Chanchai Stainless, a top manufacturer and supplier in Bangkok, Thailand, offers high-quality Stainless Steel 439 Pipes that are built for strength and durability. These pipes meet strict industry standards and resist corrosion, scaling, and oxidation. This ensures a long service life in tough environments. With their ferritic structure, they are a cost-effective choice compared to higher alloyed steels while still delivering reliable performance. Known for their excellent weldability, formability, and resistance to heat, Stainless Steel 439 pipes are popular in industries that seek cost efficiency without sacrificing structural integrity, mechanical performance, or overall reliability in demanding applications.
Stainless Steel 439 pipes contain chromium (17–19%), titanium stabilizers, and low carbon. This helps them resist intergranular corrosion and stress corrosion cracking. With a ferritic structure, they have a tensile strength of around 415 MPa and a yield strength of about 240 MPa. The elongation percentage indicates good ductility and toughness. Titanium improves weldability and reduces sensitization during fabrication. Their oxidation resistance up to 870°C suits them for high-temperature applications. This balanced composition and mechanical profile provide durability, consistent performance, and cost-effectiveness in industrial and automotive systems.
| 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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We ensures the highest quality standards for Stainless Steel 439 Pipes through rigorous testing and certification processes. Every pipe goes through extensive tests, including chemical analysis, mechanical testing, and dimensional inspection. In this regard, we provide suitable certificates like Mill Test Certificate (MTC) and ISO certifications to make sure every product stands as a reliable brand and follows the market norms.
Stainless Steel 439 Square Pipes offer 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.
These pipes offer 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.
Providing 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.
These pipes, known for their 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.
Offering 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.
These pipes 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 widely used in automotive exhaust systems, catalytic converters, and fuel systems because of their heat and corrosion resistance. In industry, they are found in heat exchangers, process equipment, and air-conditioning systems. Their economical performance makes them suitable for agricultural machinery and construction supports exposed to moderate corrosion. The food processing industry also uses them for structural components that require hygiene and strength. Water treatment facilities, energy plants, and household appliances benefit from their longevity and resistance to scaling. Overall, they offer an efficient solution where cost savings and reliable performance are priorities.
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