Kyaw Stainless is a reputable manufacturer and supplier based in Naypyidaw, Myanmar, known for its top-notch Stainless Steel 446 Tubing, which is celebrated for its remarkable heat and corrosion resistance. These tubes are meticulously crafted to perform reliably in tough, high-temperature settings. At Kyaw Stainless, they prioritize product quality by employing advanced manufacturing methods and adhering to strict quality control measures. The Stainless Steel 446 Tubing is built to last, offering impressive durability, oxidation resistance, and dimensional stability, making it a go-to choice for industries that require dependable and long-lasting performance in extreme thermal and corrosive environments.
This tubing is mainly made up of iron, with 23–27% chromium, along with trace amounts of molybdenum, silicon, and manganese. As a ferritic stainless steel grade, it boasts exceptional resistance to oxidation, scaling, and corrosion, even at elevated temperatures. In terms of mechanical properties, the tubing has a tensile strength of about 485 MPa and a yield strength of roughly 275 MPa, providing good hardness and moderate ductility. It retains its strength and stability even at temperatures over 1000°C, ensuring outstanding performance in high-heat situations.
| Specifications | : | ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 |
| Dimensions | : | ASTM, ASME and API |
| Standards | : | GB/T 14975-2002, GB/T 14976-2002, GB 13296-91, API, ASTM A213, ASTM A312, ASTM A269, JIS G3459, JIS G3463, JIS G3448, DIN17458 |
| 446 Pipes & Tubes | : | 1/2″ NB – 24″ NB |
| ERW 446 Pipes & Tubes | : | 1/2″ NB – 24″ NB |
| EFW 446 Pipes & Tubes | : | 6″ NB – 100″ NB |
| Tubing Size | : | 1/8″NB TO 30″NB IN |
| Specialized in | : | Large Diameter Size |
| Schedule | : | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | : | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| Length | : | Single Random, Double Random & Cut Length. |
| End | : | Plain End, Beveled End, Treaded |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | N | |
| 446 | Min | – | – | – | – | – | 23.00 | – | – | 0.10 |
| max | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.00 | – | 0.50 | 0.25 |
| Density | 7.5 g/cm3 |
| Melting Point | 1510 °C (2750 °F) |
| Tensile Strength | Psi – 75,000 , MPa – 485 |
| Yield Strength (0.2%Offset) | Psi – 40,000 , MPa – 275 |
| Elongation | 20 % |
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Stainless Steel 446 Tubing is extensively applied in sectors where there is a high demand for superior heat and corrosion resistance. It is widely utilized in furnace parts, heat exchangers, boiler baffles, and exhaust systems owing to its high temperature resistance. It is also utilized in cement factories, power generation, and petrochemical plants where sulfur-containing gases and intense heat conditions are prevalent. Its superior oxidation, pitting, and thermal fatigue resistance provides a long life of service and is thus the ideal material for harsh industrial processes where strength and toughness are demanded.
Highly resistant to oxidation and corrosion, Stainless Steel 446 Seamless Tubing is used in high-temperature environments. It comes in various sizes, typically ranging from 1/8 inch to 12 inches in diameter and up to 60 feet in length, ensuring strength and durability without welds.
Excellent corrosion resistance, Stainless Steel 446 Welded Tubing is used where cost-effectiveness is key. Available in diameters from 1/4 inch to 8 inches and lengths up to 20 feet, it is ideal for general industrial applications and is welded for a more affordable solution
Superior resistance to high temperatures and corrosion, Stainless Steel 446 Heat Exchanger Tubes are designed for heat exchange systems. Typically available in diameters from 1/2 inch to 4 inches and custom lengths, they ensure efficient thermal transfer and durability under extreme conditions.
Excellent oxidation resistance, Stainless Steel 446 Instrumentation Tubing is used in precise measurement systems. Commonly found in sizes from 1/8 inch to 2 inches in diameter, it provides reliability and accuracy in high-temperature and high-pressure environments.
High corrosion resistance, Stainless Steel 446 Boiler Tubes are designed to withstand high-pressure and temperature in boilers. Typically available in diameters from 1 inch to 5 inches and lengths up to 30 feet, they are essential for reliable boiler operation.
Excellent resistance to oxidation and corrosion, Stainless Steel 446 U-Tubes are used in compact heat exchangers. They generally come in diameters from 1/2 inch to 3 inches, with customizable lengths and bends to fit specific heat exchanger designs
Highly resistant to high-temperature corrosion. Available in sizes from 1/4 inch to 6 inches in diameter and varying lengths, these tubes are used in condenser systems to handle heat and corrosion effectively.
Exceptional corrosion and oxidation resistance, Stainless Steel 446 Fin Tubes enhance heat transfer efficiency. Typically available in diameters from 1/2 inch to 3 inches with fins of various lengths and configurations, they are used in heat exchangers and cooling systems.
Stainless Steel 446 Tubing finds its applications across various sectors, including power generation, furnace construction, petrochemical, and automotive industries. It’s particularly well-suited for uses like heat exchangers, boilers, gas turbines, exhaust systems, and kiln liners, thanks to its excellent resistance to oxidation and scaling. Additionally, the tubing performs admirably in environments with sulfur gases and other corrosive substances. Kyaw Stainless is committed to delivering 446 Tubing that guarantees long-term durability, structural integrity, and reliable performance, making it the top choice for demanding high-temperature and corrosive service applications.







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