Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Our stainless steel round non-pressure manhole is designed for tanks, vessels, and pipelines, providing a safe, corrosion-resistant access point for inspection and maintenance. Crafted from 304/316 stainless steel, it delivers exceptional strength and resistance to harsh environments, making it ideal for food processing, chemical, pharmaceutical, and water treatment industries. The non-pressure design complies with standard atmospheric vessel requirements, while the circular structure ensures superior sealing performance to prevent leaks.
Key Features
Premium Material
- Made of **304/316 stainless steel** for excellent corrosion resistance, high-temperature tolerance, and long-term durability.
Leak-Proof Seal
- Precision-engineered flange with **silicone/fluororubber gaskets** and multi-bolt locking for a **zero-leak guarantee**.
Quick & Easy Operation
- Lightweight design with **hinged or bolted cover options**, enabling **single-person access** and reduced downtime.
Safety First
- Optional **anti-fall mesh** (load capacity: 200kg) and **anti-slip surface finish** for enhanced operational safety.
Fully Customizable
- Available in **DN400-DN800** (custom sizes supported), **flange standards** (ANSI, DIN, JIS), and **accessories** (sight glass, vent valve).
Applications
- Oil & Gas: Storage tanks, reactors
- Food & Pharma: Hygienic vessel cleaning, inspection
- Water Treatment: Sewage tanks, reservoirs
- Marine & Power: Boiler maintenance, pressure vessel access
Why Choose Us
✓ ISO-Certified manufacturing
✓ 1-year warranty & lifetime support
✓ Fast delivery & OEM/ODM services
✓ Free technical consultation & 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.
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