Stainless Steel 304H Pipe Manufacturer, Supplier & Exporter in India — Nishra Overseas

Nishra Overseas is a leading Stainless Steel 304H Pipe manufacturer in India, and a dependable 304H Pipe supplier and exporter in India, serving the petroleum, power generation, boiler, and process industries across domestic and international markets. Whether you are sourcing Stainless Steel 304H Pipe in India for a single project or building a long-term supply arrangement, our stock depth and manufacturing capability are built to support both.

304H is a carbon-enriched variant of the standard 304 austenitic stainless steel family, built around a chromium-nickel-carbon composition. Stainless Steel 304H pipe carries a minimum yield strength of 205 MPa and a minimum tensile strength of 515 MPa, with the ability to elongate up to 40% before failure — properties that make it well suited to demanding fabrication work. Because of its elevated carbon content, 304H retains useful mechanical strength in service temperatures ranging from roughly 500°C to 800°C, well beyond what standard 304 can reliably handle.

Beyond its high-temperature performance, 304H offers strong resistance to corrosion, dependable weldability, and consistent mechanical behavior across a wide range of operating conditions. These qualities make it a preferred material for petroleum refineries, boiler piping, cooling systems, and power generation equipment. As a trusted Stainless Steel 304H Pipe manufacturer, supplier, and exporter in India, Nishra Overseas' goal is straightforward: deliver certified, high-quality 304H pipe and tube at fair, competitive pricing, backed by dependable stock availability.

304H Pipe Specification
Technical Reference Data
Available Product Types
Indicative Pricing
Packaging & Marking
Applications
Stock Range by Product
Manufacturing & Processing Capabilities
Stock Availability
Dimensions & Pressure Ratings
Stainless Steel 304H Pipe Manufacturer, Supplier & Exporter in India
Frequently Asked Questions

304H Pipe Specification

Outside Diameter: 6.00 mm to 914.4 mm, with sizes up to 24" NB held ex-stock.
Wall Thickness Range: 0.3 mm to 50 mm, covering Schedules 5, 10, 40, 80, 80S, 160, XS, and XXS, along with non-standard thicknesses manufactured to order.
Product Forms: Seamless pipe, ERW pipe, welded pipe, fabricated pipe, cold-drawn welded (CDW) tube, and LSAW/seam-welded/redrawn tube.
Shapes: Round, square, rectangular, coiled, "U"-shaped, pancake coils, and hydraulic tubing.
Length Options: Single random, double random, or cut-to-length. Ends can be supplied plain, beveled, or threaded.
Surface Finish: 2B, No.4, No.1, or No.8 mirror polish, or any finish specified by the customer. End protection is provided using plastic caps as standard.
Delivery Condition: Annealed and pickled, polished, bright annealed, or cold drawn.
Documentation: Every consignment can be supported by mill test certificates, EN 10204 3.1 reports, chemical and mechanical test reports, PMI reports, visual and third-party inspection reports, NABL-accredited lab reports, and destructive/non-destructive testing records as required.
Packing: Wooden crates, plastic wrapping, steel strapping, or custom packing per client instruction.

Governing Standards

ASTM A312 / ASME SA312 — Seamless and straight-seam welded austenitic pipe for high-temperature and general corrosive service; no filler metal permitted.
ASTM A358 — Electric fusion welded pipe for corrosive/high-temperature duty, typically up to 8" NB, with filler metal permitted.
ASTM A790 — Seamless and straight-seam welded duplex (ferritic-austenitic) pipe, emphasizing stress corrosion cracking resistance.
ASTM A409 — Straight- or spiral-seam EFW large-diameter light-wall pipe, 14"–30", Sch 5S/10S.
ASTM A376 — Seamless austenitic pipe for high-temperature service.
ASTM A813 / A814 — Welded austenitic pipe for high-temperature and general corrosive applications, including cold-worked variants.

