Weston Stainless is a top Midland, UK-based manufacturer and supplier of top–grade stainless steel products that provide efficient and long-lasting solutions for industrial use. Their top-grade products include Stainless Steel 439 Pipes that are highly acclaimed for their superior corrosion resistance, weldability, and heat stability. The pipes are produced using Grade 439 stainless steel and are manufactured in the seamless, welded, and ERW types. The alloy, low–carbon and titanium-stabilized ferritic stainless steel, has better oxidation resistance and enhanced high-temperature characteristics, and hence is well-suited for uses that need toughness, strength, and durability to withstand hostile environments.
Stainless Steel 439 Pipes contain a chemical composition that includes around 17-19% Chromium, 0.025% Carbon, 0.2-0.5% Titanium, and traces of Manganese, Silicon, and Phosphorus, which give them added corrosion resistance and mechanical strength. These pipes have good mechanical strength, with tensile strength of approximately 415-585 MPa, yield strength of about 205 MPa, and elongation of 20-30%. From the physical properties point of view, they exhibit high thermal conductivity, good oxidation resistance up to 850°C, and low thermal expansion, providing structural stability in high-temperature conditions.
| Specifications | ASTM A/ASME SA268/A731 CL |
| Dimensions | ASTM, ASME and API |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Wall Thickness | Sch 5s, 10s, 40s, 80s, 160, XXS |
| Size – Seamless 439 Pipes | 1/2″NB – 24″NB |
| ERW 439 Pipes | 1/2″ NB – 24″ NB |
| EFW 439 Pipes | 6″ NB – 100″ NB |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Types | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| End | Plain End, Beveled End, Treaded |
| Length | Single Random, Double Random & Cut Length. (Custom Sizes Available as per customers requirement) |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
| 439 | Min | – | – | – | – | – | 12.0 | – | – | – |
| max | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 14.0 | – | – | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 439 | 95,000 | 50,000 | 25 | – | 175 |
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Stainless Steel 439 Pipes find extensive application in automotive, construction, petrochemical, and power generation industries because of their high corrosion resistance and heat resistance. They are used in exhaust systems, heat exchangers, fuel system parts, and industrial piping where resistance to high-temperature oxidation is necessary. Stainless Steel 439 Pipes also find application in kitchen appliances, flue gas pipelines, and architectural uses where long-term durability is necessary. Their higher strength and weldability make them a first choice for manufacturing and engineering industries requiring cost-effective and high-performance piping solutions.
Excellent corrosion resistance and are used in applications requiring a robust structure. They typically come in sizes ranging from 1/2″ to 8″, with wall thicknesses varying based on the application.
Superior corrosion resistance and are used in high-temperature environments. They are available in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 0.5mm to 20mm.
Good corrosion resistance, these pipes are manufactured using the electric resistance welding process. They are available in sizes from 1″ to 12″ in diameter, with various wall thicknesses for different pressure ratings.
Corrosion resistance, are produced by longitudinal submerged arc welding. Sizes typically range from 6″ to 48″ in diameter, with wall thicknesses from 5mm to 25mm.
Excellent corrosion resistance, these pipes are used in various industries. They come in sizes from 1/4″ to 12″ in diameter, with wall thicknesses ranging from 1mm to 15mm.
Exhibit good corrosion resistance and are made by welding flat plates. They are available from 1″ to 24″ in diameter, with wall thicknesses tailored to specific pressure and temperature requirements.
Stainless Steel 439 Pipes are accompanied by basic test certificates, such as Mill Test Certificates (MTC) according to EN 10204 3.1/3.2, third-party inspection reports, and material traceability certificates. They are properly packed in wooden crates, pallets, or protective plastic coverings to avoid damage during shipment. Proper identification is ensured by labeling, and deliveries are coordinated effectively to fulfill international demand, adhering to industry standards and timely delivery to customers across the globe.
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