Reliable Stainless Steel Sleeve Manufacturer in China
- Accuracy controllable to ±0.01mm, ensuring smooth and worry-free assembly.
- Supports customized production and quick delivery response.
- Strict testing process to ensure consistent quality in every batch.
- Wear and corrosion resistant for longer life, helping you reduce usage costs.
- Widely applicable to motors, machinery, pipelines, and other applications.
- Regular specifications are in stock, and rush orders can be shipped quickly.
Stainless Steel Sleeve We Expert in

Our 304 and 316L stainless steel sleeves are highly corrosion resistant and can withstand chemical and seawater environments, providing long-term reliable mechanical support and protection for your equipment. They are ideal for use in food processing, pharmaceutical, and chemical piping systems.

DSR’s precision-manufactured plain stainless steel sleeves are designed to effectively protect your shafts and mechanical components from wear and tear. With a machining accuracy of up to 0.01 mm, they ensure a seamless connection, making every connection secure and reliable, ideal for motors and various mechanical devices.

Threaded stainless steel sleeves are strong and resistant to breakage and deformation, and do not require welding or glue. The threaded structure allows for easy installation and keeps parts aligned during assembly, preventing loosening, making them ideal for parts that need to be replaced frequently.

Slotted stainless steel sleeves have precision slots on the sides that allow for fine adjustment of compression or expansion, ensuring that your installation remains stable and reliable even if the hole diameter does not match perfectly, saving time and reducing errors.

Tapered stainless steel sleeves feature a design with one end larger than the other, relying on the tapered surface to fit tightly against the shaft or hole to generate friction and achieve self-locking. You can complete the installation quickly while ensuring that the components are stable and reliable, making them ideal for mechanical shaft connections and pipe transition interfaces.

Stainless steel sleeve anchor bolts fit tightly into concrete or brick wall holes through the wedge design at the end, providing a stable and reliable fixation for your equipment. Corrosion-resistant and not easily deformed, it is ideal for construction projects and heavy machinery installation.

Our stainless steel spacer sleeves maintain a constant spacing between components through precise length and rigid support, allowing parts to automatically align during assembly and reducing wear and tear. Whether it’s machinery, automobiles, or electronic equipment, they make your assembly more accurate and efficient.

DSR’s duplex stainless steel sleeves combine high strength and excellent corrosion resistance to withstand high-stress environments such as tensile, compressive, and vibrational forces, enabling your equipment to operate reliably for the long term in offshore, chemical, oil and gas, and heavy-duty industries.
Why DSR Has 1,000 + Loyal Customers

Tolerances are strictly controlled to ±0.01mm, ensuring seamless assembly with shafts and bolts, ensuring a secure and reliable installation every time and minimizing the risk of rework.

Using high-hardness materials and precision machining, our stainless steel sleeves deliver a smooth and uniform surface, effectively reducing wear even under prolonged friction and high-load operation.

Maintaining stable performance at temperatures up to 600°C, our stainless steel sleeves withstand the harsh conditions of the high-temperature combustion zones of aircraft engines and the long-term thermal cycles of automotive exhaust systems.

Whether used in piping systems, mechanical bearings, or industrial equipment, DSR’s stainless steel sleeves maintain their original strength and surface finish over time, reducing maintenance frequency and replacement costs.

Utilizing advanced four-axis/five-axis machining centers, our sleeves offer superior tensile, compressive, and impact resistance, resisting deformation or cracking, ensuring long-term reliable operation of components.

Precision machined and polished, the surface is smooth, free of burrs or sharp edges. This reduces the risk of wear, improving assembly efficiency and operational safety.

Optimized processing provides moderate hardness and excellent machinability. Drilling, tapping, grooving, and fine grinding are all easily accomplished, ensuring machining accuracy and part integrity.

DSR stainless steel sleeves are precision-engineered with tight tolerances and smooth interface fit, enabling fast and accurate assembly. This reduces manual operation time and improves production efficiency.
How to Choose the Right Stainless Steel Casing Size and Material
The proper choice of casing size and material is essential to ensure long-term, trouble-free operation of your equipment. The following criteria may be helpful:
Choosing the Material Based on the Application Environment
304 Stainless Steel: Great corrosion resistance, best for food processing, pharmaceuticals, and mechanical piping.
316L Stainless Steel: Greater chloride corrosion resistance, best for chemical, seawater, and highly corrosive applications.
Duplex Stainless Steel: The ultimate blend of high strength and high corrosion resistance, recommended for offshore, oil and gas, heavy industry applications.
Choosing the Size Against the Mechanical Interface
Inner Diameter, Outer Diameter, and Length: Choose the appropriate casing size and material according to your shaft, pipe, or component interface size for a tight fit and stable assembly.
Tolerance and Precision: High precision casing offers hassle-free fits and reduces the requirement for rework.
Giving Special Needs Thought
- If your equipment is operated at high temperatures, high wear, or at high forces or loads, choose a material that is heat-resistant, wear-resistant, or high-strength.
- If future secondary operations such as drilling, tapping, or fine grinding will be required, materials that are easy to machine should be used to save tool wear and labor.
Custom Solutions
For unique applications not capable of being satisfied with off-the-shelf sizes, DSR offers dedicated stainless steel sleeve sizes and optimized materials to offer a safe and reliable sleeve for each application.
Threaded sleeves are ideal for applications requiring frequent assembly and disassembly or adjustable connections, such as modular machinery or removable components.
Tapered sleeves achieve self-locking locks through a tight, tapered surface, making installation quick and secure. They are ideal for shaft connections or pipe transitions.
Slotted sleeves are suitable for applications where bore diameters don’t exactly match. Side slots allow for fine-tuned compression or expansion, ensuring a secure installation.
Choosing the right sleeve for your equipment structure and installation requirements ensures stability and reliability.
In most cases, they are. DSR sleeves are machined to an accuracy of up to ±0.01mm and adhere to strict dimensional standards. They are designed with common shafts, pipes, and mechanical interfaces in mind. Even if special dimensions or tolerances are required, we can provide custom solutions to ensure a smooth integration with your existing parts.
DSR stainless steel casings are manufactured from 304, 316L, or duplex stainless steel. Both material and processing comply with international standards such as ISO 9001, and rigorous quality inspections are performed throughout the entire process. Each batch undergoes dimensional, surface, and mechanical inspection to ensure the casing you receive is consistent and safe and reliable.
Yes. The high precision and strength ensure smooth assembly, reducing rework and repairs. Their wear and corrosion resistance extend service life and reduce replacement costs. Their optimized processing design reduces secondary processing and tool wear, improving production efficiency. In short, choosing DSR casings not only ensures stable equipment operation but also effectively reduces overall operating costs.