Technical Reference Data

Chemical Composition (%)

Grade	C (max)	Mn (max)	Si (max)	P (max)	S (max)	Cr	Ni	N
304H	0.04–0.10	2.0	0.75	0.045	0.03	18.0–20.0	8.0–10.5	—

Mechanical Properties

Grade	Tensile Strength (min, MPa)	Yield Strength 0.2% Proof (min, MPa)	Elongation (min, %)	Hardness (HRB max)	Hardness (HB max)
304H	515	205	40	92	201

Physical Properties

Grade	Density (kg/m³)	Elastic Modulus (GPa)	Thermal Expansion (µm/m·°C, 0–100°C to 0–538°C)	Thermal Conductivity (W/m·K)	Specific Heat (J/kg·K)	Electrical Resistivity (nΩ·m)
304H	8000	193	17.2 – 18.4	16.2 – 21.5	500	720

Cross-Reference to Other Standards

Grade	UNS	Old British (BS/En)	Euronorm No.	Euronorm Name	Swedish SS	Japanese JIS
304H	S30409	304S11 / 58E	1.4948	X5CrNi18-10	2332	SUS 304H

Governing designations: ASTM A312 / ASME SA312.

Available Product Types

Nishra Overseas maintains stock and production capability across a broad selection of 304H forms:

PVC-filmed 304H pipe and tube
Hot-rolled, high-luster 304H pipe for decorative applications
ASTM 304H welded pipe
Mirror-polished seamless 304H pipe
Bright-finish seamless and welded 304H pipe
304H seamless pipe to ASTM A312
Rectangular 304H pipe, prime quality
Flexible corrugated 304H pipe with insulation layer
Custom-size spiral-welded 304H pipe
Thin-wall, large-diameter 304H tube
Capillary and medical-grade 304H tube
Schedule 40 seamless 304H pipe
Cold-rolled seamless 304H pipe
Sanitary-grade 304H pipe (ASTM A312)
High-precision 304H pipe
Coil tube and embossed/colored-finish 304H pipe

Indicative Pricing

Pricing for SS 304H pipe and tube varies by wall thickness, finish, order volume, and current raw-material rates. As a general market range:

Product Category	Approximate Range
Standard seamless/welded pipe	US $600 – 3,900 / Ton
Thick-wall / capillary / specialty pipe	US $1,000 – 4,000 / Ton or Kg
Mirror-polished / decorative pipe	US $1,000 – 5,000 / Ton
Corrugated / flexible pipe	US $1 – 3.5 / Meter
Piece-rate fittings and small components	US $1 – 80 / Piece

For an accurate, order-specific quotation based on size, schedule, finish, and quantity, please contact our sales team directly.

Packaging & Marking

Standard packaging uses wooden pallets or crates with waterproof paper and plastic wrapping, or seaworthy export packing for larger-diameter pipe, adjusted to match each client's requirements.

Every length of Nishra Overseas 304H pipe is marked along its full length with:

Nominal pipe size (NB)
Schedule / wall thickness
Governing specification and grade
Method of manufacture (seamless or welded)
Heat number
Manufacturer's name or symbol

Test Certification

Manufacturer's Test Certificate
IBR Test Certificate (Form III-D)
Laboratory Test Certificate from a government-approved lab
Third-party inspection certification, with excise gate pass where applicable for Modvat benefit

Applications

SS 304H pipe from Nishra Overseas is used across:

Trailers and transport equipment
Heat exchangers
Food processing equipment
Kitchen benches, sinks, troughs, and appliances
General construction
Threaded fasteners
Chemical containers and transport vessels
Automotive trim
Architectural applications
Railway cars
Woven and welded screens for mining, quarrying, and water filtration

Stock Range by Product

Nishra Overseas stocks the following 304H product families:

