EAST AI Hydraulic Manufacturer
Since 2006
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The Q355B Honed Tube is a high-strength precision steel tube specially designed for hydraulic cylinder applications. Manufactured with advanced cold drawing and honing processes, it features exceptional dimensional accuracy, superior toughness, and a smooth internal surface finish. These properties ensure minimal friction, excellent sealing performance, and extended service life of hydraulic systems. Widely used in engineering machinery, lifting platforms, mining equipment, and industrial systems, Q355B honed tubes offer a cost-effective, durable, and reliable solution for demanding hydraulic applications.
Honed Tube
EAST AI
Q355B
Max. 13m
H8 (customizable on request)
0.5/1000
Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems
Wooden cases
≤0.4u
Product Description
Q355B is a low-alloy high-strength structural steel with superior mechanical properties.
Ensures excellent load-bearing capacity for heavy-duty hydraulic cylinders.
Honing process produces a smooth bore surface with low roughness (Ra 0.2–0.8 μm).
Improves sealing, reduces leakage, and increases system efficiency.
Tight ID and OD tolerance with roundness and straightness well-controlled.
Guarantees perfect fit with piston seals and hydraulic components.
Q355B material is easy to weld and machine, reducing manufacturing costs.
Ideal for fabricating custom hydraulic cylinder barrels.
Reduced friction and wear protect seals and extend cylinder lifespan.
High fatigue resistance makes it suitable for long-term use in harsh conditions.
To achieve the superior quality required in hydraulic applications, each Q355B honed tube undergoes a strict production process:
Raw Material Selection
Q355B seamless steel tubes are sourced with certified quality assurance.
Material is tested for chemical composition and mechanical properties.
Cold Drawing
Tubes are cold drawn to refine the microstructure, increase strength, and achieve accurate dimensions.
Heat Treatment
Stress-relieving or normalization improves toughness and dimensional stability.
Boring and Rough Machining
The inner bore is processed to remove defects and prepare for honing.
Honing Process
Multi-step honing ensures precision surface roughness (Ra 0.2–0.8 μm).
Bore roundness and straightness are precisely controlled.
Final Inspection
Each tube is tested for size tolerance, roughness, hardness, and mechanical performance.
The Q355B Honed Tube is widely applied in industries where hydraulic power is critical:
Excavators, loaders, bulldozers, cranes.
Aerial work platforms, scissor lifts, forklift trucks.
Hydraulic supports, drilling machines, dump trucks.
Harvesters, tractors, irrigation systems.
Press machines, hydraulic presses, manufacturing equipment.
Its combination of strength, toughness, and precision makes it an ideal choice for demanding environments.
At EASTAI, we maintain a large inventory of Q355B honed tubes to meet urgent delivery needs of distributors, stockists, and engineering companies.
Multiple OD and ID combinations available.
Tailored solutions for non-standard dimensions.
2,000+ tons of honed tubes.
Stock-ready sizes shipped within days.
Our robust inventory management ensures that partners can minimize downtime and maximize operational efficiency.
To guarantee consistent quality, every tube undergoes rigorous testing:
OD, ID, wall thickness, and straightness measurement.
Ensuring Ra ≤ 0.8 μm.
To confirm material strength and durability.
Verifying sealing and pressure resistance.
Detecting internal or external defects.
For corrosion resistance evaluation.
Our Q355B Honed Tubes comply with international standards and certifications:
These certifications ensure reliability and traceability for engineering projects worldwide.
FAQ
