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Ratna Exports manufactures and exports ASTM A423 Grade 1 pipe & ASME SA423 Grade 1 Corten steel tubes built to exact dimensional tolerances. Salt spray and high humidity degrade standard carbon steel rapidly. Corten Grade 1 ERW tubes form a continuous surface oxide layer upon atmospheric exposure, stopping rust progression entirely. Marine transport operators install these unpainted tubes directly in deck framing and structural assemblies to cut ongoing maintenance cycles.
A423 GR 1 ERW Tubes hold up in highly corrosive atmospheres, and that resistance drives their use in outdoor sculptures and large structural projects such as bridges. ASTM A423 weathering steel pipes grade 1 develop a stable, protective oxide layer upon atmospheric exposure without any coating requirement. The chemical composition of these tubes includes carbon, phosphorus, manganese, sulfur, copper, and silicon. This alloy mix resists oxidation, acidity, crevice corrosion, and stress cracking, extending the tubes’ service life well beyond that of standard carbon steel in the same conditions.
Beyond corten tubes, Ratna Exports supplies ASTM A423 grade 1 pipe in sizes from 15mm NB to 150mm NB, covering electric resistance welded and seamless construction. Stock moves in both forms. The SA 423 grade 1 pipe range ships in standard random lengths of 6 meters, with cut-to-length options available on request. Shipbuilders favour this grade for hull framing and deck structures, since the stable oxide layer removes the need for repeated painting over the vessel’s service life. Every length passes hydrostatic testing before it leaves the mill, and each consignment carries a certificate confirming compliance with ASTM A423 and ASME SA423 specifications.
We supply welded and seamless ASTM A423 Grade 1 ERW pipes to sites all over India in standard and custom dimensions. We ship directly from our warehouse. Every production batch is tested for tensile strength, chemical composition and dimensional checks before dispatch. All consignments are shipped with mill test certificates and ASME/ASTM compliance records. We can fulfil your trial order as well as container-load quantities with no minimum order penalties. Shipments are sent on the scheduled dates in reinforced packaging to prevent damage during transit.
Moreover, the A423 GR 1 Tubes exhibit exceptional strength and durability, making them suitable for demanding industrial applications like sugar mills and processing facilities. The chemical composition, featuring carbon, phosphorus, manganese, sulfur, copper, and silicon, further enhances their resistance to oxidation and corrosion, providing reliability in tough environments.
At Ratna Exports, we are dedicated to delivering high-quality Corten steel pipes and tubes worldwide. Our extensive inventory includes ASTM A423 / ASME SA423 Corten Steel Tubes in various forms, such as seamless, welded, fabricated, ERW, round, square, rectangle, and more, catering to diverse project requirements.
| Size Range | ½” OD to 16” OD |
| Standards | ASTM A 423 / ASME SA 423 |
| Grade | ASTM A423 GR 1, 2, 3 / ASME SA423 GR 1, 2, 3. |
| Type | Round, Square, Rectangle, Hydraulic, Honed Tubes |
| Length | Single Random, Double Random & Customise Size |
| Type | Weathering Steel |
| End | Plain End, Beveled End, Threaded End |
| Application | British Standard | Japanese Jis | German Din | American Astm |
| AIR PRE-HEATERS | BS-6323-5 BS-6323-6 | JIS G 3445 | DIN 17177 EN 10217-1 AND 2 EN 10305-2 AND 3 | ASTM A423 GR.1 ASTM A214 |
| Element | C, % | Mn, % | P, % | S, % | Si, % | Cu, % | Cr, % | Ni, % |
| A/SA 423 GR 1 | 0.15 max. | 0.55 max. | 0.06–0.16 | 0.060 max. | 0.10 min. | 0.20–0.60 | 0.24–1.31 | 0.20–0.70 |
Please note this is an approx A423 Gr 1 ERW Pipes price in India. For final ASTM A423 Grade 1 Pipe price list please mail us.
| Grade | Yield Strength MPa(min) | Tensile Strength MPa | Elongation % (min) |
| Corten A | 255 min | 415 min | 25 % |
| Element | SA/A423 GR 1 |
| Tensile Strength (MPa) | ≥415 |
| Yield Strength (MPa) | ≥255 |
| Elongation, % | ≥25 |
| Corten Steel A423 A Gr 1 Pipe |
| ASTM A423 A Gr 1 Pipe |
| Corten Steel Gr.1 Pipe |
| ASME SA423 Grade 1 Seamless Pipe |
| Corten Steel Gr 1 Seamless Pressure Pipes |
| A423 A Gr 1 Corten Steel High-Temperature Seamless Pipes |
| ASTM A423 Gr 1 SMLS Pipe |
| Weathering Steel ASTM A423 Gr 1 Seamless Pipe |
| Corten A423 Grade 1 Pipe |
| A423 Gr 1 Corten Steel Pipes |
As part of the A423 GR 1 Pipes offering relevant material tests, the industry offers several tests that are performed. Among the tests performed are mechanical tests, hardness tests, positive material identification tests, corrosion tests, pitting resistance tests, chemical analyses, flattening tests, flare tests, and bend tests.
The industry offers relevant documents with tubes made from the A423 Gr1 material. As part of the packages, you will receive fumigation certificates, welding procedures specifications, quality assurance plans, heat treatment charts, material test certificates, raw material reports, a commercial invoice, and a packaging list with net and gross weights.
As part of the offer for A423 GR 1 pipe, relevant test certifications such as manufacturer TCs in compliance with EN 10204, raw material certificates, third-party inspections, and other inspection reports are included with the pipes for your convenience.
A423 Gr 1 ERW Pipes are electric resistance welded Corten steel pipes made to ASTM A423 / ASME SA423 Grade 1, valued for their weathering resistance in marine and structural use.
Marine transport structures, shipbuilding frames, bridge components, and outdoor sculptures all use ASTM A423 Grade 1 Pipe, since its self-forming oxide layer resists corrosion without extra coating.
ASTM A423 Grade 1 Pipe carries a chemical composition built around carbon, manganese, phosphorus, sulfur, copper, and silicon, giving it the alloy content that drives its corrosion resistance.
Yes. SA 423 Grade 1 Pipes come in outside diameters from 15mm to 150mm NB, with multiple wall thickness options and both standard 6-meter and custom-cut lengths.
Ratna Exports customises ASTM A423 Grade 1 Pipes on length, wall thickness and end finish, handling both small trial batches and full container-load orders.
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