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A333 Seamless and Welded Steel Pipe

ASTM A333 is the standard specification for seamless and welded carbon and alloy steel pipes intended for low-temperature applications or other applications requiring notch toughness. This standard covers several grades of ferritic steel: Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10 and Grade 11.

Carbon Steel: Properties, Production, Examples and Applications Carbon steel is an iron-carbon alloy containing up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements; however, they often contain manganese. The maximum content of manganese, silicon and copper should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.

A333 Seamless and Welded Steel Pipe – Description
The main components of A333 seamless steel pipes include iron, carbon, chromium, nickel, manganese and other elements. Chromium offers excellent corrosion resistance, whilst the addition of nickel further enhances the material’s corrosion resistance and toughness. A333 seamless steel pipes possess high strength and hardness, as well as good plasticity and toughness. These excellent mechanical properties make A333 seamless steel pipes an ideal choice for many high-strength, high-corrosion-resistant applications. A333 seamless steel pipes are commonly used to transport oil and natural gas at high temperatures and under high pressure, owing to their excellent sealing properties and corrosion resistance.
Product Specifications
Product Name A333 Seamless and Welded Steel Pipe – Description
Standard EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer Diameter Seamless: 1/4″–36″ Welding: 21.3 mm–3,620 mm
Round Tube: 1/2″–10″ Square Tube/Rectangular Tube: 15×15 mm–400×600 mm
Wall Thickness Seamless: 1.25 mm–50 mm Welding: 1.65 mm–65 mm
Length 3–12 metres, customisation available
Surface Process Bright, Polished, Black
Other Services Machining (CNC), Centreless Grinding (CG), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small-scale Machining, etc.
Chemical Composition
Seamless and ERW Welded Pipe Maximum Phosphorus Content 0.050%
Mechanical Properties
A252 Tensile Strength psi (MPa) Yield Strength psi (MPa)
Grade 1 50,000(345) 30,000(205)
Grade 2 60,000(415) 35,000(240)
Grade 3 66,000(456) 45,000(310)

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Find answers to frequently asked questions about our steel products, quality standards, export procedures, customisation services and global delivery solutions. Find out more about how Xinghan Group Co., Ltd. supports customers worldwide with a reliable supply of steel.

Xinghan Group Co., Ltd. specialises in supplying a wide range of steel products, including stainless steel plates, coils, pipes and rods; carbon steel plates, coils and pipes; galvanised steel products; PPGI coils; PPGL coils; aluminium products, copper products, roofing sheets and other bespoke steel solutions to meet a variety of industrial requirements.

Xinghan Group Co., Ltd. is a professional steel supplier based in China, working with reliable production facilities and processing partners to provide high-quality steel products at competitive prices, with a stable supply capacity and professional export services.

We maintain strict control over product quality at every stage, from the selection of raw materials through to production, processing, inspection and dispatch. Our steel products comply with international standards such as ASTM, AISI, DIN, EN and JIS to ensure reliable performance and consistent quality.

 

Yes. We provide bespoke solutions based on our customers’ specifications, including size, thickness, surface treatment, material grade, cutting, processing and packaging requirements. Our professional team helps customers find the most suitable steel solutions for their projects.