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Home > Stainless Steel > Stainless Steel 904L Welded Pipes
Laila Pipes and Tubes is a reputable manufacturer and supplier of top-notch Stainless Steel 904L Welded Pipes based in Muscat, Oman. The company specializes in delivering precision-engineered welded piping solutions that meet international standards, making them ideal for highly corrosive and demanding industrial settings. With state-of-the-art manufacturing facilities, rigorous quality control measures, and a talented technical team, Laila Pipes and Tubes caters to various industries, including chemical processing, petrochemical, oil and gas, power generation, and marine. Renowned for their consistent quality, prompt delivery, and customer-centric approach, the company has built a solid reputation in both regional and global markets.
The composition of Stainless Steel 904L Welded Pipes features a well-balanced blend of high chromium, nickel, and molybdenum, along with copper, which boosts their corrosion resistance in aggressive settings. Typically, their chemical makeup includes 19–23% chromium, 23–28% nickel, 4–5% molybdenum, and 1–2% copper. These pipes showcase impressive mechanical properties, boasting a tensile strength of about 490 MPa, a yield strength of 220 MPa, and an elongation of 35%. Their remarkable toughness, non-magnetic characteristics, and excellent weldability make them perfect for demanding applications that require both durability and strength in extreme conditions.
Specifications : ASTM A312 / ASME SA312
Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock
Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Size : 1/2″ NB – 24″ NB
Type : Welded
Form: Round Pipes, Square Pipes, Rectangular Pipes.
Length : Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | KS |
| SS 904L | N08904 | 1.4539 | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 | SUS 904L | 904S13 | STS 317J5L |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
| Grade | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 904L | Psi – 71000, MPa – 490 | Psi – 32000, MPa – 220 | 35 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The Stainless Steel 904L welded pipes are crafted from a high-alloy austenitic stainless steel that contains around 20–23% chromium, 25–28% nickel, 4–5% molybdenum, along with trace amounts of copper. This unique chemical makeup offers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in acidic and chloride-rich environments. The welded design guarantees uniform wall thickness, strong weld integrity, and dependable mechanical strength for industrial piping systems.
Laila Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 904L Welded Pipes in Muscat, OMAN, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.
| NB Sizes | Sch 5 | Sch 10 | Sch 40 | Sch 80 | Sch 160 |
| 1/8″ | ✓ | ✓ | ✓ | ✓ | |
| 1/4″ | ✓ | ✓ | ✓ | ✓ | |
| 3/8″ | ✓ | ✓ | ✓ | ✓ | |
| 1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3/4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 1″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 1 1/4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 1 1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 2 1/2″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 4″ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 5″ | ✓ | ✓ | ✓ | ✓ | |
| 6″ | ✓ | ✓ | ✓ | ✓ |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 20°C | At 500°C | |||||
| 904L | 7900 | 190 | 15 | – | – | 11.5 | – | 500 | 952 |
These Stainless Steel 904L welded pipes are widely utilized in applications that demand outstanding corrosion resistance and durability. They’re commonly found in chemical processing plants, fertilizer production, desalination facilities, and marine settings. Industries such as oil and gas, petrochemical, and power generation depend on these pipes to handle aggressive acids, chlorides, and corrosive fluids. Additionally, they are perfect for high-purity and process piping systems where a long service life and minimal maintenance are crucial.
Stainless Steel 904L Welded Pipes find extensive use in industries that demand superior corrosion resistance and longevity. They are commonly utilized in chemical processing plants, marine equipment, and oil and gas refineries, thanks to their ability to endure harsh chemicals and chloride-rich environments. Additionally, these pipes are essential in heat exchangers, power generation, pharmaceutical equipment, and the pulp and paper industries, where durability and hygiene are paramount. Their outstanding weldability and high resistance to stress corrosion cracking make them ideal for structural and fluid-handling applications in challenging operational conditions.
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