pipe

SA 312 Gr 321 Stainless Steel Polished Pipe

UNS S32100 Stainless Steel Exhaust Pipe

UNS S32100 Stainless Steel Exhaust Pipe

Stainless Steel DIN 1.4541 Cold Drawn Seamless Pipe

Stainless Steel DIN 1.4541 Cold Drawn Seamless Pipe

Stainless Steel 321 Pipe

Stainless Steel 321 Pipe

Stainless Steel 321 Seamless Pipe

Stainless Steel 321 Seamless Pipe

Stainless Steel 321 ERW Pipe

Stainless Steel 321 ERW Pipe

ASTM A312 Tp321 Pipe

ASTM A312 Tp321 Pipe

Stainless Steel 321 SCH 40 Seamless Pipe

Stainless Steel 321 SCH 40 Seamless Pipe

JIS SUS321 UNS S32100 ERW Pipe

JIS SUS321 UNS S32100 ERW Pipe

ASME SA312 Tp321 Box Pipe

ASME SA312 Tp321 Box Pipe

321 SS Cold Drawn Seamless tube

321 SS Cold Drawn Seamless tube

Stainless Steel Grade 321 ERW Pipe

Stainless Steel Grade 321 ERW Pipe

SS UNS S32100 Hollow Pipe

SS UNS S32100 Hollow Pipe

SAE 321 Stainless Steel Clad Pipe

SAE 321 Stainless Steel Clad Pipe

1.4541 AISI 321 SS Pipe

1.4541 AISI 321 SS Pipe


SS 321 Seamless Tube Specification Chart

View standards & specification of SS 321 Erw Pipe and Grade 321 UNS S32100 Stainless Steel Tubing

Stainless Steel 321 Welded Tube Size 6.35 mm OD To 152 mm OD
Stainless Steel UNS S32100 Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
SS 321 Tube wall thickness 0.020″ –0.220″, (special wall thicknesses available)
SUS 321 Stainless Steel Length Single Random, Double Random, Standard & Cut length Pipe & Tube
American Standard AISI, DIN, EN, GB, IS, JIS, ASTM, ASME Pipe
Sizeof ASTM A312 F321 Stainless Steel Seamless Pipe 4 to 219mm W. T.: 0.5 to 20mm
SAE 321 Stainless Steel Welded Pipe Size Chart 5.0 mm – 1219.2 mm
Stainless Steel 321 Tube Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
321 Stainless Steel End
  • Plain End
  • Beveled End
  • Treaded
AISI 321 Stainless Steel Application Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube
1.4541 AISI 321 SS Value Added Service Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
SS 321 Grade Specialize in
  • 321 SS Heat Exchanger &
  • Stainless Steel 321 Grade Condenser Tube
  • SS 321 Large Diameter Pipe
  • 321 Stainless Steel Capillary Tube
Schedule of Stainless Steel Grade 321 Pipe SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
SS UNS S32100 Seamless Tube Size 3.35 mm OD To 101.6 mm OD
Food Grade 321 Stainless Steel Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Manufacturers of AISI 321 Stainless Steel Pipe
  • Nippon Steel Corporation, Japan
  • Sanyo Special Steel, Japan
  • Kobe Special Tube, Japan
  • Sumitomo Metals, Japan
  • Seah Steel Corporation, Korea
  • Tubacex Tubos Inoxidables S.A., Spain
  • Schoeller Bleckmann, Austria
We can also cut, thread, and groove SUS 321 Stainless Steel Pipe to meet your specifications. Pipe Dimension ANSI/ ASME B36.19, B36.10, B2.1

Tolerances of 321 Stainless Steel Exhaust Tube

NPS ASTM A312 TP321 OD Tolerance
+ –
inch mm inch mm
1/8~1 1 /2
> 1 1 /2~4
> 4~8
> 8~18
> 18~26
> 26~34
> 34~48		 1/64(0.015)
1/32(0.031)
1/16(0.062)
3/32(0.093)
1/8(0.125)
5/32(0.156)
3/16(0.187) 		0.4
0.8
1.6
2.4
3.2
4.0
4.8 		1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031) 		0.8
0.8
0.8
0.8
0.8
0.8
0.8

