Product description:

The honing pipe is a type of seamless steel pipe that has undergone honing processing for high precision and excellent surface quality. It is not a special material but a steel pipe product that achieves outstanding performance through specific advanced processing techniques.

An Oil cylinder honing tube—also known as a hydraulic Cylinder honing tube or honed cylinder barrel—is a precision-engineered seamless steel tube designed for use in hydraulic oil cylinders. It serves as the main pressure vessel in which hydraulic oil acts to generate linear motion. The honing process ensures an ultra-smooth inner surface, high dimensional accuracy, and superior wear resistance, all of which are critical for the efficiency, reliability, and longevity of hydraulic systems.

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Material and Structure

Oil cylinder honing tubes are typically manufactured from high-quality carbon steel and alloy steel grades such as ST52, E355, AISI 1020, AISI 1045, and AISI 4140. These materials offer excellent strength, machinability, and resistance to fatigue under high pressure. For specialized applications in corrosive or marine environments, stainless steel grades such as 304, 316, or 420 can also be used.

The tube’s inner surface is honed or skived and roller-burnished to achieve an exceptionally smooth finish, usually with a surface roughness of Ra ≤ 0.2 μm. This fine finish minimizes friction between the piston seals and the tube wall, ensuring optimal sealing performance and reducing wear during continuous operation.

Manufacturing Process

The manufacturing of an oil cylinder honing tube involves multiple precision-controlled stages to guarantee mechanical strength and surface perfection:

Material Selection: Choose seamless cold-drawn or hot-rolled steel tubes with uniform composition and high purity.

Cold Drawing: Enhances dimensional accuracy and mechanical properties.

Heat Treatment: Includes normalizing, quenching, and tempering to increase hardness, tensile strength, and ductility.

Honing or Skiving & Roller Burnishing: Produces a smooth internal surface and precise diameter tolerance.

External Machining (Optional): The outer surface may be turned or polished for better assembly fit.

Surface Treatment: Tubes can be oiled, phosphate-coated, or plated to enhance corrosion resistance.

Quality Inspection: Each tube undergoes strict testing for straightness, surface finish, dimensional precision, and mechanical strength.

Key Features and Advantages

High Dimensional Accuracy: Inner diameter tolerance can reach H7 or H8 for precise piston fit.

Smooth Inner Surface: Low friction and superior sealing performance extend component lifespan.

Excellent Strength and Fatigue Resistance: Designed for high-pressure hydraulic applications.

Enhanced Corrosion Resistance: Optional coatings or stainless steel materials available.

Consistent Straightness and Roundness: Ensures stable piston movement and uniform wear.

Extended Service Life: Reduced maintenance costs and enhanced operational reliability.

Grinding tube production process:

Applications:

The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy. It is the core executive component in the hydraulic system. The hydraulic cylinder uses hydraulic oil to drive the piston to move, converting hydraulic energy into linear reciprocating motion. When the hydraulic oil enters the cylinder barrel, it pushes the piston rod to extend or retract, completing the predetermined action. The direction and speed of its movement are regulated by the hydraulic control system. The hydraulic cylinder consists of a cylinder barrel, cylinder cover, piston and piston rod, sealing device, and buffering device. According to its structure, it can be classified as piston type, plunger type, multi-stage telescopic sleeve type, and gear rack type. Hydraulic cylinders are widely used in machine tools, construction machinery, vehicles, and other fields, featuring a simple structure and smooth movement.

Oil cylinder honing tubes are widely used in hydraulic systems that operate under high pressure and continuous motion. Typical applications include:

Hydraulic cylinders for construction and mining equipment (excavators, loaders, cranes)

Agricultural machinery such as harvesters, tractors, and hydraulic presses

Industrial automation systems and robotic equipment

Marine and offshore hydraulic cylinders for steering and lifting mechanisms

Injection molding machines, machine tools, and industrial presses

Aerospace and defense hydraulic systems requiring extreme reliability

In all these fields, oil cylinder honing tubes ensure stable performance, low friction, and long service life under high-pressure oil flow.

Company profile:

Since its establishment in 2014, Wuxi Hengxin Zhicheng Co., Ltd. has rapidly grown into a leading enterprise in the steel manufacturing industry. We focus on the research, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders, and are committed to providing customers with high-quality, customizable products that fully meet diverse application needs.

Our products are exported to global markets such as the Middle East, South America, Africa, and Southeast Asia, and are highly trusted by large purchasers and customers in the steel industry. We always prioritize quality, reliability and customer service, and attach great importance to establishing long-term and stable cooperative relationships with customers. We provide each customer with tailor-made solutions.

We continuously promote technological innovation and improve service capabilities and production efficiency. Through an efficient online platform, you can browse our best-selling products at any time and communicate with the sales and support teams in real time to conveniently obtain the information you need. We sincerely invite partners from all countries to visit, exchange and provide guidance, and jointly explore more possible cooperation opportunities!

Certification:

Packaging and Transportation:

【Package standard】

We use steel bands to tightly package the products into hexagonal bundles. The structure is stable and not prone to deformation. Each bundle is equipped with two high-strength nylon straps to ensure the safety and convenience of the lifting operation.

To meet various maritime transportation needs, we offer a range of customized packaging options, including full coverage with oilcloth, moisture-proof wooden boxes, and high-strength protective frame packaging, to ensure the maximum safety of goods during transportation.

【Guarantee for transportation】

We offer 20-foot and 40-foot standard container transportation services. Each container can carry up to 25 tons of goods and we can accept trial orders with a minimum of 5 tons. This allows for flexible adaptation to your purchasing scale. All packaging complies with maritime shipping standards to ensure that the goods are delivered to the destination efficiently and safely.

Why us?

We focus on the research, development, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders. We have a complete production chain and an advanced equipment system, including piercing machines, cold drawing machines, hot rolling machines, high-precision flaw detection and testing equipment. The company has passed multiple authoritative certifications such as ISO9001, API, SGS, CCS, DNV, ABS, CE, RoHS, etc., ensuring that each product complies with international standards. We are committed to providing customers with high-quality, customizable solutions to meet diverse application needs.

Relying on our own built processing base and modern workshops, combined with multiple branches and storage centers across the country, we have achieved sufficient inventory and efficient logistics coordination, significantly shortening the delivery cycle and ensuring the rapid delivery of orders.

We have established a complete service and support system. After the order is signed, the professional after-sales team can provide timely and safe on-site guidance and technical support to ensure that customers are at ease throughout the process from procurement to use.

FAQ：

1. Do you support customized design and production?

Sure. We have a professional engineering team that can conduct customized design and production with special sizes, control systems or OEM according to your requirements.

2. How fast can you deliver?

In stock sizes, it takes 3-5 days. For customized sizes, it takes 30-35 days.

3. What payment methods do you support?

We support TT payment. Generally, 30% to 50% of the payment is made in advance, and the remaining amount is paid before shipment.

4. Can you provide material certification (MTC)?

Yes, we will provide MTC to you after production is completed to ensure that the material quality meets the standards.

5. What is the minimum order quantity?

Generally, we accept trial orders. The minimum order quantity is 1-3 tons, which can be determined according to different products.