ASTM A423 GR 1 Corten Steel Tube & Pipe

Our company is a frontrunner in manufacturing, supplying, and exporting top-notch ASTM A423 Grade 1 Corten steel tubing. We assure that our ASTM A423 tubes and pipes will impress you with their exceptional finish, precise measurements, and long-lasting resilience. ASTM A 423 Corten steel pipes, Grade 1, are particularly popular in seafaring applications.

SA179 Tubes is a prominent supplier and exporter of ASTM A423 Grade 1 Corten Steel Tubes & Pipe.

ASTM A423 Grade 1 Tube represents a distinctive grade of carbon steel widely recognized as “weathering steel.” What sets this material apart is its remarkable ability to develop an oxide layer when exposed to harsh weather conditions, a characteristic that makes it especially valuable in open weather applications.

The oxide layer that forms on the surface of the material is commonly referred to as “patina.” Once this patina is established, it acts as a protective shield, resisting the effects of atmospheric elements. As a result, the core of the material remains uncorroded for extended periods of time, ensuring longevity and durability.

This type of steel is often referred to as “Corten Steel GR.1 ERW Pipe,” and it is prominently used in outdoor systems and structures that are constantly exposed to weather conditions. ASTM A423 pipe provides a reliable solution for structures and components that must endure the rigors of the environment, making it a preferred choice for various outdoor applications. ASTM A423 pipes are in demand in the industry because of their features. ASTM A423 tube is offered by us with durable and reliable assurance.

The ability to form a protective patina and resist corrosion under open weather conditions makes ASTM A423 Grade 1 Tube an invaluable material for outdoor projects, where maintaining structural integrity and longevity are of utmost importance.

The A423 Gr 3 Seamless Tube is a versatile and highly sought-after choice for complex piping systems. Its ease of fixture and remarkable corrosion resistance properties make it an ideal candidate for a variety of applications. The ASTM A423 Alloy Steel Tube finds its utility in a wide array of industries, including condensers, oil and gas, petrochemicals, and more.

The electric resistance welded (ERW) nature of these tubes provides not only robustness but also ease of welding, making them practical and efficient for a range of projects. Specifically, the ASTM A423 Grade 1 ERW Tubes are prominent in the power generation and specialty chemical industries.

In open weather applications, the ASTM A423 Gr.1 Weathering Steel, often referred to as Corten Steel, shines due to its patina-forming capabilities. One notable application includes the ASTM A423 Corten Steel Grade 3 air heater tube, where high temperatures and pressures are encountered.

What truly sets the ASTM A423 Gr 3 Seamless Steel Tube apart is its long-term performance. Once Corten steel forms its protective oxide layer, corrosion is significantly reduced, ensuring longevity and durability. As a result, the ASME SA423 Corten Steel Grade 1 EFW Tube is a preferred choice for a wide range of applications, including pharmaceutical equipment, sea water equipment, chemical plant components, heat exchangers, and the pulp and paper industry. It presents a cost-effective solution, particularly in highly corrosive atmospheres, where maintaining material integrity is of utmost importance.

ASTM A423 Grade 1 Corten Tube & Pipes Specification

Size Range ½ OD to 16 OD
Standards ASTM A 423 GR. 1,ASME SA 423, ASTM A 847, ASTM 588, ASTM 606
Grade ASTM A 423 GR.1 , asme SA A423 , astm a 847, astm 606
Shape Round, Square, Rectangle, Hydraulic, Honed Tubes
Length Single Random, Double Random & Cut Length
End Plain End, Beveled End
type Weathering steel / corten steel

ASTM A423 Gr. 1 Corten Steel Chemical Composition

Element A/SA 423 GR 1
C 0.15 max.
Mn 0.55 max.
P 0.06–0.16
S 0.060 max.
Si 0.10 min.
Cu 0.20–0.60
Cr 0.24–1.31
Ni 0.20–0.70

ASTM A423/ SA 423 GR 1 Corten Steel Material Properties

Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min

Application Industries Of Corten Steel ASTM A847 Pipes & Tubes

Petrochemical Industries

Petrochemical Industries

Marine Industries

Marine Industries

Food Processing Industries

Food Processing Industries

Oil & Gas Industries

Oil & Gas Industries


ASTM A423 is a standard specification for seamless and electric-resistance-welded (ERW) steel pipe. This pipe is specifically designed for use in applications where good atmospheric corrosion resistance and formability are required.

Seamless is manufactured from a solid cylinder of steel that is pierced and drawn to create a hollow tube which offers superior strength and consistency compared to ERW due to the absence of a weld seam. ERW is created by forming a flat sheet of steel into a cylindrical shape and then welding the seam along the length. More cost-effective option than seamless, but may have slightly lower strength at the weld joint.

Corten steel or weathering steel, is a specific type of steel that forms a stable rust-like protective layer on its surface when exposed to weather. ASTM A423 can be used for Corten steel pipes, typically designated as Grade 1.

Compared to stainless steel, ASTM A423 offers good corrosion resistance at a lower cost, especially for the ERW option. It develops a protective rust layer that slows down further corrosion, reducing maintenance needs. It can be readily bent and shaped for various applications. Both seamless and ERW options can be welded using appropriate techniques.

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