Stainless Steel 321H Pipe
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SS 321H Seamless Pipe Manufacturer, Supplier & Exporter in India
Nishra Overseas is a leading manufacturer, supplier and exporter of Stainless Steel 321H Pipe in India. 321H is an alloy stabilized with the help of titanium and carries a controlled higher carbon content than standard 321, giving it increased creep resistance and strength at carbide precipitation temperatures that other grades cannot withstand. The Stainless Steel 321H Pipe/Tube is an austenitic steel designed to work continuously at temperatures ranging from 800–1500°F, with a carbon concentration of 0.04–0.10%.
As a trusted 321H Pipe manufacturer, our SS 321H Stainless Steel Tube is produced with an outer diameter of 6mm–250mm and thickness ranging from 0.3mm–50mm, and is available in a variety of grades and finishes. The Stainless Steel 1.4878 Tubing we manufacture and supply is widely used in petroleum refineries, boiler tubes, high-pressure steam pipes, heavy-duty exhausts, manifolds, and more. We are the leading manufacturer, supplier, stockist and exporter of Stainless Steel 321H Pipe/Tube in India, exporting to 50+ countries while producing the best quality products in the market at the most reasonable rates.
Stainless Steel 321H Pipe — Product Range
As a full-scale manufacturer and exporter, our 321H pipes can be produced either seamlessly or through welding procedures.
- SS 321H Seamless Pipe — produced from a single piece of steel, tensile strength above 515 MPa and yield strength above 205 MPa
- 321H SS Welded Pipe — free from post-weld carburization or corrosion in this grade; strong, durable and low-maintenance
- UNS S32109 ERW Pipe — produced through fusion welding, elongates up to 40% while retaining excellent performance and strength
- AISI 321H Schedule 40 Pipe — highly ductile with excellent low-temperature toughness, easily welded through most standard processes
- SS Grade 1.4878 Polished Pipe — cold-rolled and polished for a smooth surface with added corrosion resistance
- DIN 1.4878 Stainless Steel Round Pipe — standard product line for supplying fluids and gases
- SA312 TP321H Square Pipe — cannot be hardened by hot-rolling; used to provide support and structural integrity
- ASTM A312 Gr.TP 321H Rectangular Pipe — used in aerospace and storage applications for its strength and hardness
All forms above can be manufactured and exported in different shapes and sizes as per your requirement. As one of India's leading 321H Pipe manufacturers, suppliers and exporters, contact us for more information on our ASTM A312 TP321H range.
Nishra Overseas — 321H SS Welded Pipe manufacturer & Stainless Steel 1.4878 Tubing supplier in Mumbai, exporting ASTM A312 TP321H Pipe worldwide as per ISO/EN standards
Table of Contents
- Specification of Stainless Steel 321H Pipe
- 321H Stainless Steel Pipe Weight Chart
- Dimension Table of SA312 TP321H Square Pipe
- AISI 321H Schedule 40 Pipe Pressure Rating
- 321H Stainless Steel Tube Chemical Element
- Mechanical Properties of SS 321H Seamless Pipe
- UNS S32109 ERW Pipe Equivalent
- Why Nishra Overseas — Manufacturer, Supplier & Exporter
Specification of Stainless Steel 321H Pipe
Manufacturer, supplier and exporter of SA312 TP321H Square Pipe and 321H Stainless Steel Tube in various thicknesses, gauges and dimensions, from Mumbai, India
|
Specification |
Details |
|
International Standard |
ASTM A312 / ASME SA312 Grade TP321H |
|
Seamless Pipe Size |
OD 4mm – 219mm; WT 0.5mm – 20mm |
|
Welded Pipe Size |
OD 5.0mm – 1219.2mm |
|
EFW Pipe Size |
OD 5.0mm – 1219.2mm |
|
Wall Thickness (Schedule) |
SCH 5, 10, 40, 80, 160, 80S, XS, XXS |
|
Techniques |
EFW / Seamless / ERW / Welded / LSAW / Fabricated / Seam-Welded / CDW / Redrawn |
|
Form |
Round, Square, Rectangular |
|
Length |
Single Random, Double Random, Required Length, Plain End, Threaded, Beveled End |
|
Condition |
Hot Finished, Annealed & Pickled, Bright Annealed, Polished, Cold Drawn |
321H Stainless Steel Pipe Weight Chart
|
NB (inch) |
OD (mm) |
Schedule |
WT (mm) |
Weight (kg/m) |
Weight (lbs/ft) |
|
1/2" |
21.3 |
40 STD |
2.77 |
1.27 |
0.85 |
|
1/2" |
21.3 |
80 STD |
3.73 |
1.62 |
1.09 |
|
3/4" |
26.7 |
40 STD |
2.87 |
1.68 |
1.13 |
|
