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EN 10204 3.1 & 3.2 MTC
Every heat traceable with independent lab reports
ASTM A312 / ASME SA312 TP304L
Equivalent to UNS S30403 • DIN 1.4306/1.4307
Seamless, ERW & EFW
Round, square, rectangular & hollow sections
Up To 800°C (Intermittent)
Low carbon content resists weld-decay corrosion
1/2″ – 24″ NB
Custom cut lengths, no minimum order quantity
18Cr – 10Ni – 0.03C Max
Low-carbon variant of Grade 304, UNS S30403
Quote In 48 Hours
Fast turnaround on 304L pipe enquiries
Dual-Code Certified
Every heat verified to ASTM A312 & ASME SA312 TP304L
Ex-Stock Pricing
Direct stockist rates, no middleman markup
Global Export Experience
Regular shipments to Africa, the Americas & the Caucasus
Cut & Polish To Size
Custom lengths, ends & surface finish on request
PED 2014/68/EU
Alongside SGS, TUV & Lloyd’s approvals
📋 Table of Contents
Stainless Steel 304L Pipe is a low-carbon variant of Grade 304, containing 0.03% carbon maximum, and is manufactured in line with ASTM A312 / ASME SA312 TP304L specifications. This grade carries multiple international designations, including UNS S30403, DIN 1.4306/1.4307, JIS SUS 304L, and GOST 03Х18Н11. Aesteiron Steels LLP maintains ready stock of AISI 304L pipe in seamless, ERW, and EFW variants, available in round, square, and rectangular profiles, with cutting, beveling, and dispatch handled within 48 hours of order confirmation.
The controlled carbon content in INOX 304L pipe limits chromium-carbide formation along weld seams, allowing it to retain strong intergranular corrosion resistance even without post-weld heat treatment. This property makes SS 304L Pipe a go-to material for pharmaceutical equipment, food-grade piping, chemical storage units, and structural applications involving frequent welding. Each batch is fully traceable and supplied with EN 10204 3.1/3.2 certification, with PED 2014/68/EU compliance available where the application demands it.
Complete dimensional and metallurgical requirements for ASTM A312 TP304L pipe, broken down card by card.
Working pressure ratings by pipe O.D. and wall thickness for ASTM A312 TP304L pipe – confirm exact figures against ASME B31.3 for your project code.
| Pipe O.D. (in.) | Wall Thickness (in.) | Working Pressure (psig) |
|---|---|---|
| 3/4 | .095 | 4600 |
| 1 | .109 | 3400 |
| 1/4 | .028 | 3700 |
| 1/2 | .065 | 4400 |
| 1 | .120 | 4300 |
| 5/16 | .049 | 5400 |
| 1/8 | .035 | 10100 |
| 3/8 | .049 | 4400 |
| 1 | .095 | 2900 |
| 1/4 | .049 | 7000 |
| 3/4 | .065 | 3000 |
| 1/2 | .049 | 3200 |
| 5/16 | .065 | 7300 |
| 1 | .083 | 2200 |
| 3/8 | .035 | 3100 |
| 1/8 | .028 | 7900 |
| 3/4 | .083 | 4000 |
| 1/2 | .035 | 2300 |
| 1 | .065 | 2200 |
| 1/4 | .065 | 9500 |
| 5/16 | .035 | 3700 |
| 3/8 | .065 | 6100 |
| 1 | .120 | 3900 |
Stainless Steel 304L Pipe is available in the following construction types to suit different applications.
Every certified length carries clear stencil and stamp details for easy identification on-site.
