- +91 22 6777 6777
- info@aesteiron.com
Carbon ≤0.30%, Mn ≤1.20%
Low-carbon steel, weldable & ductile
ASTM A53 / ASME SA53 Grade B
Listed under UNS K03005
1/8″ – 26″ NPS
Schedule 10 through Schedule 160/XXS
EN 10204 3.1/3.2 & NACE MR0175
Every lot backed by a mill test certificate
Min 60,000 psi (415 MPa)
Yield min 35,000 psi (240 MPa)
Type S Seamless & Type E ERW
Bare, black, galvanized or coated
Global Export
Regular FCL/LCL shipments to Africa, MEA & the Americas
Dual-Code Certified
Every heat verified to ASTM A53 & ASME SA53
Ex-Stock Pricing
Direct mill-linked rates, zero broker markup
Quote In 2 Hours
Fast turnaround on Grade B pricing & stock
NACE Ready
Chemistry controlled for MR0175 compliance
Cut & Thread To Size
Plain, beveled or threaded ends on demand
📌 Table of Contents
ASTM A53 Grade B Pipe ranks among the most heavily stocked carbon steel pipes on the market, available as seamless (Type S) or electric-resistance-welded (Type E) construction under UNS K03005, and commonly referenced by trade names such as SA53 Grade B, A53 Gr.B and ASTM A53B. Aesteiron Steels LLP maintains ready stock spanning the full NPS and schedule range of this Carbon Steel A53 Gr.B pipe, offered in black, galvanized, FBE-lined and epoxy-coated finishes, with cutting, threading and shipment handled within 48 hours.
Fabricators and contractors working on fire protection sprinkler lines, plumbing systems, low-pressure gas distribution, structural piling and general-purpose applications choose this SA53 Type E Grade B pipe for its reliable weldability, moderate carbon content and cost advantage over higher-alloy P-series pipe. Each heat and coil is supplied with complete traceability, EN 10204 3.1/3.2 documentation, and NACE MR0175 compliant chemistry when specified by the order.
Every dimensional and mechanical detail, laid out card by card for quick reference.
From bare black pipe to fully lined pipe, coating options for every environment.
Mill-tested strength, ductility and pressure benchmarks every Grade B pipe must satisfy before dispatch.
Rated excellent with a low-carbon equivalent
Must show zero leakage or defects under test pressure
Minimum 35,000 psi (240 MPa)
Carried out as per ASTM A53 Section 15
Minimum 60,000 psi (415 MPa)
Calculated using the ASTM A530/A530M formula
Heat analysis limits that keep SA53 Grade B pipe weldable and ductile.
| Element | Symbol | Max % (Heat Analysis) |
|---|---|---|
| Vanadium | V | 0.08 |
| Sulfur | S | 0.045 |
| Nickel | Ni | 0.40 |
| Carbon | C | 0.30 |
| Chromium | Cr | 0.40 |
| Molybdenum | Mo | 0.15 |
| Manganese | Mn | 1.20 |
| Copper | Cu | 0.40 |
| Phosphorus | P | 0.05 |
Leading ASTM A53 Grade B Pipe Supplier in India delivering pipes joined using approved welding procedures.
Bevel and clean pipe ends to remove mill scale, rust, and moisture before welding.
Preheat thicker sections to reduce hydrogen cracking risk in the heat-affected zone.
SMAW, GTAW, or SAW is used, per ASME/AWS procedures, with matching filler metal.
Maintain interpass temperature to control grain growth and mechanical properties.
Visual, RT, or UT inspection confirms weld integrity per project specification.