Chemical Structure of AISI 321 Tubing

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Strength of ASTM A269 Grade Tp 321 Welded Tube

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

321 Stainless Steel Tube Grade Equivalent

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

We Maintain ASME A312 Tp 304 pipe Stock in all Size range

Stainless Steel 321 Tube Ss 321 Seamless Tube
ASME Sa 213 Tp 321 Tube ASME A312 Tp 321 Pipe
Aisi 321 Tubing Astm A249 Tp 321 Tube
Astm A269 Grade Tp 321 Welded Tube Ss 321 Heat Exchanger Tube
321 Stainless Steel Exhaust Tube Sus 321 Capillary Tube
Ss 321 Stainless Coiled Tube Uns S32100 Boiler Tube
1.4541 Cds Tube (Cold Drawn Seamless) Ss 321 Thin Wall Tube

Size Chart of SS 321 Tube

Buy directly from 321 stainless steel Welded pipe Manufacturers in India for exact sizes and low cost
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 Welded Pipe Schedule

NB SIZES SCH 5 SCH 10 SCH 40 SCH 80 SCH 160
1/8″
1/4″
3/8″
1/2″
3/4″
1″
1 1/4″
1 1/2″
2″
2 1/2″
3″
4″
5″
6″

321 Stainless Steel Pipe Dimensions Schedule

Pipe Size
(in)		 Diameter
(in)
mm		 Nominal Thickness
(in)
mm		 Transverse Areas
(in2)
mm2		 Length of Pipe
(ft per sq. foot of surface)		 Volume
(ft3/ft)		 Weight Number of Threads per inch of Screw
External Internal External Internal Steel External Surface
(ft)		 Internal Surface
(ft)		 (lb/ft) (kg/m)
1/8 0.405 0.27 0.07 0.13 0.06 0.07 9.43 14.20 0.0004 0.24 0.36 27
¼ 0.540 0.36 0.09 0.23 0.10 0.13 7.07 10.49 0.0007 0.42 0.63 18
3/8 0.675 0.49 0.09 0.36 0.19 0.17 5.66 7.75 0.0013 0.57 0.84 18
½ 0.840 0.62 0.11 0.55 0.30 0.25 4.55 6.14 0.0021 0.85 1.26 14
¾ 1.050 0.82 0.11 0.87 0.53 0.33 3.64 4.64 0.0037 1.13 1.68 14
1 1.315 1.05 0.13 1.36 0.86 0.49 2.90 3.64 0.0060 1.68 2.50 11 ½
1 ¼ 1.660 1.38 0.14 2.16 1.50 0.67 2.30 2.77 0.0104 2.27 3.38 11 ½
1 ½ 1.900 1.61 0.15 2.84 2.04 0.80 2.01 2.37 0.0141 2.72 4.04 11 ½
2 2.375 2.07 0.15 4.43 3.36 1.08 1.61 1.85 0.0233 3.65 5.43 11 ½
2 ½ 2.875 2.47 0.20 6.49 4.79 1.70 1.33 1.55 0.0333 5.79 8.62 8
3 3.500 3.07 0.22 9.62 7.39 2.23 1.09 1.25 0.0513 7.58 11.27 8
3 ½ 4.000 3.55 0.23 12.56 9.89 2.68 0.95 1.08 0.0687 9.11 13.56 8
4 4.500 4.03 0.24 15.90 12.73 3.17 0.85 0.95 0.0884 10.79 16.06 8
5 5.563 5.05 0.26 24.30 20.00 4.30 0.69 0.76 0.1389 14.61 21.74 8
6 6.625 6.07 0.28 34.47 28.89 5.58 0.58 0.63 0.2006 18.97 28.23 8
8 8.625 7.98 0.32 58.42 50.02 8.40 0.44 0.48 0.3552 28.55 42.49 8
10 10.750 10.02 0.37 90.76 78.85 11.90 0.36 0.38 0.5476 40.48 60.24 8
12 12.750 11.94 0.41 127.64 111.90 15.74 0.30 0.32 0.7763 53.60 79.77 8
14 14.000 13.13 0.44 153.94 135.30 18.64 0.27 0.28 0.9354 63.00 93.75 8
16 16.000 15.00 0.50 201.05 176.70 24.35 0.24 0.25 1.2230 78.00 116.08 8
18 18.000 16.88 0.56 254.85 224.00 30.85 0.21 0.23 1.5550 105.00 156.26 8
20 20.000 18.81 0.59 314.15 278.00 36.15 0.19 0.20 1.9260 123.00 183.05 8
24 24.000 22.63 0.69 452.40 402.10 50.30 0.16 0.17 2.7930 171.00 254.48 8

