ASTM A312 Stainless Steel 321 Seamless Pipe and Tubing

ASTM A213 UNS S32100 Welded and ERW Tubes Manufacturer & Supplier


We manufacture Stainless Steel Seamless pipes in ERW, welded, and many other variants as per the requirement occur. The Stainless Steel 321 Seamless Pipe is of SS 321 grade and comes with titanium percentage around 5 times carbon content helping in low carbide precipitation. The SS 321 Welded pipes are welded pipes manufactured with a flat sheet of stainless steel joined with heat the ends. This leaves a joint in the pipes and tubes of welded design. Another variant is 321/321H Stainless steel round pipe manufactured with a composition of 9-12% of Nickel, 17-19% of chromium, Carbon is 0.15% and titanium is 0.80%. The SS 321 ERW tubes hold the same composition but are manufacture by employing the Electric Resistance Welded method (ERW) method. In this process electric current passes through a cold forming strip of stainless steel and then joined with pressure.

The UNS S32100 U tube conforms to the Unified Numbering System (UNS) with U-shaped to meet the specific requirements. Another variant is the UNS S32100 schedule 40 Pipe which conforms to the same standards, however, schedule 40 signifies the wall thickness of 0.154” and 1-inch pipe size.

The ASTM A312 TP 321 ERW pipes conforms to the American Society for Testing and Materials standards. The higher titanium composition leads to lower carbide precipitation and increasing corrosion resistance. Another variant of stainless steel pipe is DIN 1.4541 Rectangular pipe which also comes in square, round, hexagonal shapes, conforms to German Institute of Standardization (DIN) standards with better strength and reliability. The WERKSTOFF NR.1.4541 Heat exchanger Tube is optimum for boiler and other high heat bearing industries with a temperature tolerance of 1600-1650 Fahrenheit. We offer you several ranges of stainless steel pipes according to your specific requirements.


Stainless Steel 321 Seamless Pipe
Stainless Steel 321 Seamless Pipe
SS 321H Capillary Tube
SS 321H Capillary Tube
321 Stainless Steel Round Pipe
321 Stainless Steel Round Pipe

 

DIN 1.4541 Square/ Rectangular Pipe stockist in India, Stock of SS 321 Tubing in all shapes, Sizes, thickness and Length

 

Specification List of Stainless Steel 321 / 321H Seamless Pipe

ASTM / ASME Standards
  • ASTM A269 / ASME SA269
  • ASTM A249 / ASME SA249
  • ASTM A213 / ASME SA213
  • ASTM A270 / ASME SA270
  • ASTM A554 / ASME SA554
  • ASTM A312 / ASME SA312
  • ASTM A358 / ASME SA358
EFW Pipe size 5.0 mm - 1219.2 mm
Specialized in Large Diameter Pipe
Pipe Schedule SCH5, SCH10, SCH40, STD, SCH80, SCH160
Pipe Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Pipe Form Round, Square, Hollow, Rectangular, Hydraulic, Straight Pipes Etc.
Pipe Length Single Random, Double Random & Cut Length.
End Plain End, Beveled End, Treaded.
Marking All Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Material Test Certificates (MTC) Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
Welded Tube Size 6.35 mm OD To 152 mm OD
Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
tubing wall thickness 0.020" –0.220", (special wall thicknesses available)
tube Length Single Random, Double Random, Standard & Cut length
Tube Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
tube Form Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc.
Tube Type Seamless, ERW, EFW, Welded, Fabricated
End Plain End, Beveled End, Treaded
Marking All tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Application Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger

Various Types of ASME SA312 TP 321 / 321H Pipe

Stainless Steel 321 Cold Drawn Pipes

Stainless Steel 321 Cold Drawn Pipes

ASME SA312 Tp 321 Exhaust Pipe

ASME SA312 Tp 321 Exhaust Pipe

SS A312 Tp321h Erw Pipe

SS A312 Tp321h Erw Pipe

Stainless Steel 1.4541 Electropolished Pipe

Stainless Steel 1.4541 Electropolished Pipe

321h Stainless Steel High Pressure Tube

321h Stainless Steel High Pressure Tube

ASTM A249 Tp 321h Thin Wall Tubing

ASTM A249 Tp 321h Thin Wall Tubing

ASME SA249 Tp 321 Efw Tube

ASME SA249 Tp 321 Efw Tube

Stainless Steel 321 Tubing

Stainless Steel 321 Tubing

 

Compare our ASTM A249 TP321 schedule 40 pipe Price list ex Mumbai and 321H Cold Rolled Coiled Tubing price per Kg in India

 

Chemical Structure of 321 / 321H SS Seamless Tube

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 Behaviour of SS 321 / 321H Weled Pipe

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 %

 

ASTM A213 TP321 Instrumentation Tubes for sale in all sizes at Best price with third party inspection, SS 321 Welded Pipe in accordance to International standard

