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316 Liquid Cooling Pipe

The 316 liquid cooling pipeline is made of 316/316L austenitic stainless steel, specially designed for data centers, high-power AI servers, and industrial cooling systems. Its core component contains 2-3% molybdenum, significantly enhancing its resistance to pitting, crevice corrosion, and chloride ion erosion, and enabling stable operation within a temperature range of -40°C to 150°C. It can withstand extreme conditions of up to 700°C (custom design required). The product complies with international standards such as ASTM A312 and JIS G3459, and has obtained certifications such as ISO9001 and PED 2014/68/EU, ensuring long-term reliability and safety.

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Product Introduction

Product features

01.

Outstanding corrosion resistance

The molybdenum element forms a dense oxide film, effectively resisting erosion from seawater, chemical solutions, and chlorine-containing coolant. The lifespan is 2-3 times longer than that of 304 stainless steel.

Suitable for pH neutral to weakly acidic media, compatible with most synthetic coolants and ethylene glycol mixtures.

02.

High-precision manufacturing process

Using laser welding technology, the flatness of the internal and external weld seams is ≤ 0.1mm, the inner wall roughness Ra is ≤ 0.8μm, the flow resistance is reduced by 15%, and the heat exchange efficiency is improved.

Supports tolerance control: outer diameter ± 0.05mm, wall thickness ± 0.02mm, length ± 0.2mm, ensuring system sealing.

03.

High-pressure resistance and lightweight design

The pressure-bearing capacity reaches 4 bar (burst pressure > 10 bar), the wall thickness is only 0.4-1.5mm, the weight is 40% lighter than copper tubes, reducing installation load.

75mm×75mm square cross-section design (optional), optimizing space utilization, suitable for compact server cabinets.

04.

Low maintenance and long lifespan

Resistant to scaling and biological adhesion, reducing cleaning frequency, maintenance cost reduced by 30%.

Passed 6000-hour salt spray test, expected service life exceeds 20 years.

Application

DN25 Stainless Steel Piping for Thermal Management Systems

DN40 Stainless Steel Tube for Refrigeration Systems

1. Data center liquid cooling system

As the core pipeline of the cooling capacity distribution unit (CDU), it connects the cold plates and the secondary-side circulation, achieving direct cooling for CPU/GPU, and reducing the PUE value to below 1.1.

It is compatible with the liquid circulation pipeline of immersion cooling tanks, ensuring corrosion resistance for long-term stable operation.

2. High-power AI server cooling

Used for the liquid cooling circuit of GPU clusters, it can withstand instantaneous high-load thermal shock and ensure a heat flow density of more than 100 kW/m² for cooling requirements.

3. Industrial high-temperature cooling scenarios

Cooling of nuclear power plant equipment, liquid cooling circuits of plasma cladding equipment, capable of withstanding extreme temperatures of 700°C (customized 316L high-temperature alloy pipes required).

4. Medical and food-grade applications

316L material complies with FDA standards, used for sterile cooling pipelines of pharmaceutical equipment and heat exchange systems in food processing lines.

Specification

Parameter	Specification
Product Name	316 Liquid Cooling Pipe
Material Grade	316 Stainless Steel
Pipe Type	Square liquid cooling pipe / Coolant Pipe
Shape Options	Round Tube / Square Tube / Customized Shape
Outer Diameter	6mm / 8mm / 10mm / 12mm / Custom
Wall Thickness	0.5mm – 2.0mm / Custom
Length	Customized According to Drawing
Surface Finish	Polished / Pickled / Passivated
Connection Type	Welding / Threaded / Quick Connector / Compression Fitting
Bending Process	CNC Precision Bending Available
Cooling Medium	Water / Glycol Mixture / Coolant Fluid
Working Pressure	Custom Available Based on Design
Temperature Resistance	Suitable for High Temperature Cooling Systems
Corrosion Resistance	Excellent Resistance to Moisture, Chemicals, and Salt Spray
Leak Test	100% Pressure & Leak Testing Available
OEM / ODM Service	Available
MOQ	Negotiable
Delivery Time	Fast Delivery / Based on Order Quantity
Packaging	Carton / Wooden Case / Customized Export Package

Custom services

1. Size and shape customization

Support flexible customization of outer diameter 4-51mm and wall thickness 0.4-1.5mm, providing circular, square and irregular cross-section pipelines.

The minimum bending radius can reach 1.5 times the pipe diameter, meeting complex wiring requirements.

2. Surface treatment options

Provide 2B bright finish, 4K mirror finish, HL polishing and electrochemical polishing treatments, reducing friction coefficient and enhancing aesthetics.

FAQ

1. What is a 316 liquid cooling pipe used for?

This is designed to transport coolant in thermal management systems. It is widely used in AI servers, data centers, battery energy storage systems, industrial machinery, and precision equipment.

2. Why choose 316 stainless steel instead of 304 stainless steel?

316 stainless steel contains molybdenum, which provides better corrosion resistance than 304, especially in humid, chemical, or chloride-containing environments. It is often preferred for long-term cooling system reliability.

3. Is the Square liquid cooling pipe resistant to corrosion?

Yes. 316 stainless steel offers excellent resistance to rust, oxidation, and many industrial cooling fluids. However, coolant quality and maintenance are still important for maximum service life.

4. Can the 316 stainless steel square pipes be customized?

Yes. Most manufacturers provide OEM/ODM customization, including pipe diameter, wall thickness, bending angle, length, fittings, and connection types according to drawings or samples.

5. What cooling liquids are compatible with 316 pipes?

They are commonly used with deionized water, water-glycol mixtures, and industrial coolant fluids. The exact compatibility depends on temperature, concentration, and system design.

6. Are 316 stainless steel square pipes suitable for high-pressure systems?

Yes. 316 stainless steel has strong mechanical strength and is suitable for pressurized liquid cooling systems when designed with the correct wall thickness and fittings.

7. Can these pipes be used in AI server or data center cooling systems?

Yes. 316 stainless steel pipes are increasingly used in modern liquid-cooled AI racks, CDU systems, and high-density data centers because of their cleanliness, durability, and leak resistance.

8. How do you prevent leaks in a liquid cooling pipe system?

Leaks can be reduced through precision bending, quality welding, reliable fittings, pressure testing, and proper installation. Many suppliers offer 100% leak testing before shipment.

9. What surface finishes are available for 316 cooling pipes?

Common finishes include polished, pickled, passivated, brushed, and custom treated surfaces depending on appearance and corrosion protection requirements.

10. How long is the delivery time for custom 316 liquid cooling pipes?

Delivery time depends on order quantity, design complexity, and stock availability. Standard products may ship quickly, while customized assemblies usually require additional production time.

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