Thickness Chart of Stainless Steel 321 Erw Pipe

a wide stock of ASTM a312 tp 304 Square tube, SS 304 Seamless Tube & Schedule 40 ASTM A312 UNS S30400 Tubing in our Mumbai warehouse
Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
8″ DN200 8.625 219.1 0.25 6.35 22.36 33.31
10″ DN250 10.75 273.0 0.25 6.35 28.04 41.77
12″ DN300 12.75 323.8 0.25 6.35 33.38 49.73
14″ DN350 14.0 355.6 0.312 7.92 45.61 67.9
16″ DN400 16.0 406.4 0.312 7.92 52.27 77.83
18″ DN450 18.0 457.0 0.312 7.92 58.94 87.71
20″ DN500 20.0 508.0 0.375 9.53 78.6 117.15
22″ DN550 22.0 559.0 0.375 9.53 86.61 129.13
24″ DN600 24.0 610.0 0.375 9.53 94.62 141.12
26″ DN650 26.0 660.0 0.5 12.7 136.17 202.72
28″ DN700 28.0 711.0 0.5 12.7 146.85 218.69
30″ DN750 30.0 762.0 0.5 12.7 157.53 234.67
32″ DN800 32.0 813.0 0.5 12.7 168.21 250.64
34″ DN850 34.0 864.0 0.5 12.7 178.89 266.61
36″ DN900 36.0 914.0 0.5 12.7 189.57 282.27

Schedule 20 321 Stainless Steel Pipe Pressure Rating

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
8 8,625 219,1 0,250 6,35 22,36 33,31
10 10,750 273,0 0,250 6,35 28,04 41,77
12 12,750 323,8 0,250 6,35 33,38 49,73
14 14,000 355,6 0,312 7,92 45,61 67,90
16 16,000 406,4 0,312 7,92 52,27 77,83
18 18,000 457,0 0,312 7,92 58,94 87,71
20 20,000 508,0 0,375 9,53 78,60 117,15
22 22,000 559,0 0,375 9,53 86,61 129,13
24 24,000 610,0 0,375 9,53 94,62 141,12
26 26,000 660,0 0,500 12,70 136,17 202,72
28 28,000 711,0 0,500 12,70 146,85 218,69
30 30,000 762,0 0,500 12,70 157,53 234,67
32 32,000 813,0 0,500 12,70 168,21 250,64
34 34,000 864,0 0,750 19,05 266,33 396,93
36 36,000 914,0 0,500 12,70 189,57 282,27

We offer Special Discount Rates on following AISI 304 Tubing

321 Stainless Steel Round Tube Uns S32100 Round Tube
Ss Grade 321 Instrumentation Tubing Schedule 10 Type 321 Stainless Steel Tube
Schedule 40 Astm A312 Uns S32100 Tubing Uns S32100 Seamless Tubing
Alloy 321 Condenser Tube ASME Sa213 Type 321 Seamless Boiler Tube
Astm A312 Tp 321 Square Tube Ss 321 Mechanical Tube
Ss 321 Superheater Tube Thin Wall Stainless 321 Tubing
Large Diameter 321 Stainless Steel Pipe  

