Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Introducing our meticulously engineered stainless steel round non-pressure manhole, a pinnacle of safety and corrosion resistance, ideal for tanks, vessels, and pipelines. With unparalleled access for inspection and maintenance, it is expertly crafted from durable 304/316 stainless steel to withstand the rigors of harsh environments. Perfectly suited for industries like food processing, chemical production, pharmaceuticals, and water treatment, this manhole is designed to meet standard atmospheric vessel requirements. Its circular design ensures an outstanding seal, effectively preventing leaks and maintaining operational integrity.
Key Features
Premium Material
- Crafted with top-grade **304/316 stainless steel**, this manhole boasts impressive corrosion resistance, high-temperature endurance, and exceptional longevity.
Leak-Proof Seal
- Our precision-engineered flange, equipped with **silicone/fluororubber gaskets** and a robust multi-bolt locking system, ensures an absolute **zero-leak guarantee**.
Quick & Easy Operation
- Enjoy seamless operation with a lightweight design featuring **hinged or bolted cover options** for effortless **single-person access** and minimized downtime.
Safety First
- Elevate safety standards with our optional **anti-fall mesh** (capable of supporting up to 200kg) and a secure **anti-slip surface finish**.
Fully Customizable
- Tailor your solution with sizes ranging from **DN400-DN800** (custom sizes are welcome), various **flange standards** (ANSI, DIN, JIS), and essential **accessories** like sight glass and vent valve.
Applications
- Oil & Gas: Ideal for storage tanks and reactors.
- Food & Pharma: Perfect for hygienic vessel cleaning and inspection.
- Water Treatment: Suitable for sewage tanks and reservoirs.
- Marine & Power: Essential for boiler maintenance and pressure vessel access.
Why Choose Us
✓ Enjoy peace of mind with our ISO-Certified manufacturing.
✓ Benefit from a 1-year warranty and lifetime support.
✓ Experience fast delivery and comprehensive OEM/ODM services.
✓ Access free technical consultation and detailed 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.