Cold Drawn Tube

 

Wuxi Shenlu Hydraulic Machine Parts Co., Ltd. specializes in manufacturing high-precision cold drawn tubes, also referred to as seamless cold drawn tubes or precision cold drawn steel tubes. Produced through cold drawing technology, our tubes feature excellent dimensional accuracy, smooth surface finish, and superior mechanical properties. These characteristics make them ideal for hydraulic systems, automotive applications, and various industrial machinery.

 

 

• Superior Dimensional Accuracy – Each cold drawn tube is manufactured with tight tolerances, ensuring consistent wall thickness and precise outer and inner diameters.
• Excellent Surface Finish – The cold drawing process produces a smoother surface compared to hot rolled tubes, reducing friction and improving sealing performance.
• Enhanced Mechanical Strength – Cold drawing improves tensile strength, hardness, and fatigue resistance, making the tube suitable for high-pressure applications.
• High Straightness & Roundness – Ensures excellent performance in hydraulic and pneumatic systems, minimizing wear on seals and pistons.
• Versatility in Applications – Available in a wide range of sizes and materials, suitable for both standard and customized requirements.

 

 

Our precision cold-drawn steel tubes are widely used in:

• Hydraulic cylinders and pneumatic systems
• Automotive industry (shock absorbers, steering systems, drive shafts)
• Mechanical engineering and industrial equipment
• Construction machinery and agricultural equipment
• Aerospace and energy sectors

These tubes are essential in applications where precision, strength, and durability are required.

 

 

Parameter	Specification
Product Name	Cold Drawn Tube
Material	Carbon Steel / Alloy Steel / Stainless Steel
Outside Diameter (OD)	10mm – 500mm (customizable)
Inside Diameter (ID)	8mm – 480mm (customizable)
Wall Thickness	1mm – 50mm
Length	Up to 12 meters (cut-to-length available)
Tolerance	H8 – H9
Surface Roughness (Ra)	≤ 0.8μm
Properties	High tensile strength & hardness
Standards	ASTM, DIN, EN, GB

 

 

At Wuxi Shenlu Hydraulic Machine Parts Co., Ltd., we provide tailored seamless cold drawn tube solutions:

• Material Choices: Carbon steel, alloy steel, stainless steel.
• Size Customization: Wide range of OD, ID, and wall thicknesses according to customer drawings.
• Surface Treatments: Phosphating, chrome plating, or anti-corrosion coatings.
• Precision Requirements: Custom tolerances available for high-performance applications.

Cut-to-Length Service: Tubes can be supplied in specific lengths, ready for direct use.

 

 

1. Quality Control

All cold-drawn tubes are manufactured under ISO-certified production standards. Each tube undergoes strict inspection for dimensional accuracy, mechanical strength, and surface finish before delivery.

2. Packaging & Logistics

• Protective oil is applied before packing to prevent corrosion.
• Bundled securely with steel straps or packed in wooden cases.
• Flexible shipping options: sea freight, air cargo, or express delivery.

3. After-Sales Service

We provide technical support, prompt communication, and full after-sales service. If any quality issues arise, we ensure replacement or refund as part of our commitment to long-term customer satisfaction.

 

 

 

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