Mill name and country of manufacture
OD, wall thickness & schedule stencilled
For full mill traceability
ASTM A312 TP304L, UNS S30403
Stainless Steel 304L Pipe Stockist in Mumbai we repackage stock before every local dispatch to avoid transit damage
Corrosion inhibitors for long transit routes
Sea-worthy crates or steel-strapped bundles
Bore and thread protection during transit
Polish-grade pipe wrapped in protective film
As a reputed Stainless Steel 304L Pipe Exporter we supply pipes from Schedule 5S to Schedule 80S on request
| Nominal Size (IPS) | Outside Diameter | Schedules Available |
|---|---|---|
| 10″ | 10.750″ O.D. | SCH 10, 20, 40 (.500), TRUE 80 (.500) |
| 3/4″ | 1.050″ O.D. | SCH 10, 40, 80, 160, XXH |
| 14″ | 14.000″ O.D. | SCH10 (.188), SCH40 (.375) |
| 1/8″ | .405″ O.D. | SCH 40, 80 |
| 5″ | 5.563″ O.D. | SCH 10, 40, 80, 160, XXH |
| 2″ | 2.375″ O.D. | SCH 10, 40, 80, 160, XXH |
| 18″ | 18.000″ O.D. | SCH-40 (.375) |
| 1-1/4″ | 1.660″ O.D. | SCH 10, 40, 80, 160, XXH |
| 6″ | 6.625″ O.D. | SCH 5, 10, 40, 80, 120, 160, XXH |
| 3/8″ | .675″ O.D. | SCH 10, 40, 80 |
| 12″ | 12.750″ O.D. | SCH 10, 20, 40 (.375), TRUE 40 (.406), SCH 80 (.500) |
| 3″ | 3.500″ O.D. | SCH 5, 10, 40, 80, 160, XXH |
| 1/4″ | .540″ O.D. | SCH 10, 40, 80 |
| 16″ | 16.000″ O.D. | SCH10 (.188), SCH40 (.375) |
| 1-1/2″ | 1.900″ O.D. | SCH 10, 40, 80, 160, XXH |
| 8″ | 8.625″ O.D. | SCH 5, 10, 40, 80, 120, 160, XXH |
| 1/2″ | .840″ O.D. | SCH 5, 10, 40, 80, 160, XXH |
| 1″ | 1.315″ O.D. | SCH 5, 10, 40, 80, 160, XXH |
| 2-1/2″ | 2.875″ O.D. | SCH 10, 40, 80, 160, XXH |
| 4″ | 4.500″ O.D. | SCH 10, 40, 80, 160, XXH |
| 3-1/2″ | 4.000″ O.D. | SCH 10, 40, 80, 160, XXH |
Here's the standard chemical composition of 304L Stainless Steel Pipes.
| Grade | C % (max) | Mn % (max) | Si % (max) | Cr % | Ni % | P (max) | S (max) | N (max) |
|---|---|---|---|---|---|---|---|---|
| ASTM A312 TP304L | 0.030 | 2.00 | 1.00 | 18.0–20.0 | 8.0–12.0 | 0.045 | 0.030 | 0.10 |
Trusted Stainless Steel 304L Pipe Stockist in Mumbai Our stock comes with verified mechanical test certification on record.
Standard room-temperature values for AISI 304L pipe.
Every consignment can be backed with the following documentation and tests, available on request.
Radiography & Ultrasonic Test
Hydrostatic Test
EN 10204 3.1 MTC
Positive Material ID
Intergranular Corrosion Test
EN 10204 3.2 Witnessed
Cross-reference table for UNS S30403 pipe as it is designated across the world’s major standards.
Where We Ship Most Frequently
As a reputed Stainless Steel 304L Pipe Exporter we share accurate size chart for every size shipped abroad.
| Size (in.) | Outside Diameter (mm) | Wall Thickness (mm) | Schedule | Weight (Kg/m) |
|---|---|---|---|---|
| 4″ | 114.30 | 8.56 | 80S | 22.67 |
| 1″ | 33.40 | 4.55 | 80S | 3.29 |
| 6″ | 168.28 | 14.27 | 120 | 54.75 |
| 1/2″ | 21.34 | 2.11 | 10S | 1.02 |
| 3″ | 88.90 | 11.13 | 160 | 21.67 |
| 2½″ | 73.03 | 5.16 | 40S | 8.77 |
| 5″ | 141.30 | 9.53 | 80S | 31.44 |
| 1/4″ | 13.72 | 2.24 | 40S | 0.64 |
| 8″ | 219.08 | 18.23 | 120 | 91.30 |
