Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Discover our impeccably crafted stainless steel round non-pressure manhole, tailored for tanks, vessels, and pipelines. This access point is engineered to offer unrivaled safety and superior corrosion resistance for inspection and maintenance tasks. Meticulously constructed from high-grade 304/316 stainless steel, it promises unmatched durability and resilience in extreme environments. This makes it the quintessential choice for critical applications, including food processing, chemical, pharmaceutical, and water treatment industries. Notably, the non-pressure design aligns with standard atmospheric vessel requirements, and its circular architecture ensures impeccable sealing performance to prevent undesirable leaks.
Key Features
Premium Material
- Fabricated from **304/316 stainless steel**, this material boasts excellent resistance to corrosion, impressive high-temperature endurance, and long-lasting durability.
Leak-Proof Seal
- The flange is precision-engineered, complemented with **silicone/fluororubber gaskets** and a robust multi-bolt locking mechanism, ensuring an uncompromising **zero-leak guarantee**.
Quick & Easy Operation
- Features a lightweight design with an option of **hinged or bolted cover**, facilitating **single-person access** and significantly reducing downtime.
Safety First
- Incorporates an optional **anti-fall mesh** with a load capacity of 200kg and an **anti-slip surface finish** for heightened operational safety.
Fully Customizable
- Offers flexibility with availability in **DN400-DN800** dimensions (custom sizes are also supported), various **flange standards** (ANSI, DIN, JIS), and a choice of **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 tasks
- Water Treatment: Suitable for sewage tanks and reservoirs
- Marine & Power: Optimal for boiler maintenance and pressure vessel access
Why Choose Us
✓ Proudly ISO-Certified manufacturing ensures top-notch quality
✓ Benefit from a 1-year warranty coupled with lifetime support
✓ Enjoy rapid delivery and comprehensive OEM/ODM services
✓ Avail of free technical consultations 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.