Q355D Skived and Rolled Tube

Q355B Skived and Rolled Tube, also known as Q355B SRB Tube, is a high-performance seamless steel tube designed for hydraulic cylinder applications. Produced using advanced skiving and roller burnishing technology, this tube offers exceptional surface finish, dimensional accuracy, and mechanical strength.

Model:Q355D
Brand:EAST AI
Material:Q355D
Length:Max. 13m
ID Tolerance:H8~H10
Straightness:0.5/1000
Application:Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems
Packing:Wooden cases
Roughness:≤0.4u

Product Description

Advantages of Q355B Skived and Rolled Tube

Superior Surface Finish

Achieves roughness up to Ra 0.2–0.4 μm, minimizing seal wear.

High Dimensional Accuracy

Tight tolerance on ID, straightness, and roundness ensures easy cylinder assembly.

Strong Mechanical Properties

Q355B steel grade provides excellent yield strength and impact resistance.

Extended Hydraulic Cylinder Life

Smooth bore reduces friction and enhances efficiency.

Corrosion Protection

Anti-rust oil coating and protective packaging ensure long-term storage without damage.

Cost-Effective for Bulk Supply

Available in large stock with flexible length cutting services.

Versatility

Compatible with hydraulic cylinders, pneumatic cylinders, lifting equipment, and construction machinery.

Q355B Skived and Rolled Tube Production Process

The production of Skived and Roller Burnished Tubes follows a precise sequence to guarantee accuracy and quality:

Raw Material Selection

High-quality Q355B seamless steel tubes are selected.
Cold Drawing

Tubes are cold drawn to achieve required size and improve strength.
Heat Treatment

Stress relieving and normalization improve toughness and durability.
Straightening

Correcting bending and ensuring straightness.
Skiving

Inner surface is cut to remove material and achieve initial tolerance.
Roller Burnishing

Surface is compressed to achieve mirror-like finish and high dimensional accuracy.
Inspection

Bore size, roundness, surface finish, and straightness are checked.
Cleaning & Anti-Rust Protection

Tubes are cleaned and coated with protective oil.
Packaging

Wooden cases or steel frames with plastic end caps ensure safe delivery.

This process ensures that Q355B SRB Tubes meet the strictest hydraulic cylinder requirements.

Applications of Q355B Skived and Rolled Tube

Q355B SRB Tubes are widely used in hydraulic and mechanical engineering fields, including:

Hydraulic Cylinders

Construction machinery, agricultural equipment, mining equipment.

Pneumatic Cylinders

Air compressors and automation systems.

Lifting Equipment

Forklifts, aerial work platforms, cranes.

Construction Machinery

Excavators, bulldozers, loaders.

Industrial Equipment

Press machines, injection molding machines.

Marine & Offshore

Hydraulic systems for shipbuilding and offshore drilling platforms.

Factory Stock & Supply Capability

Our factory maintains a large inventory of Q355B Skived and Rolled Tubes, ensuring fast delivery and flexible supply for both small and bulk orders.

Regular Sizes in Stock

Standard dimensions are always available.

Customized Processing

Cutting, machining, and special size production.

High Capacity

Advanced skiving and roller burnishing machines enable monthly production of thousands of tons.

Global Shipping

Reliable packing methods guarantee safe transport to overseas distributors and stockists.

Quality Control & Testing

To ensure top quality, every batch of Q355B SRB Tubes undergoes rigorous inspections:

Dimensional Tolerance Check

Outer diameter, inner diameter, and wall thickness.

Surface Roughness Measurement

Ensuring Ra ≤ 0.4 μm.

Straightness Test

Ensuring tubes meet ISO standard.

Ultrasonic Testing (UT)

Detecting internal defects.

Hydraulic Pressure Test

Ensuring safe performance under working pressure.

Salt Spray Test (Optional)

For corrosion resistance evaluation.

Certificates

Our Q355B Skived and Rolled Tubes are certified by international standards and classification societies, ensuring trust and reliability for global customers:

ISO 9001:2015 Quality Management System

GL – Germanischer Lloyd Approval of Material Manufacturers (AMM)

Mill Test Certificate (MTC) according to EN 10204 3.1

Third-Party Inspection – SGS, BV, TUV available on request

Why Choose Us as Your Supplier

Over 18 Years of Hydraulic Tube Production Experience

Advanced Honing, Skiving, and Roller Burnishing Equipment

Large Inventory for Fast Delivery

Strict Quality Control with Full Traceability

Competitive Pricing for Distributors and Contractors