 

Equivalent of UNS S32100 Pipes

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

SS 321 / 321H Tubing Physical Properties

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

View Price List of 321 / 321H SS Pipe

Price list of Stainless Steel 321 Pipe/ Tube ASTM A312 TP 321H Pipe/ Tube Price in INR ASTM A312 TP 321 Pipe/ Tube Price in USD ASTM A312 TP 321H Pipe/ Tube Price in UAE Dirham
Sch 40 321 SS Pipe INR 421 4.53 USD 21.72 UAE Dirham
S.S. Tube (GR. 321H) SIZE: 2 X 2 INR 16,591 $218.82 803.73 UAE Dirham

Dimensions of Stainless Steel 321 / 321H Pipe

PIPE SCHEDULES WALL THICKNESS (Inches)
Nominal
O.D. Inches
10s
10
40s & Std
40
80s & E.H.
80
160
1/8
.405
.049
.049
.068
.068
.095
.095
1/4
.540
.065
.065
.088
.088
.119
.119
3/8
.675
.065
.065
.091
.091
.126
.126
1/2
.840
.083
.083
.109
.109
.147
.147
.187
3/4
1.050
.083
.083
.113
.113
.154
.154
.218
1
1.315
.109
.109
.133
.133
.179
.179
.250
1 1/4
1.660
.109
.109
.140
.140
.191
.191
.250
1 1/2
1.900
.109
.109
.145
.145
.200
.200
.281
2
2.375
.109
.109
.154
.154
.218
.218
.343
2 1/2
2.875
.120
.120
.203
.203
.276
.276
.375
3
3.500
.120
.120
.216
.216
.300
.300
.437
3 1/2
4.000
.120
.120
.226
.226
.318
.318
4
4.500
.120
.120
.237
.237
.337
.337
.531
4 1/2
5.000
.247
.355
5
5.563
.134
.134
.258
.258
.375
.375
.625
6
6.625
.134
.134
.280
.280
.432
.432
.718
7
7.625
.301
.500
8
8.625
.148
.148
.322
.322
.500
.500
.906
9
9.625
.342
.500
10
10.750
.165
.165
.365
.365
.500
.593
1.125
11
11.750
.375
.500
12
12.750
.180
.180
.375
.406
.500
.687
1.312
14
14.000
.188
.250
.375
.437
.500
.750
1.406
16
16.000
.188
.250
.375
.500
.500
.843
1.593
18
18.000
.188
.250
.375
.562
.500
.937
1.781

 

Custom Sizes in ASME SA 312 Grade 321H ERW Pipe also pay only for required length of UNS S32100 Straight Tubo / Coiled tubing/ Annealed Tube/ Square Tube

 

ASTM A249 TP 321 / 321H Tubing Pressure Rating

Pressure Rating (psig)
Pipe Size
(inches)
Pipe Schedule Temperature (oF)
100 200 300 400 500 600 650 700 750
1" 160 6140 5296 4759 4375 4068 3876 3761 3684 3646
80 4213 3634 3265 3002 2791 2659 2580 2528 2501
40 3048 2629 2362 2171 2019 1924 1867 1824 1810
1 1/2" 160 4619 3984 3580 3291 3060 2916 2829 2772 2743
80 3182 2744 2466 2267 2108 2009 1949 1909 1889
40 2257 1947 1750 1608 1496 1425 1383 1354 1340
2" 160 4499 3880 3486 3205 2980 2840 2755 2699 2671
80 2747 2369 2129 1957 1820 1734 1682 1648 1631
40 1902 1640 1474 1355 1260 1201 1165 1141 1129
3" 160 3840 3312 2976 2736 2544 2424 2352 2304 2280
80 2553 2202 1979 1819 1691 1612 1564 1532 1516
40 1806 1558 1400 1287 1196 1140 1106 1084 1072
4" 160 3601 3106 2791 2566 2386 2273 2206 2161 2138
80 2213 1909 1715 1577 1466 1397 1355 1328 1314
40 1531 1321 1187 1091 1014 967 938 919 909
5" 160 3414 2945 2646 2433 2262 2155 2091 2049 2027
80 1981 1709 1535 1411 1312 1250 1213 1189 1176
40 1342 1158 1040 956 889 847 822 805 797
6" 160 3289 2836 2549 2343 2179 2076 2014 1973 1953
80 1913 1650 1483 1363 1267 1208 1172 1148 1136
40 1219 1052 945 869 808 770 747 732 724
8" 160 3175 2738 2460 2262 2103 2004 1944 1905 1885
80 1692 1459 1311 1205 1121 1068 1036 1015 1005
40 1073 926 832 765 711 678 657 644 637
10" 160 3147 2714 2439 2242 2085 1986 1927 1880 1868
80 1609 1388 1247 1147 1066 1016 986 966 956
40 974 840 755 694 645 615 596 584 578