Standard NPS sizes and Schedule 40 wall thickness kept as running stock.
| Size (in.) | NB (mm) | OD (mm) | SCH-60 Wall (mm) | SCH-60 Wt (kg/m) | SCH-40 Wall (mm) | SCH-40 Wt (kg/m) | SCH-STD Wall (mm) | SCH-STD Wt (kg/m) | SCH-30 Wall (mm) | SCH-30 Wt (kg/m) | SCH-20 Wall (mm) | SCH-20 Wt (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14″ | 350 | 355.6 | 15.1 | 126.4 | 11.13 | 94.3 | 9.53 | 81.3 | 9.53 | 81.3 | 7.92 | 68.1 |
| 1″ | 25 | 33.4 | - | - | 3.38 | 2.5 | 3.38 | 2.5 | - | - | - | - |
| 20″ | 500 | 508 | 20.6 | 248 | 15.1 | 183 | 9.53 | 177.2 | 12.7 | 155.1 | 9.53 | 117.2 |
| 1/4″ | 6 | 13.7 | - | - | 2.24 | 0.625 | 2.24 | 0.63 | - | - | - | - |
| 4″ | 100 | 114.3 | - | - | 6.02 | 16.07 | 6.02 | 16.07 | - | - | - | - |
| 1 1/4″ | 32 | 42.2 | - | - | 3.56 | 3.38 | 3.56 | 3.39 | - | - | - | - |
| 22″ | 550 | 558.8 | 22.2 | 294 | - | - | 9.53 | 129 | 12.7 | 171 | 9.53 | 129 |
| 2 1/2″ | 65 | 73 | - | - | 5.16 | 8.63 | 5.2 | 8.63 | - | - | - | - |
| 8″ | 200 | 219.1 | 10.3 | 53.1 | 8.2 | 42.5 | 8.2 | 42.5 | 7 | 36.8 | 6.35 | 33.3 |
| 1/2″ | 15 | 21.3 | - | - | 2.77 | 1.26 | 2.77 | 1.26 | - | - | - | - |
| 18″ | 450 | 457.2 | 19 | 206 | 14.3 | 156 | 9.53 | 105 | 11.1 | 122 | 7.92 | 87.8 |
| 2″ | 50 | 60.3 | - | - | 3.9 | 5.44 | 3.9 | 5.44 | - | - | - | - |
| 5″ | 125 | 141.3 | - | - | 6.55 | 21.77 | 6.6 | 21.77 | - | - | - | - |
| 3/4″ | 20 | 26.7 | - | - | 2.87 | 1.68 | 2.87 | 1.69 | - | - | - | - |
| 24″ | 600 | 609.6 | 24.5 | 355 | 17.4 | 255 | 9.53 | 141 | 14.3 | 210 | 9.53 | 141 |
| 3 1/2″ | 90 | 101.6 | - | - | 5.74 | 13.57 | 5.74 | 13.57 | - | - | - | - |
| 3/8″ | 10 | 17.1 | - | - | 2.31 | 0.84 | 2.31 | 0.84 | - | - | - | - |
| 12″ | 300 | 323.9 | 14.3 | 109 | 10.3 | 79.7 | 9.53 | 73.8 | 8.4 | 65.2 | 6.35 | 49.7 |
| 1/8″ | 3 | 10.3 | - | - | 1.73 | 0.357 | 1.73 | 0.37 | - | - | - | - |
| 16″ | 400 | 406.4 | 16.7 | 160 | 12.7 | 123 | 9.53 | 93.3 | 9.5 | 93.3 | 7.92 | 77.9 |
| 1 1/2″ | 40 | 48.3 | - | - | 3.68 | 4.05 | 3.68 | 4.05 | - | - | - | - |
| 10″ | 250 | 273 | 12.7 | 81.5 | 9.27 | 60.3 | 9.27 | 60.3 | 7.8 | 51.3 | 6.35 | 41.7 |
| 3″ | 80 | 88.9 | - | - | 5.5 | 11.3 | 5.5 | 11.3 | - | - | - | - |
| 6″ | 150 | 168.3 | - | - | 7.11 | 28.26 | 7.11 | 28.26 | - | - | - | - |
Recognized ASTM A53 Grade B Pipe Exporter in India supplying pipes rated for standard low to medium pressure service.
Up to 1,730 psi (2″ NPS)
Up to 2,470 psi (2″ NPS)
Up to 1,370 psi (2″ NPS)
Highest rating in the series
Up to 990 psi (2″ NPS)
Up to 990 psi (2″ NPS)
Choosing between the two manufacturing routes of Carbon Steel A53 Gr.B pipe.
