Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Introducing our expertly crafted stainless steel round non-pressure manhole, designed with precision for tanks, vessels, and pipelines. This access point ensures safety and corrosion resistance, tailored for seamless inspection and maintenance tasks. Manufactured from robust 304/316 stainless steel, it stands as a paragon of strength and endurance even in the harshest environments, making it a perfect match for the demanding food processing, chemical, pharmaceutical, and water treatment sectors. The non-pressure design aligns with standard atmospheric vessel specifications, while its circular shape promises exceptional sealing performance to effectively prevent any leakage.
Key Features
Premium Material
- Constructed from **304/316 stainless steel**, ensuring unparalleled corrosion resistance, remarkable tolerance to high temperatures, and long-lasting durability that stands the test of time.
Leak-Proof Seal
- Engineered with meticulous precision, the flange features **silicone/fluororubber gaskets** and a multi-bolt locking system, offering a **guarantee of zero leaks** under any circumstances.
Quick & Easy Operation
- Designed with a lightweight structure and available with **hinged or bolted cover options**, it allows for **single-person access** and significantly minimizes downtime.
Safety First
- Enhanced with optional **anti-fall mesh** (supporting up to 200kg) and an **anti-slip surface finish**, this product prioritizes operational safety at all times.
Fully Customizable
- Offered in sizes ranging from **DN400-DN800** with custom dimensions available, compliant with **flange standards** (ANSI, DIN, JIS), and adaptable with various **accessories** such as sight glass and vent valve.
Applications
- Oil & Gas: Perfect for storage tanks and reactors
- Food & Pharma: Ideal 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
✓ ISO-Certified manufacturing, guaranteeing reliability and quality
✓ Enjoy peace of mind with our 1-year warranty and lifetime support
✓ Benefit from fast delivery coupled with 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.