Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Introducing our meticulously crafted stainless steel round non-pressure manhole, the epitome of safety and durability for tanks, vessels, and pipelines. Engineered to provide a seamless, corrosion-resistant access point for inspection and maintenance, this manhole is constructed from the finest 304/316 stainless steel. Revel in its outstanding strength and resilience against harsh conditions, making it a perfect choice for industries such as food processing, chemicals, pharmaceuticals, and water treatment. The design adheres to standard atmospheric vessel requirements with a circular structure that guarantees exceptional sealing performance, effectively preventing leaks.
Key Features
Premium Material
- Fabricated from the highest-grade **304/316 stainless steel**, renowned for its superior corrosion resistance, exceptional high-temperature tolerance, and enduring longevity.
Leak-Proof Seal
- Equipped with a precision-engineered flange, featuring **silicone/fluororubber gaskets** and a robust multi-bolt locking mechanism, ensuring an uncompromising **zero-leak guarantee**.
Quick & Easy Operation
- Thoughtfully designed lightweight structure with versatile **hinged or bolted cover options**, facilitating **single-person access** and minimizing operational downtime.
Safety First
- Enhanced safety with optional **anti-fall mesh** (load capacity: 200kg) and a **secure anti-slip surface finish**, ensuring safe operation in all environments.
Fully Customizable
- Available in **DN400-DN800** with support for custom sizes, meeting various **flange standards** (ANSI, DIN, JIS). Personalize with additional **accessories** such as sight glass and vent valve to suit your specific needs.
Applications
- Oil & Gas: Perfect for storage tanks and reactors
- Food & Pharma: Ideal for hygienic vessel cleaning and inspection
- Water Treatment: Essential for sewage tanks and reservoir maintenance
- Marine & Power: Optimal for boiler maintenance and pressure vessel access
Why Choose Us
✓ Benefit from our ISO-Certified manufacturing processes
✓ Enjoy peace of mind with our 1-year warranty and lifetime support
✓ Experience swift delivery and comprehensive OEM/ODM services
✓ Avail free technical consultation and precise CAD drawings
Product Parameters
Material: 304/316 SS (other grades available) |
Size Range: DN400-DN800 (customizable) |
Pressure Rating: Non-pressure (Atmospheric, -0.02MPa to 0.02MPa) |
Sealing Standard: GB/T compliant, leak-tested |
Temperature Range: -20°C to +300°C (gasket material options) |
Detailed Photos






About US






FAQ
Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases
Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.
Q:How can you guarantee the quality of products?
A:First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every flange or fitting we sell is qualified.
Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.
Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.
Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing
Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.
Q:Do you have a minimum quantity of the products?
A:No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.
Q:Where are the main markets for your products?
A:We hope to make business with companies from all over the world. And for now, our flanges and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.
Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.