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Home > Stainless Steel > Stainless Steel 904L Seamless Pipes
Laila Pipes and Tubes, located in Muscat, Oman, stands out as a top-notch manufacturer and supplier of high-quality Super Duplex Steel Tubing. Known for their precision engineering and commitment to international standards, this company offers tubing that boasts remarkable strength, corrosion resistance, and durability. Super Duplex Steel Tubing is specifically crafted to perform reliably in highly aggressive environments, making it perfect for critical industrial and offshore applications. Laila Pipes and Tubes provides trustworthy tubing solutions to various industries throughout Oman and the Gulf region, ensuring high performance and long-lasting reliability even in demanding conditions.
Stainless Steel 904L Seamless Pipes consist of high chromium (19–23%), nickel (23–28%) content along with additions of molybdenum and copper, which increase corrosion resistance in aggressive environments like sulfuric and phosphoric acid. These pipes have an austenitic structure and superior mechanical properties, such as tensile strength between 490–710 MPa and yield strength of approximately 220 MPa. They show superior resistance to pitting, crevice corrosion, and stress corrosion cracking. 904L pipes have strength and toughness at higher temperatures and superior weldability and formability without losing corrosion protection.
Range : 6NB to 1200NB
Outer Diameter : 1/8″ NPS to 12″ NPS
Thickness : 0.6 mm to 12.7 mm
Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
Length : Single Random, Double Random & Cut Length
Specifications : ASTM B677 / ASTM SB677
Types : Round, Square, Rectangle, Hydraulic, Honed Tubes
End : Plain End, Beveled End
| STANDARD | UNS | WERKSTOFF NR. | JIS | AFNOR | BS | KS | EN |
| SS 904L | N08904 | 1.4539 | SUS 890L | Z2 NCDU 25-20 | 904S13 | STS 317J5L | X1NiCrMoCu25-20-5 |
| Ni | 23 – 28 |
| Cu | 1.00 – 2.00 |
| Cr | 19 – 23 |
| C | 0.20 max |
| Si | 1 max |
| Mn | 2 max |
| P | 0.045 max |
| S | 0.035 max |
| Mo | 4.00 – 5.00 |
| Grade | 904L |
| Tensile Strength (MPa) min | 490 |
| Yield Strength 0.2% Proof (MPa) min | 220 |
| Elongation (% in 50mm) min | 35 |
| Hardness | |
| Rockwell B (HR B) max | 92 |
| Brinell (HB) max | – |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The Super Duplex Steel Tubing is made from high-alloy duplex steel grades that contain around 25% chromium, 6–7% nickel, 3–4% molybdenum, and nitrogen. This unique blend creates a balanced austenitic-ferritic microstructure, which delivers outstanding mechanical properties like high tensile and yield strength, excellent toughness, and remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. The tubing maintains its structural integrity under high pressure and extreme temperatures, guaranteeing reliable performance in tough environments.
Laila Pipes and Tubes, one of the largest suppliers of Stainless Steel 904L Seamless Pipes in Muscat, OMAN, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 904L | N08904 | 904S13 | – | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | – |
Super Duplex Steel Tubing finds its place in industries that demand both high strength and exceptional corrosion resistance. Common applications include oil and gas pipelines, offshore platforms, chemical and petrochemical plants, seawater desalination systems, marine structures, and power generation equipment. Its durability, resistance to harsh conditions, and ability to endure mechanical and chemical stresses make Super Duplex Steel Tubing the go-to choice for critical industrial and engineering projects. Laila Pipes and Tubes is also a trusted manufacturer and supplier of premium Stainless Steel 904L Seamless Pipes, known for their precision engineering and adherence to international quality standards, delivering pipes that excel in corrosion resistance.
Stainless Steel 904L Seamless Pipes find application in various critical applications where there is a need for resistance against severe corrosion. They are used in chemical processing facilities, heat exchangers, marine components, offshore oil rigs, pulp and paper processing plants, and pharmaceutical production. They find application in acid storage systems and handling systems, gas scrubbers, and seawater cooling systems because of their exceptional resistance against chlorides and acid solutions. The unbroken construction guarantees equal strength and impermeable performance, which renders them ideal for high-pressure and high-temperature applications in hostile industrial conditions.
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 904L | 8000 | 200 | 15 | – | – | 13 | – | 500 | 850 |
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