Stainless Steel 904L Seamless Pipes
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Midland Alloys Inc. is a premier stainless steel 904L seamless pipes manufacturer, dedicated to delivering high-performance piping solutions for the most challenging industrial environments. As a trusted 904L seamless pipes supplier, we specialize in producing super austenitic SS seamless pipes that offer exceptional resistance to pitting and stress corrosion cracking. Our manufacturing process utilizes premium-grade raw materials to ensure every pipe meets rigorous international quality standards. We cater to specialized industries requiring superior durability, providing precision-engineered pipes that maintain structural integrity under extreme pressure. With a commitment to excellence, Midland Alloys Inc. remains a global leader in high-alloy piping technology.
What is SS 904L Seamless Pipes?
SS 904L seamless pipe is a premium super-austenitic stainless steel grade (UNS N08904) known for its exceptional resistance to corrosive acids, chlorides, and sulfides. 904L stainless steel seamless pipes feature a seamless extrusion process, delivering uniform wall thickness and superior pressure handling without weak points from welding. Ideal for demanding industries, they excel in sulfuric acid plants, pharmaceutical processing, and desalination systems
Benefits of SS 904L Seamless Pipes
- Excellent corrosion resistance to acids, chlorides, and seawater.
- High resistance to pitting, crevice, and stress corrosion cracking.
- Good strength and performance at elevated temperatures.
- Seamless construction ensures leak‑tight, uniform, and reliable flow.
- Long service life with low maintenance and fewer replacements.
- Easy to weld and fabricate without post‑weld heat treatment.
- Clean, smooth surface suitable for hygienic and chemical processes.
Technical Specifications of Stainless Steel 904L Seamless Pipes
Seamless Pipe OD : 1/8 -12" NPS
ASTM B677, ASTM A269
Seamless
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
No. 2B - Mill finish/ Matte finish, No.8 - Mirror finish, No. 4 - Brushed finish, Bright, Annealing, Polished, Mirror
Types of Stainless Steel 904L Seamless Pipes
SS 904L seamless pipe types are engineered for corrosion-critical applications where chemical resistance and mechanical reliability are paramount. These 904L seamless pipe forms are particularly suited for chemical and acid-handling environments, ensuring long-term performance in aggressive media.
Pipe Forms
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Round PipeIdeal for acid and chemical fluid handling.
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Square PipeUsed for structural applications in corrosive installations.
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Rectangular PipePerfect for equipment frames in chemical plants.
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Boiler PipeDesigned for thermal systems exposed to corrosive media.
- Heat Exchanger Pipe
Suitable for acidic and chloride-rich heat transfer systems.
Contact us today to discuss how Stainless Steel 904L Seamless Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| Element | C | Mn | Ni | Cr | S | Mo | N | Cu | P | Si |
| Min | – | – | 23 | 19 | – | 4 | – | 1 | – | – |
| Max | 0.2 | 2 | 28 | 23 | 0.3 | 5 | 0.1 | 2 | 0.03 | 0.7 |
| Property | Tensile Rm | R.p. 0.2% Yield | Elongation (2” or 4D gl) |
| Value | 71 ksi / 490 MPa (min) | 32 ksi / 220 MPa (min) | 35% (min) |
| Unit | ksi / MPa | ksi / MPa | % |
| Grade | UNS No | Old British BS | Old British En | Euronorm No | Euronorm Name | Swedish SS | Japanese JIS |
| 904L | N08904 | 904S13 | X1NiCrMoCu25-20-5 | 1.4539 | – | – | SUS 890L |
Stainless Steel Seamless Pipe Grades We Also Offer
How SS 904L Seamless Pipes Are Manufactured
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications of Stainless Steel 904L Seamless Pipes
Why Choose SS 904L Seamless Pipes from Midland Alloys Inc.
Midland Alloys Inc. leverages deep technical expertise in high-alloy corrosion-resistant tubing to provide quality SS 904L seamless pipes that meet the stringent demands of the oil, gas, and petrochemical sectors. As a premier 904L seamless pipe supplier, we ensure every batch undergoes rigorous testing to guarantee full quality compliance and dimensional precision. Our logistical wing exports globally, providing export-ready documentation, sea-worthy packaging, and timely delivery to international job sites. By choosing our seamless solutions, clients benefit from a manufacturer that prioritizes metallurgical integrity and comprehensive technical support for complex piping projects.
