Honed Tube

Your Professional Honed Tube Supplier

Our goal is to become your reliable partner in the honed tube in China. Founded in 2005, Jiangsu YingNaisi is a specialized manufacturer focusing on precision cold-drawn steel tubes and hydraulic cylinders. We are committed to applying advanced manufacturing technologies and strict quality control standards to every product. Our products are quality-assured, making us a dependable choice for long-term cooperation.

Why Choose Us

Advanced Production Equipment:

The company is equipped with 18 CNC machining centers, 5 automatic welding production lines, 2 cylinder component cleaning production lines, 2 assembly production lines, 4 performance testing benches, and 2 painting production lines, with an annual output of 50,000 hydraulic cylinders.

Our Services:

We provide hydraulic cylinder installation and commissioning support: remote or on-site engineering guidance for system integration, free replacement or repair for non-human-caused damage, and regular follow-up on equipment performance and preventative maintenance recommendations.

Our Production Capacity:

Annual sales of precision cold-drawn tubing exceed 8,000 tons, and annual sales of hydraulic cylinders exceed 20,000 units.

Quality Control:

Our products are manufactured strictly according to international standards, using high-quality materials to ensure superior strength and durability. Each tube undergoes a special heat treatment process to further enhance its mechanical properties and wear resistance.

Advantages of Honed Tube

01.

Excellent dimensional accuracy:

This ensures a perfect fit in hydraulic systems.

02.

Smooth interior surface:

Minimizes friction, enhancing the efficiency of fluid movement.

03.

High resistance to pressure and wear:

Makes them durable and reliable.

04.

Often made from seamless steel:

Providing strength and longevity.

Specification of SF6 Gas Test

Delivery condition	Cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	Elongation A5%	Rm MPa	ReH Mpa	Elongation A5%
C20	≥550	≥5	≥520	≥375	≥15
CK45	≥645	≥5	≥600	≥520	≥10
Q355B	≥640	≥5	≥600	≥520	≥14
Q355D	≥640	≥5	≥600	≥520	≥14
E355(ST52)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥520	≥15

Features of Honed Tube

This treatment results in tensile strengths ranging from 520 MPa to over 600 MPa, with yield strengths between 375-520 MPa depending on the material grade, providing excellent resistance to deformation under high pressure conditions.

The honing process itself removes minor imperfections from the tube's inner surface and creates a cross-hatch pattern that facilitates optimal lubrication and seal performance. For even higher precision requirements, skived and roller burnished (SRB) technology is employed, achieving surface roughness values as low as Ra 0.1-0.4 μm compared to standard honed finishes of Ra 0.4-0.8 μm.

Application of Honed Tube

Hydraulic Cylinders: Used as the cylinder body that houses moving pistons and hydraulic fluid.

Pneumatic Systems: Employed in air-powered devices where a consistent bore is crucial.

Construction Equipment: In machines such as cranes, bulldozers, and backhoes for fluid-powered movement.

Automotive Industry: Applied in shock absorbers and suspension systems for smooth and controlled operation.

Manufacturing:

Used in presses and injection molding machines where repeated, precise movement is necessary.

Production Process of Honed Tube

01.

Raw Material Selection:

Tubes are crafted from strong and corrosion-resistant materials like carbon steel, alloy steel, or stainless steel.

02.

Cold Drawing:

The raw tube is cold drawn to improve surface finish and increase material strength. This also brings the tube closer to the required final size.

03.

Honing:

Using abrasive stones or tools, the tube’s inner surface is ground to a smooth and precise finish. This step eliminates surface defects and produces a consistent bore.

04.

Inspection:

Each honed tube is tested for dimensional accuracy, roundness, and surface quality to verify its readiness for industrial use.

Processing Form of Honed Tube

Processing form	I.Dmm	Length	Straightness	I.D tolerance	I.D Roughness (RA)
Honed	40-500	≤12M	0.5-1/1000	H8-H9	0.4-0.8um
SRB	50-250	≤12M	0.5-1/1000	H8	0.1-0.4um

Other Service of Honed Tube

Package	Tray
Shipping	Sea/Express
Payment	We accept T/T and L/C. For samples or small trial orders

FAQ

Q: What is suitable to hone tubing?

A: Suitable to hone mechanical tubing is produced from either Cold Drawn Seamless (CDS) Tubing or drawn over mandrel (DOM) tubing. Suitable to Hone Tubing is intentionally produced with an oversized wall thickness, which is intended to be honed to a smooth finish ID for cylinder applications.

Q: What is the surface roughness (Ra) of a honed tube?

A: Typically, the surface roughness of a high-quality honed tube is Ra ≤ 0.2~0.4 µm. Some specialized pneumatic or medical applications may require an even smoother finish (Ra ≤ 0.1 µm).

Q: What is the size range of honed tubes?

A: Honed tubes commonly come in a range of sizes: Internal Diameter (ID): 25 mm to 600 mm (or more). Wall Thickness: 2 mm to 50 mm. Lengths: Standardly available in 3 to 12 meters.

Q: What materials are used for honed tubes?

A: Honed tubes are typically made from carbon steel (ST52.3, SAE 1020, 1045), alloy steel (4140, 27SiMn), or stainless steel (304, 316) for corrosive environments.

We are one of the most professional honed tube manufacturers and suppliers in China, also support customized service. We warmly welcome you to buy bulk honed tube in stock here from our factory. Quality products and low price are available.