Versatile ASTM A53 Grade B Pipe Supplier in India catering to construction, irrigation, and mechanical applications.
General Fabrication & Construction
Steam & Compressed Air Lines
Fire Sprinkler & Fire-Fighting Systems
Water Transmission & Distribution Mains
Agricultural & Irrigation Piping
Low-Pressure Oil & Gas Gathering Lines
Plumbing & HVAC Water Lines
Structural Piling & Scaffolding
Unit weight, kg per metre, for Schedule 40 ex-stock ASTM A53 Grade B pipe.
| Size (in.) | OD (mm) | Sch 80 Weight (kg/m) | Sch 40 Weight (kg/m) |
|---|---|---|---|
| 4″ | 114.3 | 22.32 | 16.07 |
| 1 1/2″ | 48.3 | 5.41 | 4.05 |
| 10″ | 273 | 96.01 | 117.15 |
| 1″ | 33.4 | 3.24 | 2.5 |
| 8″ | 219.1 | 64.64 | 105.16 |
| 2 1/2″ | 73 | 8.63 | 8.63 |
| 6″ | 168.3 | 42.56 | 93.27 |
| 12″ | 323.8 | 132.08 | 141.12 |
| 3″ | 88.9 | 15.27 | 11.29 |
| 1 1/4″ | 42.2 | 4.47 | 3.39 |
| 5″ | 141.3 | 30.97 | 21.77 |
| 2″ | 60.3 | 7.48 | 5.44 |
Established ASTM A53 Grade B Pipe Exporter in India manufacturing pipes through heat treatment and welding processes.
Billet (seamless) or hot-rolled coil (ERW) is chemically verified.
Billets are pierced & elongated, or coil is roll-formed into a tube shape.
Edges are HF-induction welded and the weld bead is trimmed flush.
Pipe is reduced to the exact NPS and schedule required.
Normalizing where specified, followed by hydrostatic and NDE testing.
Ends are cut/threaded/beveled and galvanizing or coating is applied.
Verified ASTM A53 Grade B Pipe Stockist in Mumbai supplying pipes with genuine mill certification.
Full chemical & mechanical traceability issued with every heat
Chemistry & hardness controlled for sour-service orders
Available on request for pressure-equipment & API-spec orders
Country-of-manufacture & specification compliance documentation for customs clearance
Confirms mill-wide quality management & process control accreditation
Every length marked & cross-referenced back to its original cast/heat number
Full-range ASTM A53 Grade B Pipe stockist, stocking every variant on the shelf.
Closest comparable low-carbon steel pipe standards used region by region.
HSN classification used for customs, GST and export-import documentation of ASTM A53 Grade B pipe.
HSN 7304 • GST 18% (India)
HSN 7306 • GST 18% (India)
7304 / 7306 series worldwide
Chemistry-controlled Grade B pipe for mildly sour and corrosive service conditions.
Mill-default chemistry – not inherently sour-service rated
Chemistry & hardness limits verified for mildly sour gathering lines
Avoids the cost of full alloy-grade pipe where full alloy resistance isn’t required
What actually moves the per-metre price of your Grade B pipe quote.
Larger OD and higher schedule raise per-metre weight and cost
Seamless carries a premium over ERW for the same size
Galvanized, FBE or epoxy add to the bare-pipe base rate
Full-truckload or container quantities unlock better rates
EN 10204 3.2, NACE or third-party witness add inspection cost
Send us your project requirements and we will verify NACE-compliant heats along with full documentation within 2 hours.
Beyond standard schedules, for buyers needing extra wall or extra bore.
Schedule 80 to XXS on request
Up to 26″ NPS, ERW/SSAW/LSAW
Custom length, double random or cut
Diligent ASTM A53 Grade B Pipe Stockist in Mumbai conducting routine hydrostatic testing on inventory.
Detects internal flaws, laminations & wall-thickness variation
Destructive sample testing to verify mechanical properties per ASTM A53
Checks OD, wall thickness, length, straightness & surface finish against tolerance
100% end-of-line pressure and seam integrity test
Confirms ductility & weld-seam soundness per ASTM A53 Section 15
Witnessed by SGS, Bureau Veritas, TUV or Lloyd’s on request
Responsive ASTM A53 Grade B Pipe Stockist in Mumbai valued for quick availability and strong stock advantages.
