SAE J525 Thick Wall Mild Steel Tube – Alloy Hydraulic Tube for Precision Instruments

Material

SAE J525 tubing is manufactured from high-quality mild carbon steel, processed by electric resistance welding and then fully normalized to achieve uniform grain structure and excellent ductility. It is specifically designed as a hydraulic tube with thick walls to handle pressure applications while ensuring precision and safety.

Specifications

• Standard: SAE J525

• Manufacturing Process: Electric Resistance Welded (ERW), Normalized

• Wall Thickness: Thick wall, per SAE J525 requirements

• Shape: Round tube

• Finish: Smooth, suitable for bending and flaring

Chemical Composition (Typical, wt%)

Mechanical Properties

Key Features

• Excellent formability, bendability, and flare capability

• Uniform grain structure due to full normalization

• High dimensional accuracy and smooth internal surface

• Reliable for hydraulic systems under pressure

• Enhanced safety in precision instruments applications

Applicable Standards

• SAE J525 (North America)

• ASTM A179 / ASTM A513 (USA equivalent options)

• EN 10305-4 (European equivalent)

• JIS G3445 STKM series (Japanese equivalent)

• GB/T 3639 (Chinese equivalent for precision tubes)

Applications

SAE J525 tubes are primarily used in hydraulic and pneumatic systems where safety and precision are critical.

• Automotive Industry: Brake lines, fuel lines, hydraulic power steering systems

• Industrial Machinery: Hydraulic cylinders, fluid power systems, lubrication lines

• Precision Instruments: Measuring and control systems requiring high reliability

• Construction Equipment: Hydraulic lines for excavators, loaders, and cranes

• Aerospace & Marine: Specialized hydraulic control systems

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,

it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.