Shapes: Square pipe · Round pipe · Rectangular pipe
Finishes: Colour-coated pipe · Ornamental tube · Electropolished pipe
Specialty Profiles: Slot round pipe · Triangular tube · Hexagonal tube
Fabricated Forms: Handrail tube · U-shaped tube · Thin-wall seamless tube
Precision Products: Inner/outer polished pipe · Capillary tube · Seamless tube
Standards-Referenced Products: AISI 304H seamless pipe · AISI 304H welded pipe · SUS 304H seamless pipe · AISI 304H ERW pipe · UNS S30409 pipe · DIN 1.4948 pipe

Manufacturing & Processing Capabilities

Structural Cutting — Pipe, tube, tubing, and square/rectangular/round sections cut from 1/16" up to 28" diameter.
Tubular Cutting — Ornamental tube, tubing, and hollow bar, in the same 1/16"–28" diameter range.
Production Cutting — Precision cutting for diameters up to 4", carried out on Amada production equipment for tight-tolerance work.
Structural Polishing — OD and ID polishing available across the full tubular product range.

Stock Availability

Product Form	OD Range	Wall Thickness Range
General pipe stock	6 mm – 630 mm	0.5 mm – 30 mm
Round pipe (large size)	12.7 mm – 300 mm	0.5 mm – 30 mm
Rectangular pipe	10×20 mm – 100×200 mm	0.5 mm – 30 mm
Standard tube	6 mm – 630 mm	0.5 mm – 30 mm
Polished tube	12.7 mm – 250 mm	0.5 mm – 30 mm
Precision tube	16 mm – 85 mm	0.5 mm – 3.0 mm
Capillary tube	13 mm – 85 mm	0.5 mm – 2.0 mm
Instrumentation tube	20 mm – 200 mm	0.5 mm – 2.0 mm
Fine-bore tube	22×0.7 mm – 108×2.0 mm	0.5 mm – 2.0 mm
Hydraulic tube	12.5 mm – 203.2 mm	1.0 mm – 5 mm
Thin-wall tube	0.28 mm – 10 mm	0.08 mm – 1.2 mm
Cold-drawn tube	6 mm – 430 mm	0.8 mm – 30 mm

Schedule Availability by Nominal Bore

NB Size	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/8"–3/8"	✓	✓	✓	✓	—
1/2"–4"	✓	✓	✓	✓	✓
5"	✓	✓	✓	✓	—
6"	✓	✓	✓	✓	✓

Dimensions & Pressure Ratings

SS 304H Pressure Rating by Schedule and Temperature (psi)

Pipe Size	Schedule	100°F	200°F	300°F	400°F	500°F	600°F	650°F	700°F	750°F
1"	40	3048	2629	2362	2171	2019	1924	1867	1824	1810
1"	80	4213	3634	3265	3002	2791	2659	2580	2528	2501
1"	160	6140	5296	4759	4375	4068	3876	3761	3684	3646
1.5"	40	2257	1947	1750	1608	1496	1425	1383	1354	1340
1.5"	80	3182	2744	2466	2267	2108	2009	1949	1909	1889
1.5"	160	4619	3984	3580	3291	3060	2916	2829	2772	2743
2"	40	1902	1640	1474	1355	1260	1201	1165	1141	1129
2"	80	2747	2369	2129	1957	1820	1734	1682	1648	1631
2"	160	4499	3880	3486	3205	2980	2840	2755	2699	2671
3"	40	1806	1558	1400	1287	1196	1140	1106	1084	1072
3"	80	2553	2202	1979	1819	1691	1612	1564	1532	1516
3"	160	3840	3312	2976	2736	2544	2424	2352	2304	2280
4"	40	1531	1321	1187	1091	1014	967	938	919	909
4"	80	2213	1909	1715	1577	1466	1397	1355	1328	1314
4"	160	3601	3106	2791	2566	2386	2273	2206	2161	2138
5"	40	1342	1158	1040	956	889	847	822	805	797
5"	80	1981	1709	1535	1411	1312	1250	1213	1189	1176
5"	160	3414	2945	2646	2433	2262	2155	2091	2049	2027
6"	40	1219	1052	945	869	808	770	747	732	724
6"	80	1913	1650	1483	1363	1267	1208	1172	1148	1136
6"	160	3289	2836	2549	2343	2179	2076	2014	1973	1953
8"	40	1073	926	832	765	711	678	657	644	637
8"	80	1692	1459	1311	1205	1121	1068	1036	1015	1005
8"	160	3175	2738	2460	2262	2103	2004	1944	1905	1885
10"	40	974	840	755	694	645	615	596	584	578
10"	80	1609	1388	1247	1147	1066	1016	986	966	956
10"	160	3147	2714	2439	2242	2085	1986	1927	1880	1868

