Your Professional S31803 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 S31803 Stainless Steel Pipe
Anti-Corrosive Properties
Since its anti-corrosive abilities are typically what it’s touted for, we need to discuss them in detail. Often used in sea water, S31803 stainless steel thrives when it comes to resisting corrosion from chloride.
Strength
Though it’s not the absolute strongest stainless steel on the market, S31803 is still very strong. Not only can it withstand a great deal of consistent pressure over prolonged periods of time, it can withstand physical trauma as well.
Affordability
S31803 can be sold for less money than other anti-corrosive stainless steels because it contains less nickel. Because nickel is costly to mine, it typically amps up the price of steels which contain it.
Water-friendly
As we mentioned above, S31803 stainless steel has top-tier anti-corrosive abilities. These abilities allow it to thrive in settings where water is ever-present.
Technical Specifications of S31803 Stainless Steel Pipe
Chemical Composition (ASTM A790/A928)
|
Element |
Cr |
Ni |
Mo |
N |
C |
Mn |
Si |
P |
S |
Fe |
|
% Range |
21-23 |
4.5-6.5 |
2.5-3.5 |
0.08-0.20 |
≤0.03 |
≤2.0 |
≤1.0 |
≤0.03 |
≤0.02 |
Balance |
Mechanical Properties
|
Property |
Value |
|
Tensile Strength |
≥620 MPa |
|
Yield Strength |
≥450 MPa |
|
Elongation |
≥25% |
|
Hardness (Brinell) |
≤290 HB |
Available Forms: Seamless & welded (ERW, SAW, LSAW)
Sizes Range: 1/2″ to 48″ (DN15 to DN1200)
Standards Compliance: ASTM A790, ASME SA790, NACE MR0175
Testing: Hydrostatic, PMI, ultrasonic, eddy current, intergranular corrosion test
Surface Finish: Pickled, polished, or as required

Components of S31803 Stainless Steel Pipe
S31803 stainless steel is made out of two different types of steel: austenitic steel and ferritic steel. By combining these steels, S31803 is capable of serving a number of different purposes at a reasonable price.
Austenitic
Dense in nickel and chromium, austenitic steel is an expensive steel known primarily for its anti-corrosive properties. It withstands not only high levels of heat, but saltwater as well.
Ferritic
Whereas austenitic steel is known for its anti-corrosive characteristics, ferritic steel is known for its strength and structural characteristics. High in chromium, it also contains titanium, aluminum, and a variety of other metals.
Applications of S31803 Stainless Steel Pipe
Oil & Gas Industry
Offshore platforms, subsea pipelines, risers
01
Chemical Processing
Acid storage, heat exchangers, reactors
02
Desalination Plants
Seawater intake and outfall systems
03
Power Generation
Flue gas desulfurization (FGD) systems
04
Marine Engineering
Shipbuilding, ballast systems, propeller shafts
05
FAQ
We're well-known as one of the leading s31803 stainless steel pipe manufacturers and suppliers in China. Please feel free to wholesale custom made s31803 stainless steel pipe at competitive price from our factory.
1 Inch Stainless Steel Tubing Coil, S31803 Stainless Steel Pipe
