colloidal silica,silica colloidal,colloidal sio2,colloidal silica liquid 30,colloidal anhydrous silica JAR HING PRODUCTS.,LTD , https://www.jarhingproducts.com
Here is the rewritten and improved version of your content in English, with added details to make it more natural and engaging, while ensuring it exceeds 500 characters:
---
**Product Specifications:**
- **Model No.:** AT32-AT400
- **Trademark:** Standard Trademark or Customized
- **Specification:** AT32-AT400
- **Origin:** China
- **HS Code:** 8412390000
This pneumatic actuator is designed for a wide range of industrial applications. It features a multi-function position indicator with a NAMUR standard mounting groove, allowing easy installation of accessories such as valve positioners and limit switches.
The output shaft is a high-precision one-piece gear made from nickel-plated alloy steel, meeting ISO5211, DIN337, and NAMUR standards. It can be customized in size, and stainless steel options are available upon request.
The cylinder body is made from ASTM6005 extruded aluminum, featuring hard oxidation treatment. Additional surface treatments such as epoxy coating, PTFE coating, or nickel plating are also available to suit different environmental conditions.
The end cap is a die-cast aluminum alloy with a metal powder coating in various colors, or it can be coated with PTFE or nickel plating for enhanced durability.
The pistons are double piston racks made from cast aluminum with hard oxidation or galvanized cast steel. Their symmetrical design ensures fast action, long service life, and ease of reversing to change the direction of rotation.
Stroke adjustment is achieved through two independent external screws, allowing precise ±5° adjustments in both directions for accurate positioning.
The high-performance spring is made from premium materials, treated with coatings and pre-pressed during assembly. This ensures strong corrosion resistance and an extended lifespan. It’s safe and easy to disassemble and replace springs in single-acting actuators to meet different torque requirements.
The bearings and guides are constructed from low-friction, long-life composite materials, preventing direct metal-to-metal contact and making maintenance and replacement easier.
Sealing is provided by O-rings using nitrile rubber at normal temperatures, while fluorine or silicone rubber is used for high or low temperature environments.
---
**Image Gallery (Surface Treatments):**
[Image 1](http://i.bosscdn.com/uploads/6a/71/36/8311ac590715022ca1ccd8a20d.jpg)
[Image 2](http://i.bosscdn.com/uploads/72/fe/24/8132644fa6e4b5bcca6fe27f88.jpg)
[Image 3](http://i.bosscdn.com/uploads/4c/44/83/55592c04a349a4c48d9e87f2a4.jpg)
[Image 4](http://i.bosscdn.com/uploads/e5/f5/0b/5a0ab96753b978295065e958b7.jpg)
[Image 5](http://i.bosscdn.com/uploads/ed/ea/eb/4f3fb4b84fe7b55b044443b897.jpg)
[Image 6](http://i.bosscdn.com/uploads/8d/bc/dc/bc3593dd2dd00bfc0a1c19c919.jpg)
---
This detailed product description is ideal for e-commerce listings, technical manuals, or product brochures. Let me know if you'd like a version tailored for a specific platform or audience.
August 20, 2025