Stainless Steel Square Liquid Cooling Pipe For Data Centers

 

1. Outstanding corrosion resistance

The 316L stainless steel material contains molybdenum, which forms a dense chromium oxide passivation film, capable of resisting corrosive media such as chloride ions, acidic organic substances, and hydrofluoric acid, preventing pitting on the pipe wall and extending the service life to over 20 years.

It passed the neutral salt spray test for 240 hours without rust, meeting the ASTM A269 standard, and is suitable for salty environments or fluorinated liquid cooling systems.

 

2. High strength and stability

The tensile strength is ≥ 515 MPa, the yield strength is ≥ 205 MPa, and the elongation rate is ≥ 40%. It can withstand high-pressure cycling and equipment vibration, preventing deformation or rupture.

The full-length bending degree is ≤ 0.1%L, and the bending degree per meter is < 1.0 mm, ensuring no stress concentration risk after pipeline installation.

 

3. Efficient heat dissipation performance

The thermal conductivity is 16.3 W/(m·K) (at 100°C), and it is combined with a smooth inner wall (surface roughness Ra ≤ 0.8 μm), reducing fluid resistance and improving heat exchange efficiency.

It is suitable for high-flow requirements, with pipe diameters ranging from 3 to 50 mm, and supports customized flow rate design.

 

4. Cleanliness and compatibility

Factory prefabrication production, with triple purification including ultrasonic cleaning, acid washing passivation, and deionized water rinsing, with particle residue ≤ 1 μm, and electrical conductivity ≤ 10 μS/cm, avoiding contamination of optical modules or precision electronic components.

It is compatible with various cooling fluids (such as 3M fluorinated fluid, ethylene glycol water solution), without any chemical reaction risks.

 

 

 

 

Item	Specification
Product Name	Stainless Steel Square Liquid Cooling Pipe
Application	Data Centers / AI Servers / HPC Racks / CDU Systems
Material Grade	SS304 / SS316 / SS316L
Shape	Square / Rectangular
Outer Size Range	10×10 mm – 80×80 mm
Wall Thickness	0.8 mm – 3.0 mm
Length	500 mm – 6000 mm / Custom Length
Surface Finish	Pickled / Polished / Brushed / Passivated
Inner Surface	Clean / Burr-Free / Smooth Flow Channel
Connection Type	Welded / Threaded / Flanged / Quick Connect
Working Pressure	Customized According to System Design
Operating Temperature	-20°C to 120°C
Cooling Media	Water / Glycol Mixture / DI Water / Coolant
Fabrication Process	Laser Cutting / CNC Bending / TIG Welding
Leak Test	Air Pressure Test / Hydrostatic Test
Tolerance	±0.1 mm / Custom
Standard	ASTM / AISI / DIN / GB
Packaging	Protective Film + Wooden Case
OEM / ODM Service	Available
Delivery Time	Stock Ready / Custom Order Available

 

 

1. Full-process design support

Offer 3D modeling and fluid simulation analysis to optimize pipeline direction and flow velocity distribution, reducing pressure drop and energy consumption.

 

2. Material and specification customization

Support selection of 304/316L stainless steel, with pipe diameter, wall thickness, and length customized according to requirements. The longest production length is 12 meters of seamless pipe.

 

3. Connection pieces and accessories

Provide vacuum brazed joints, drip-free quick clamps, exhaust valves, etc. to ensure zero leakage installation of the system.

 

4. Clean production and testing

Complete welding and assembly in a 10,000-level clean workshop. Pass through penetrant testing and airtightness test (maintain 1.5 times working pressure for 30 minutes without leakage) to ensure product reliability.

 

 

1. What is a stainless steel square liquid cooling pipe used for?

A stainless steel square liquid cooling pipe is mainly used in data center liquid cooling systems, including AI servers, GPU racks, HPC cabinets, CDU units, and coolant distribution pipelines. It helps transfer coolant efficiently to remove heat from high-density equipment.

 

2. Why choose square liquid cooling pipe instead of round pipe?

Square liquid cooling pipe offers better space utilization, cleaner routing inside racks, easier mounting, and improved structural stability. It is ideal for compact data center cooling layouts.

 

3. Which material is best for liquid cooling pipes?

304 stainless steel is suitable for general cooling systems, while 316 or 316L stainless steel is recommended for higher corrosion resistance, longer service life, and demanding coolant environments.

 

4. Can the pipe be customized in size?

Yes. Stainless steel square liquid cooling pipes can be customized in outer dimensions, wall thickness, length, bending angle, connection type, and surface finish according to project requirements.

 

5. Is the pipe suitable for glycol or DI water coolant?

Yes. These pipes are commonly used with water, glycol-water mixtures, deionized water, and other industrial cooling fluids used in data center systems.

 

6. What connection types are available?

Common connection options include welded ends, threaded fittings, flanges, compression fittings, and quick-connect couplings for fast installation and maintenance.

 

7. How do you prevent leakage in liquid cooling systems?

High-quality square liquid cooling tubes are manufactured with precision welding, strict dimensional tolerance, and pressure leak testing such as hydrostatic or air pressure inspection before delivery.

 

8. What sizes are commonly available?

Typical sizes range from 10×10 mm to 80×80 mm, with wall thickness from 0.8 mm to 3.0 mm. Custom sizes can also be produced for special cooling projects.

 

9. Why is 316 stainless steel square pipe popular for data centers?

316 stainless steel square pipe provides superior resistance to corrosion, especially in long-term closed-loop cooling systems. It also reduces maintenance costs and improves reliability.

 

10. Can you provide OEM or fast delivery service?

Yes. Many manufacturers offer OEM / ODM production, sample support, custom fabrication, and fast delivery for urgent data center liquid cooling projects.

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