1" |
33.4 |
40 STD |
3.38 |
2.50 |
1.68 |
|
1 1/2" |
48.3 |
40 STD |
3.68 |
4.05 |
2.72 |
|
2" |
60.3 |
40 STD |
3.91 |
5.44 |
3.65 |
|
3" |
88.9 |
40 STD |
5.49 |
11.28 |
7.58 |
|
4" |
114.3 |
STD |
6.02 |
16.07 |
10.79 |
|
6" |
168.3 |
40 STD |
7.11 |
18.97 |
12.74 |
|
8" |
219.1 |
40 |
8.18 |
28.55 |
19.18 |
|
10" |
273.0 |
40 STD |
9.27 |
40.48 |
27.19 |
|
12" |
323.8 |
– |
9.53 |
49.56 |
33.29 |
|
16" |
406.4 |
STD |
9.53 |
62.58 |
42.05 |
|
20" |
508.0 |
STD |
9.53 |
78.60 |
52.81 |
|
24" |
610.0 |
STD |
9.53 |
94.62 |
63.59 |
Dimension Table of SA312 TP321H Square Pipe
|
Nominal Size (in) |
OD (in) |
OD (mm) |
WT (in) |
WT (mm) |
Weight (kg/m) |
Weight (lbs/ft) |
|
1/2 |
0.84 |
21.3 |
0.109 |
2.77 |
1.27 |
0.85 |
|
3/4 |
1.05 |
26.7 |
0.113 |
2.87 |
1.69 |
1.13 |
|
1 |
1.32 |
33.4 |
0.133 |
3.38 |
2.5 |
1.68 |
|
1 1/2 |
1.90 |
48.3 |
0.145 |
3.68 |
4.05 |
2.72 |
|
2 |
2.375 |
60.3 |
0.154 |
3.91 |
5.44 |
3.65 |
|
3 |
3.500 |
88.9 |
0.216 |
5.49 |
11.29 |
7.58 |
|
4 |
4.500 |
114.3 |
0.237 |
6.02 |
16.07 |
10.79 |
|
6 |
6.625 |
168.3 |
0.28 |
7.11 |
28.26 |
18.97 |
|
8 |
8.625 |
219.1 |
0.322 |
8.18 |
42.55 |
28.55 |
|
10 |
10.75 |
273.0 |
0.365 |
9.27 |
60.31 |
40.48 |
|
12 |
12.75 |
323.8 |
0.406 |
10.31 |
79.73 |
53.52 |
|
16 |
16.00 |
406.4 |
0.500 |
12.70 |
123.30 |
82.77 |
|
20 |
20.00 |
508.0 |
0.594 |
15.09 |
183.42 |
123.11 |
|
24 |
24.00 |
610.0 |
0.688 |
17.48 |
255.41 |
171.29 |
AISI 321H Schedule 40 Pipe Pressure Rating
Nishra Overseas — Polished 321H Stainless Steel Pipe manufacturer & supplier in India, stocking SS Grade 1.4878 Pipe, Heat Exchanger & Boiler Tubes for export from Mumbai
Allowable stress (psi) by temperature:
|
Pipe Size |
Sch. |
OD (in) |
WT (in) |
100°F |
300°F |
500°F |
600°F |
700°F |
750°F |
|
1" |
40 |
1.315 |
0.133 |
2205 |
2205 |
1902 |
1783 |
1703 |
1664 |
|
1" |
80 |
1.315 |
0.179 |
3061 |
3061 |
2640 |
2475 |
2365 |
2310 |
|
2" |
40 |
2.375 |
0.154 |
1371 |
1371 |
1182 |
1108 |
1059 |
1034 |
|
2" |
80 |
2.375 |
0.218 |
1985 |
1985 |
1712 |
1605 |
1534 |
1498 |
|
3" |
40 |
3.500 |
0.216 |
1301 |
1301 |
1122 |
1052 |
1005 |
982 |
|
4" |
40 |
4.500 |
0.237 |
1102 |
1102 |
950 |
891 |
851 |
831 |
|
6" |
40 |
6.625 |
0.280 |
877 |
877 |
756 |
709 |
677 |
661 |
|
8" |
40 |
8.625 |
0.322 |
771 |
771 |
665 |
623 |
596 |
582 |
|
10" |
40 |
10.750 |
0.365 |
699 |
699 |
603 |
565 |
540 |
528 |
321H Stainless Steel Tube Chemical Element
|
Element |
Composition (%) |
|
Carbon (C) |
0.04 – 0.08 |
|
Silicon (Si) |
0.75 max |
|
Manganese (Mn) |
2.00 max |
|
Phosphorus (P) |
0.045 max |
|
Sulphur (S) |
0.03 max |
|
Chromium (Cr) |
17 – 19 |
|
Nickel (Ni) |
9 – 12 |
|
Nitrogen (N) |
0.10 max |
|
Titanium (Ti) |
0.70 max |
|
Iron (Fe) |
Balance |
Mechanical Properties of SS 321H Seamless Pipe
Manufacturer and exporter of high performance ASTM A312 Gr.TP321H Rectangular Pipe & Schedule 40 DIN 1.4878 Stainless Steel Round Pipe at factory price from Mumbai, India
|
Property |
Value |
|
Tensile Strength |
515 MPa (min) |
|
Yield Strength |
205 MPa (min) |
|
Elongation |
40% (min) |
|
Hardness (Rockwell) |
95 HRB (max) |
|
Hardness (Brinell) |
217 HB (max) |
|
Service Temperature |
800°F – 1500°F |
UNS S32109 ERW Pipe Equivalent
|
Material |
Werkstoff Nr. (German) |
UNS No. (USA) |
|
SS 321H |
1.4878 |
S32109 |
Applications of SS 321H Pipe
- Petroleum refineries and process piping
- Boiler tubes and high-pressure steam pipes
- Heavy-duty exhaust systems and manifolds
- Power generation plants
- Aerospace structural components
- Heat exchangers operating in the carbide-precipitation range
Why Nishra Overseas — 321H Pipe Manufacturer, Supplier & Exporter in India {#why-choose-us}
Nishra Overseas LLP is a Mumbai-based manufacturer, supplier, stockist and exporter of Stainless Steel 321H Pipe and Tube, backed by ISO 9001:2015 certification.
- As a Manufacturer — in-house cold drawing, annealing, pickling and polishing to ASTM A312/ASME SA312 TP321H specification
- As a Supplier — ready stock of seamless, welded and ERW 321H pipe held in Mumbai across common schedules for fast delivery without mill lead times
- As an Exporter — shipments to 50+ countries with full mill test certificates (EN 10204 3.1/3.2), third-party inspection (SGS/BV/TUV), and export-grade packing