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Custom CNC Machined 304 Stainless Steel Anti-Rust Valve Body Bushing for Pneumatic Valves
| Place of Origin | GuangDong Dongguan |
| Brand Name | SITUO |
| Certification | ISO9001 & TS16949 |
| Model Number | ST-500015 |
Custom CNC machined stainless steel bushing
,304 stainless steel valve body bushing
,Anti-rust pneumatic valve bushing
Custom CNC Machined 304 Stainless Steel Valve Body Bushing is a high-precision inner liner specifically designed for pneumatic valves and fluid control equipment. Manufactured from genuine industrial 304 stainless steel using integrated CNC turning and milling processes, this valve sleeve delivers exceptional anti-rust and anti-corrosion performance, smooth inner wall surfaces, high coaxiality, and low friction characteristics.
As a core wear-resistant and sealing component within the valve body, it effectively reduces friction loss during valve core reciprocating movement, enhances valve opening and closing sensitivity, and ensures stable air tightness. Suitable for humid, corrosive, and high-frequency working conditions, it supports both standard stock supply and custom OEM processing for various pneumatic and fluid control valves.
Unlike ordinary carbon steel parts, 304 stainless steel material provides outstanding oxidation resistance, rust resistance, and acid-base corrosion resistance. It operates reliably in humid, oily, and slightly corrosive environments without rusting, jamming, or peeling. With excellent toughness and wear resistance, the bushing maintains stable dimensional accuracy under long-term high-frequency movement, significantly extending the service life of the entire valve assembly.
Utilizing full-process CNC precision machining, every bushing undergoes strict control of inner diameter, outer diameter, length, roundness, and concentricity. The mirror-smooth, burr-free inner wall ensures ultra-low roughness, enabling smooth valve core sliding without stalling or abnormal noise. Uniform assembly clearance effectively prevents air leakage and pressure instability, improving overall pneumatic control accuracy and operational stability.
With natural wear-resistant properties of 304 stainless steel and fine inner surface treatment, the bushing minimizes friction and mechanical noise during frequent valve operation. It maintains consistent fitting precision and durable sealing performance under alternating pressure and repeated switching, addressing common defects of ordinary sleeves such as easy wear, air leakage, and short service life.
We provide comprehensive non-standard customization according to customer drawings and samples, including custom inner/outer diameter, length, steps, chamfers, grooves, and special end structures. No molds required, supporting prototype trial production, small-batch orders, and large-scale mass production. Perfectly matches replacement and customized demands for various domestic and imported pneumatic valves and fluid control valve bodies.
- Wear-resistant and sealing inner sleeve for industrial pneumatic valve bodies
- Precision liner fittings for fluid control equipment in humid & corrosive environments
- Bushing components for automated air control valves, pressure regulators and solenoid valves
- Stainless steel wear parts for precision fluid pipeline control valves
- Custom replacement bushing parts for new and old valve body maintenance
Every 304 stainless steel valve body bushing undergoes comprehensive dimensional inspection, roundness testing, roughness detection, and assembly fitting tests before delivery. Standard sizes are well-stocked for fast shipment, and one-stop CNC custom precision machining is available. We supply high-precision, corrosion-resistant, and long-lasting stainless steel valve components for automation, fluid control, and pneumatic equipment industries worldwide.
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.
Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We operate Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, enabling us to effectively provide customers with optimal technical solutions.
Our company employs 300 personnel, including 20 technicians, 10 engineers, and 15 quality control specialists. We maintain over 300 pieces of equipment.
Our facility implements 8S management and has achieved ISO9001 and TS16949 automotive certifications.
Our customer portfolio includes leading companies such as Foxconn, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia
| Main Products | Stainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners |
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| Business Type | Factory / Manufacturer |
| Services | CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service |
| Materials | Aluminum: AL 6061-T6, 6063, 7075-T, etc. Stainless Steel: 303, 304, 304L, 316L, 316F, 630, 410, 420, 430, etc. Steel: 4140, Q235, Q345B, 20#, 45#, 1215, 12L14, 1144, 1006, 1008, 1010, 1015, 1018, 10B21, 1035, 1065, etc. Alloy Steel: 5140, 4135, 4140, 3435, 5120, 415, 435, 440, etc. Titanium: TA1, TA2/GR2, TA4/GR5, TC4, TC18, etc. Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90), C27000, C51900, C11000, C3604, H62, H65, etc. Other: Copper, bronze, Magnesium alloy, Delrin, POM, Acrylic, PC, etc. |
| Finishes | Sandblasting, Anodize color, Blackening, Zinc/Nickel Plating, Polish, Powder coating, Passivation PVD, Titanium Plating, Electrogalvanizing, electroplating chromium, electrophoresis, QPQ (Quench-Polish-Quench), Electro Polishing, Chrome Plating, Knurl, Laser etch Logo, etc. |
| Drawing Formats | STEP, STP, GIS, CAD, PDF, DWG, DXF, etc. or samples |
| Tolerance | ±0.01mm ~ ±0.05mm |
| Surface Roughness | Ra 0.1~3.2 |
| Inspection | Complete inspection lab with Micrometer, Optical Comparator, Caliper Vernier, CMM, Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge |
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