Accepted by codes and inspectors across every major region.
Lower cost than alloy or stainless pipe for equivalent duty.
Low carbon equivalent supports field welding without pre-heat in most cases.
Available bare, galvanized, FBE or epoxy lined.
Stocked from 1/8″ to 26″ NPS across Schedule 10 through XXS.
Available seamless, ERW, EFW, LSAW or SSAW to match project needs.
Guaranteed min. 60,000 psi tensile & 35,000 psi yield strength on every heat.
High global stock volume means shorter lead times than custom-alloy pipe.
Ex-stock and back-to-back sourcing from established A53 Grade B producers – as stockist and supplier, not broker.
Jindal SAW
Nucor Tubular Products
Wheatland Tube
Maruichi Leavitt
US Steel Tubular
MSL
ISMT
Reliable Pipes & Tubes
Careful ASTM A53 Grade B Pipe Supplier in India using corrosion-resistant packaging for safe transit.
Sized to length, banded in mill-standard bundles
End caps & rust-preventive oil applied for transit
Export-grade fumigated crates for smaller diameters
FCL/LCL stuffing with dunnage & securing straps
Global Delivery, Country by Country
We maintain ready stockholding and active supply channels across Africa, the Middle East, the CIS region and the Americas. From port-linked distribution hubs to on-the-ground stockists, our network is built to keep ASTM A53 Grade B pipe moving quickly to fire, plumbing, water, oil & gas, and infrastructure projects wherever they are located.
Caspian region oil & gas gathering line supply Supplier
South American stockholding for fire & water pipe Stockholder
Southern African stocking distributor coverage Distributor
Water & irrigation pipe supply into West Africa Distributor
Regional stock point for Suez & Nile Delta buyers Stockist
Stocking distributor for North American cross-border buyers Distributor
Distribution hub for West African fire & plumbing projects Stockist
Supply into East African infrastructure projects Supplier
Port-linked stockholding for onward MEA dispatch Stockholder
Regional construction & plumbing pipe supply Supplier
Marine & construction pipe supply for island projects Supplier
Regular supply into North African infrastructure works Supplier
A snapshot of recent SA53 Gr B pipe supply across our export markets.
4″ SCH 40, hot-dip galvanized, threaded & coupled ends.
Municipal Water Contractor, Nigeria
LAGOS, NIGERIA2″ SCH 40 black pipe, cut to length, mill certified.
Fire Protection Contractor, South Africa
JOHANNESBURG, SOUTH AFRICA10″ SCH STD FBE lined pipe, third-party witnessed.
Agricultural EPC Contractor, Mexico
MEXICO CITY, MEXICO6″ SCH 40, NACE MR0175 compliant heats, beveled ends.
Oil & Gas EPC Contractor, Saudi Arabia
DAMMAM, SAUDI ARABIA3″ SCH 40, seamless, mill test certificate supplied.
Industrial Plant Contractor, USA
HOUSTON, USA8″ SCH STD, FBE internal/external lining, plain ends.
Water Utility Contractor, Egypt
CAIRO, EGYPTFire protection, plumbing, low-pressure gas gathering, structural piling and water conveyance.
Type S is seamless; Type E is ERW and more economical for large volumes.
60,000 psi (415 MPa) tensile min; 35,000 psi (240 MPa) yield min.
Yes, chemistry & hardness controlled to ISO 15156 / NACE MR0175 on request.
1/8″ to 26″ NPS, Schedule 10 through XXS.
Why Aesteiron?
Tools & Downloads
Conclusion
ASTM A53 Grade B Pipe, certified to ASME SA53 and stocked ex-India in every size, schedule and coating, is the dependable carbon steel choice for fire protection, plumbing, gas gathering and general construction projects. Buyers across Africa, the Middle East and the Americas trust Aesteiron Steels LLP for fast, mill-certified Grade B pipe quotes.
Quick form – quote in 2 hours.