| 1¼″ | 42.16 | 4.85 | 80S | 4.53 |
| 3/4″ | 26.67 | 2.87 | 40S | 1.71 |
| 2″ | 60.33 | 5.54 | 80S | 7.60 |
| 3½″ | 101.60 | 5.74 | 40S | 13.78 |
| 1½″ | 48.26 | 3.68 | 40S | 4.11 |
| 6″ | 168.28 | 3.40 | 10S | 14.04 |
| 1″ | 33.40 | 6.35 | 160 | 4.30 |
| 3/8″ | 17.15 | 3.20 | 80S | 1.12 |
| 4″ | 114.30 | 13.49 | 160 | 34.05 |
| 2″ | 60.33 | 2.77 | 10S | 3.99 |
| 8″ | 219.08 | 8.18 | 40S | 43.20 |
| 1/4″ | 13.72 | 1.65 | 10S | 0.50 |
| 3″ | 88.90 | 3.05 | 10S | 6.56 |
| 1¼″ | 42.16 | 2.77 | 10S | 2.73 |
| 5″ | 141.30 | 15.88 | 160 | 49.87 |
| 3/4″ | 26.67 | 3.91 | 80S | 2.23 |
| 6″ | 168.28 | 18.26 | 160 | 68.59 |
| 1/2″ | 21.34 | 3.73 | 80S | 1.65 |
| 3½″ | 101.60 | 8.08 | 80S | 18.92 |
| 2″ | 60.33 | 8.74 | 160 | 11.29 |
| 1″ | 33.40 | 3.38 | 40S | 2.54 |
| 3/8″ | 17.15 | 2.31 | 40S | 0.86 |
| 8″ | 219.08 | 23.01 | 160 | 112.97 |
| 1½″ | 48.26 | 2.77 | 10S | 3.16 |
| 4″ | 114.30 | 3.05 | 10S | 8.50 |
| 2½″ | 73.03 | 7.01 | 80S | 11.59 |
| 6″ | 168.28 | 7.11 | 40S | 28.69 |
| 1/4″ | 13.72 | 3.02 | 80S | 0.81 |
| 3″ | 88.90 | 7.62 | 80S | 15.51 |
| 1¼″ | 42.16 | 6.35 | 160 | 5.69 |
| 3/4″ | 26.67 | 2.11 | 10S | 1.30 |
| 2″ | 60.33 | 3.91 | 40S | 5.52 |
| 5″ | 141.30 | 6.55 | 40S | 22.10 |
| 1″ | 33.40 | 2.77 | 10S | 2.13 |
| 3/8″ | 17.15 | 1.65 | 10S | 0.64 |
| 1½″ | 48.26 | 5.08 | 80S | 5.49 |
| 4″ | 114.30 | 6.02 | 40S | 16.32 |
| 8″ | 219.08 | 12.70 | 80S | 65.63 |
| 2½″ | 73.03 | 3.05 | 10S | 5.35 |
| 1/2″ | 21.34 | 2.77 | 40S | 1.29 |
| 3½″ | 101.60 | 3.05 | 10S | 7.53 |
Dimensional tolerance limits held on every SS 304L pipe order.
±0.4% or ±0.1 mm, whichever is greater
–12.5% / +no limit, per ASTM A999
Single random, double random or fixed cut length
0.2% of total pipe length, maximum
Reliable Stainless Steel 304L Pipe Supplier in India We provide mill pickled and bright annealed finishes on demand.
Mirror Polish
Electropolished
Dull Matte
Brushed Satin
Cold Rolled Bright
Bright Annealed
Quick comparison to help you pick the right construction for your project.
| Parameter | ASTM A312 SS F304L Seamless Pipe | ASTM A312 SS F304L Welded Pipe |
|---|---|---|
| Weld Line | None | Longitudinal, ground flush |
| Typical Size Range | 1/2″ – 12″ | 4″ – 24″ and above |
| Pressure Handling | Higher, uniform wall | High, weld-verified by RT/UT |
| Lead Time | Standard | Faster for large diameters |
| Cost | Higher per size | More economical, large OD |
Stainless Steel 304L Pipe Stockist in Mumbai Our stock comes from mills using standard seamless and welded methods.
304L coil slit to required strip width
Roll-formed and fusion welded longitudinally
Bead ground flush, sized to final OD
Solution annealed, pickled, RT/UT tested, MTC issued
Stainless Steel 304L Pipe Supplier in India We offer pipes for heat exchangers and oil & gas industry use.
Food Processing Equipment
Chemical Containers
Heat Exchangers
Architectural Structures
Kitchen Equipment
Oil & Gas Sector
Railway Cars & Trailers
Cryogenic & Machinery Use
Trusted Stainless Steel 304L Pipe Supplier in India Pricing depends on order quantity and finish selected.