Note: values above are indicative allowable pressures per common SS 304H reference tables and should be verified against project-specific engineering data before use in design calculations.

Stainless Steel 304H Pipe Manufacturer, Supplier & Exporter in India

Nishra Overseas is a manufacturer, stockist, supplier, and exporter of SS 304H seamless and welded pipes, tubes, and fittings, supplying process industries, EPC contractors, and trading partners across India and abroad. Whatever stage of the supply chain you're sourcing from, Nishra Overseas covers it end to end.

Stainless Steel 304H Pipe Manufacturer in India

As a Stainless Steel 304H Pipe manufacturer in India, Nishra Overseas produces seamless and welded 304H pipe to ASTM A312 / ASME SA312 and related standards, with non-standard diameters, wall thicknesses, lengths, and end finishes made to drawing or specification on request. Every batch is traceable to a heat number, with mill test certificates, EN 10204 3.1 documentation, and third-party inspection available wherever the order calls for it.

Stainless Steel 304H Pipe Supplier in India

As a Stainless Steel 304H Pipe supplier in India, Nishra Overseas holds ready inventory across common and non-standard sizes out of our warehouse, so smaller or urgent orders can be fulfilled without waiting on a fresh production run. Our technical team helps match pipe schedule, wall thickness, and surface finish to your specific pressure, temperature, and corrosion requirements before you place an order — so what you receive is right the first time.

Stainless Steel 304H Pipe Exporter in India

As a Stainless Steel 304H Pipe exporter in India, Nishra Overseas packs every export consignment to seaworthy standard, with documentation prepared in advance for customs clearance in the destination market. We regularly ship 304H pipe and tube to buyers across the Middle East, Southeast Asia, Africa, and Europe, alongside our domestic supply base.

Industries served: Petroleum refining, power generation, boiler and heat exchanger manufacturing, food and beverage processing, architectural and railway fabrication, and water/mining filtration systems.

Get a quote: Share your required size, schedule, length, and quantity, and the Nishra Overseas team — your Stainless Steel 304H Pipe manufacturer, supplier, and exporter in India — will respond with current pricing, lead time, and available certification for your order.

Frequently Asked Questions

Who is a reliable Stainless Steel 304H Pipe manufacturer in India?

Nishra Overseas manufactures Stainless Steel 304H pipe to ASTM A312 / ASME SA312 in seamless and welded forms, with mill test certificates and third-party inspection available on request.
Where can I find a Stainless Steel 304H Pipe supplier in India with ex-stock availability?

Nishra Overseas stocks 304H pipe from 6 mm up to 914.4 mm OD across common schedules, so standard sizes are typically available ex-stock without a production wait.
Does Nishra Overseas export Stainless Steel 304H Pipe outside India?

Yes. As a Stainless Steel 304H Pipe exporter in India, Nishra Overseas packs consignments to seaworthy export standard and prepares documentation for customs clearance in the buyer's country.
What standards govern Stainless Steel 304H Pipe in India?

304H pipe is most commonly supplied to ASTM A312 / ASME SA312, with related specifications including ASTM A358, A790, A409, A376, A813, and A814 depending on the application.
What sizes of Stainless Steel 304H Pipe are available in India?

Nishra Overseas supplies 304H pipe from 6 mm OD up to 914.4 mm OD, wall thickness 0.3 mm to 50 mm, across Schedules 5 through 160, plus non-standard sizes made to order.