Your Professional N08904 Stainless Steel Pipe Supplier
ALLOK (Jiaxing) Metal Materials Co.,Ltd. was built in 2018, it owns two production bases in Jiaxing city and Yancheng city, equipped with precision cold rolling machines, cold drawing machines, bright annealing furnace, ultrasonic cleaning tank, passivation tanks, multi-line electropolishing devices, ultrapure water preparation machine, dryer, clean room, eddy current testing detector, ultrasonic flaw detector and other equipment, focusing on the production of stainless steel tubes, stainless steel pipes and nickel alloy tubes. for non-standard products that need to be customized, we have the ability to sample and mass produce for customers in a relatively short period of time.
Why Choose Us
Rich Products
Our company can produce stainless steel tubes, nickel alloy tubes, electrolytic polished tubes, bright annealed tubes, stainless steel coils, stainless steel capillary tubes, alloy tubes, etc.
Products Widely Used
The products produced by our company can be widely used in the biopharmaceutical industry, fine chemical industry, semiconductor industry, instrumentation industry, gas engineering industry and aerospace industry.
Advanced Production Equipment
Our company has advanced production equipment, such as precision cold rolling mills, cold drawing machines, bright annealing furnaces, ultrasonic cleaning tanks, passivation tanks, multi-line electrolytic polishing devices, etc.
Quality Guaranteed
All products we produce have ISO9001:2015 certificates, and all products are strictly tested in accordance with industry standards and contract agreements before leaving the factory. MTC is provided, and third-party testing certificates can be provided when necessary.
Advantages of N08904 Stainless Steel Pipe
Corrosion Resistance
N08904 Stainless Steel Pipe boasts extraordinary resistance to acids, such as sulfuric acid, phosphoric acid, and acetic acid, making it an ideal choice for corrosive environments.
01
High Strength
This N08904 pipe provides excellent strength and toughness, ensuring reliable performance even under extreme conditions.
02
Heat Resistance
N08904 Stainless Steel Pipe exhibits exceptional heat resistance, making it suitable for applications involving elevated temperatures and thermal cycling.
03
Weldability
The weldability of N08904 stainless steel tube is excellent, allowing for easy fabrication and installation.
04
Low Carbon Content
With a low carbon content, Stainless Steel Alloy N08904 offers superior resistance to intergranular corrosion, enhancing its durability and longevity.
05
Specification
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Stainless Steel 904L Tubing Standards |
ASTM B677 / ASME SB677 |
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Stainless Steel 904L Seamless Tube Size |
3.35 mm OD To 101.6 mm OD |
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Marking |
All Stainless Steel 1.4539 Tubing are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
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ASTM B677 UNS N08904 Tubing Length |
Single Random, Double Random, Standard & Cut length Tube |
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904L SS Tubing Finish |
Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
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Value Added Service |
Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
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Specialize in |
Stainless Steel 1.4539 Capillary Tube & Other Odd Size N08904 Stainless Steel Heat Exchanger & Condenser Tube |
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Form |
‘U’ bent, Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc |
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Types of 904L Steel Tubing |
Seamless, ERW, EFW, Welded, Fabricated Tube / Tubing |
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904L SS Tube wall thickness |
0.020" –0.220", (special wall thicknesses available) |
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904L Steel Tube End |
Plain End, Beveled End, Treaded Tube |
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Stainless Steel 904L Welded Tube Size |
6.35 mm OD To 152 mm OD |
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Alloy 904L Tubing Swg & Bwg |
10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
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Application & uses of 904L Stainless Steel Tubing |
Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube, |
Heat Treatment
N08904 (904L) is typically used in an annealed condition, which ensures good formability and corrosion resistance. Annealing is performed by heating the material to a temperature range of 1050–1150°C and then cooling it rapidly. This treatment helps relieve internal stresses and improves the alloy’s ductility and corrosion resistance.
Forming
The alloy is easily formed using conventional techniques such as hot rolling, cold rolling, and forging. When hot working, 904L should be heated to temperatures between 1100°C and 1200°C, and rapid cooling should be applied afterward to ensure optimal performance.
Welding
Welding of N08904 (904L) can be carried out using typical methods such as TIG, MIG, and SMAW. It is essential to use a compatible filler material to ensure that the welds retain the same level of corrosion resistance as the base material. Preheating is not required, but post-weld heat treatment may be recommended for thick sections to relieve stresses and enhance weld integrity.
Corrosion of Welds
While 904L exhibits excellent corrosion resistance, welding can sometimes lead to localized corrosion, such as weld decay. To mitigate this risk, proper post-weld treatment is essential. Descaling, pickling, or passivating the weld area can prevent the formation of chromium carbides and restore the material’s resistance to corrosion.
Descaling, Pickling, and Cleaning
To enhance the surface quality and corrosion resistance, N08904 (904L) should undergo descaling or pickling processes. This removes oxide layers formed during manufacturing processes. Pickling typically involves using a mixture of nitric acid and hydrofluoric acid, followed by thorough rinsing and passivation to prevent future corrosion.
Surface Hardening
For specific applications requiring enhanced surface properties, surface hardening techniques such as nitriding or shot peening can be applied. These processes improve wear resistance without compromising the alloy’s corrosion resistance, making it suitable for parts exposed to high mechanical stress.
Technical Data
| 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 Tube. |
Chemical Processing
Used in equipment such as reactors, heat exchangers, and tanks where resistance to aggressive chemicals like sulfuric acid, phosphoric acid, and acetic acid is required.
Oil and Gas Industry
Employed in pipelines, offshore platforms, and other equipment exposed to high levels of chloride and other corrosive substances.
Marine and Offshore:
Excellent resistance to seawater and chloride stress corrosion makes it a go-to choice for marine piping systems, desalination plants, and offshore platforms.
Power Generation
Used in heat exchangers, cooling systems, and condensers where both corrosion and temperature resistance are crucial.
Pharmaceuticals and Food Processing
Because of its high purity and resistance to contamination, UNS N08904 (904L) is also used in pharmaceutical equipment, tanks, and pipelines in the food and beverage industries.
FAQ
We're well-known as one of the leading n08904 stainless steel pipe manufacturers and suppliers in China. Please feel free to wholesale custom made n08904 stainless steel pipe at competitive price from our factory.
N08904 Stainless Steel Pipe