Custom cut lengths priced against MOQ slabs
FOB/CIF freight and duty vary by importing country
Nickel/moly surcharge trends drive raw material cost
Mirror polish, PMI and third-party inspection add cost
Seamless commands a premium over ERW/EFW
Get a size, schedule and destination-based quote within 48 hours.
In-house value-added processing available on every SS 304L Pipe order.
Plasma, saw or laser cut to exact drawing dimensions
Weld-prep bevels or NPT/BSP threaded ends
2B, No.4 satin or No.8 mirror finishing lines
U-bends, coils and custom fabricated assemblies
Current ex-stock coverage held for immediate dispatch across sizes and constructions.
1/2″ – 8″ NB, ex-stock
4″ – 24″ NB, ex-stock
1/2″ – 12″ NB, ex-stock
No MOQ, cut to drawing
Custom sections on request
No.4 & No.8 finish held ready
We source our stock from these globally recognized stainless steel mills.
Jindal Stainless
Outokumpu
POSCO
Aperam
Sandvik
ThyssenKrupp Nirosta
Acerinox
Yieh United Steel (YUSCO)
Our SS 304L Pipe inventory is sourced from established stainless mills including Jindal Stainless, Outokumpu, Aperam, Acerinox, POSCO and Sandvik, and made available through dedicated stock points across the Middle East, the United States and Africa. This wide network keeps ready stock close to our customers and helps avoid long lead times on 304L orders.
HS Code 7304.41/7306.40 used across most importing customs authorities, confirm local tariff schedule before shipmentHS Code
Stockist for Outokumpu & Aperam SS 304L PipeStockist
Stocking Distributor for Jindal Stainless & POSCO 304L PipeDistributor
Authorised Stockist of Aperam & YUSCO 304L Pipe gradesStockist
Supplier of Outokumpu & Sandvik Seamless SS 304L PipeSupplier
Stockholder for North American Stainless & Jindal Stainless PipeStockholder
Distributor for Outokumpu & POSCO SS 304L PipeDistributor
Stocking Distributor for Outokumpu & North American Stainless PipeDistributor
Authorised Stockist of Aperam & YUSCO 304L Pipe gradesStockist
Stockholder for Jindal Stainless & Sandvik 304L PipeStockholder
Stockist of Aperam & Outokumpu 304L PipeStockist
Supplier of Outokumpu & Sandvik Seamless SS 304L PipeSupplier
Supplier of POSCO & YUSCO SS 304L PipeSupplier
Distributor for Aperam & Jindal Stainless 304L PipeDistributor
Snapshot of the projects and clients we’ve supplied SS 304L Pipe to across different industries.
3″ Sch 10S, mirror polished, PMI & hydro-tested, EN 10204 3.1 MTC.
Food & Dairy Processing Plant, Morocco
CASABLANCA, MOROCCO4″ Sch 40S, seamless, third-party witnessed.
Chemical Manufacturing Plant, Nigeria
LAGOS, NIGERIA6″ Sch 40S, radiographed weld, PMI verified.
Petrochemical Plant Contractor, UAE
ABU DHABI, UAE2″ Sch 10S, electropolished, orbital welded.
Pharmaceutical Equipment Fabricator, South Africa
JOHANNESBURG, SOUTH AFRICABrushed satin finish, custom cut lengths.
Construction & Facade Contractor, Egypt
CAIRO, EGYPT8″ large-bore, EFW, hydro & RT tested.
Municipal Water Treatment Project, USA
HOUSTON, USAFood processing, pharma equipment, chemical containers, structures and heat exchangers.
Yes, both refer to UNS S30403, the low-carbon 18Cr-8Ni grade.
304L has lower carbon (0.03% vs 0.08%), avoiding weld-decay corrosion.
Yes, along with EN 10204 3.1/3.2 MTC on request.
1/2″ to 24″ NB, Schedule 5S to 80S.
316L has added molybdenum for better chloride and pitting resistance.
Why Aesteiron?
Tools & Downloads
Conclusion
Stainless Steel 304L Pipe, certified to ASTM A312 / ASME SA312 and stocked ex-India in every size and schedule, is the dependable low-carbon choice for food processing, chemical, pharmaceutical and architectural projects. Buyers across Africa, the Caucasus and the Americas trust Aesteiron Steels LLP for fast, PED-ready 304L pipe quotes.
Quick form – quote in 2 hours.
