Gan Yuan Factory boasts over twenty years of precision machining experience, specializing in the manufacture of various stainless steel sleeves. Equipped with high-precision CNC deep-hole machining centers and coordinate measuring machines, the factory ensures accurate dimensional and geometric tolerances for parts and employs advanced surface treatment processes to optimize performance. We provide core stainless steel sleeves for industrial equipment, renowned for their superior wear resistance, high load-bearing capacity, and reliable long-term stability.
We use premium stainless steel materials to professionally manufacture high-precision, high-durability stainless steel sleeves. Stainless steel possesses excellent wear resistance, high strength, and good high-temperature resistance. Through precision deep-hole machining and professional surface treatment of stainless steel, we achieve a balance between excellent dimensional stability, extremely high structural strength, and ultra-long service life, making it ideal for manufacturing connection and support components in harsh environments, under high loads, and with stringent requirements for precision retention.

304 Stainless Steel Sleeve - Special Protective Connection Pipe for Mechanical Equipment
Each sleeve is precision-machined to ensure internal hole dimensional accuracy, surface finish, and coaxiality with the external diameter. Optimized wall thickness design and strict tolerance control ensure the accuracy and reliability of the sleeve as a positioning, guiding, or connecting component under high-speed, high-load operation, effectively improving the overall rigidity and stability of the equipment.
The inherent wear resistance and high strength of stainless steel, combined with the selection of high-performance stainless steel and scientific heat treatment processes, enable the sleeve to withstand extreme loads and resist deformation, ensuring long-term maintenance-free operation of the equipment.

Professional Process, Guaranteed Quality: We utilize multi-axis CNC deep hole drilling and boring, precision grinding, and automated production lines to ensure that every stainless steel sleeve meets stringent geometric accuracy and performance requirements. Through professional process simulation and stress control, combined with targeted heat treatment and surface passivation, we achieve the optimal balance between dimensional stability, structural strength, and wear resistance. During the manufacturing process, we pay particular attention to the consistency of inner hole quality, straightness, cylindricity, and surface corrosion resistance treatment.
We are committed to providing highly reliable stainless steel sleeve solutions for industries such as machinery, hydraulics, automation, and chemicals through advanced materials science, special processing technology, and rigorous quality management. From wear resistance and mechanical analysis of materials and structural design to precision deep hole machining and surface protection, every step reflects our professional pursuit of enduring precision and extreme reliability, providing core guarantees for the long life, high precision, and stable operation of equipment in harsh environments.
We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of market tempering and exploration, it has high-quality technical management personnel, experienced designers, R&D personnel and a perfect company management system cnc precision.
5-axis CNC workshop
Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment cnc precision: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc. 2.5-dimensional detection equipment 
We specialize in the precision manufacturing of stainless steel bushings, strictly adhering to the ISO 9001 quality management system. We are committed to deeply integrating multi-axis precision turning, deep hole machining, and mirror polishing processes with the superior properties of stainless steel. We provide customized bushing solutions with high dimensional accuracy, excellent coaxiality, outstanding surface finish, and superior wear resistance.

cnc precision surface treatment
For surface treatment, our suppliers have been working with us for many years. They have rich experience and are familiar with all the quality requirements of each other. The quality is stable and more guaranteed. Such as: heat treatment, spray painting, powder coating, blackening, silver/gold plating, electrolytic polishing, nitriding, phosphating, nickel/zinc/chromium/TiCN plating, anodizing, polishing, passivation, sandblasting, galvanizing, heat treatment , hardening, laser marking, etc. according to customer requirements. Aluminum alloy surface oxidation
Packaging Details

Q1: Where can I get product & price information?
A1: Send us an inquiry e-mail, we will contact you once we received your mail.
Q2: How long will I get the sample?
A2: Depends on your specific items, within 3-7 days generally.
Q3: What kinds of information do you need for a quote?
A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.
Q4: What are the payment terms?
A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.
Q5: How to deliver the goods?
A5: We deliver the products by courier company.
Q6: Are you a trading company or factory?
A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.
Q7: What shall we do if we don't have drawings?
A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.
Q8: Can we get some samples before mass production?
A8: Absolutely yes.
Q9: Will my drawings be safe after sending them to you?
Q10: Is it possible to know the operation status of my products without visiting your company?
A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
Q11: If you make poor quality goods, will you refund?
A11: In fact, we won't take risks to produce poor-quality products. Meanwhile, we manufacture good quality products till you are satisfie