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Seamless Stainless Steel Hollow Wire for Oil & Gas, Instrumentation & Precision Engineering

This product is produced with patented technology. Its flatness and intergranular corrosion resistance are excellent. The size of the inner hole and outer diameter are uniform, which ensures that the internal cooling liquid flows evenly and fully. It also has excellent mechanical properties.

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Technical Specifications

Technical Specifications
Item	Specification
Product Name	Stainless Steel Hollow Wire
Material	304 / 316 / 316L Stainless Steel
Type	Seamless / Welded (optional)
Outer Diameter (OD)	0.5 mm – 10 mm
Inner Diameter (ID)	0.2 mm – 8 mm
Wall Thickness	0.1 mm – 2.0 mm
Length	100 mm – 6000 mm / Coil or Straight
Surface Finish	Bright / Polished / Pickled
Tolerance	±0.01 mm – ±0.05 mm
Tensile Strength	Standard industrial grade (high strength)
Corrosion Resistance	Excellent resistance to acids, alkalis, and seawater
Processing Method	Cold drawing / Precision extrusion
Condition	Annealed / Hard / Semi-hard
Packaging	Standard export packing or customized
Application	Instrumentation, Oil & Gas, Medical, Hydraulic systems

Application

This product is widely used in high-performance thermal management and electrical conduction systems where efficient cooling and high reliability are required, including:

High-efficiency electric motors with liquid cooling systems

High-power generators and specialized electrical equipment

Aerospace and defense thermal control systems

Rail transit traction motors and propulsion systems

Industrial equipment requiring internal cooling circulation

Energy systems operating under high load and continuous duty conditions

FAQs

Q1: What are these hollow conductor products mainly used for?

These hollow conductors are mainly used in high-power electrical systems requiring internal cooling, such as electric motors, generators, traction systems, and industrial equipment with water or oil cooling structures.

Q2: What cooling media can be used inside the hollow conductors?

The products are compatible with common cooling media such as water, oil, and other industrial cooling fluids, depending on the system design and operating conditions.

Q3: What are the main material options available?

The product range includes stainless steel hollow wire, oxygen-free copper hollow wire, and various insulated versions with composite structures such as polyimide F46 film, fiberglass, and polyester insulation systems.

Q4: Can the size and structure be customized?

Yes. Outer diameter, inner diameter, wall thickness, conductor shape (round or flat), and insulation structure can all be customized according to customer technical requirements.

Q5: What are the main advantages of hollow conductor products compared to solid wires?

Hollow conductors provide efficient internal cooling, improved thermal management, higher power density capability, and better stability in high-load continuous operation environments.