321 stainless steel Exhaust Tube Price List

Stainless Steel Seamless Pipe (Hot Finished) As Per Astm A312 Grade Tp321 Size (273.1mm Od X 23.90mm Thk X 5.5-6.2m Leng

432,001 INR

Stainless Steel Seamless Pipe (Hot Finished) As Per Astm A312 Grade Tp321 Size (273.1mm Od X 23.90mm Thk X 5.5-6.2m Leng

Seamless Stainless Steel Pipes (Hot Finished) (Od Not Less Than 42 Mm) Grade 321

295,339 INR

Seamless Stainless Steel Pipes (Hot Finished) (Od Not Less Than 42 Mm) Grade 321




Seamless Stainless Steel Pipe & Tube Ams 5570 Grade 321 1/4od X .036 Wall 6.35mm Od X 91mm

30,875 INR

Seamless Stainless Steel Pipe & Tube Ams 5570 Grade 321 1/4od X .036 Wall 6.35mm Od X 91mm




Stainless Steel Tube Round - 112101 - Smls Cd 321 8808 5/16 Od X .020 Wa

116,107 INR

Stainless Steel Tube Round - 112101 - Smls Cd 321 8808 5/16 Od X .020 Wa



Stainless Steel Tubes , Seamless Size:20 Mm X 5 Mm 1.4541 (Tp 321) ( 30.500 Mtr)

57,510 INR

Stainless Steel Tubes , Seamless Size:20 Mm X 5 Mm 1.4541 (Tp 321) ( 30.500 Mtr)


Ss 321 Tube As Welded 8x0.5x3550mm(Stainless Steel Tube For The Mfr Of Heating Element)

457,806 INR

Ss 321 Tube As Welded 8x0.5x3550mm(Stainless Steel Tube For The Mfr Of Heating Element)

Ams5570 Grade 321 1 Od X .028 Wall - Seamless Stainless Steel Pipe & Tubes - -295.29 Inches

11,504 INR

Ams5570 Grade 321 1 Od X .028 Wall - Seamless Stainless Steel Pipe & Tubes - -295.29 Inches





Efw Stainless Steel Pipe 36in Pipe Few Ss Astm A358 Gr 321 Cl1 Be 0.688 Inch

105,103 INR

Efw Stainless Steel Pipe 36in Pipe Few Ss Astm A358 Gr 321 Cl1 Be 0.688 Inch






Stainless Steel Seamless Hot Finished Pipes Astm/asme A/sa-312 & En10216-5 Grade Tp321/1.4541 Od.88.9x4.50x5000-5800

81,417 INR

Stainless Steel Seamless Hot Finished Pipes Astm/asme A/sa-312 & En10216-5 Grade Tp321/1.4541 Od.88.9x4.50x5000-5800


AISI 321 Stainless Steel Pipe Stockist distributor of following manufacturers

Jindal Stainless make ASME SA 312 TP 321 Welded Pipe

Jindal Stainless make ASME SA 312 TP 321 Welded Pipe

Sanyo Special Steel make 321h Stainless Steel Pipe

Sanyo Special Steel make 321h Stainless Steel Pipe

Kobe make SS 321 Seamless Pipe

Kobe make SS 321 Seamless Pipe


Nippon Steel & Sumitomo Metal Make ASME SA 312 TP 321H Tube

Nippon Steel & Sumitomo Metal Make ASME SA 312 TP 321H Tube

Schoeller Bleckmann make UNS S32109 Stainless Steel Tube

Schoeller Bleckmann make UNS S32109 Stainless Steel Tube

Salzgitter Mannesmann make Stainless Steel Grade 321 Pipe

Salzgitter Mannesmann make Stainless Steel Grade 321 Pipe