Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Introducing our meticulously crafted stainless steel round non-pressure manhole, epitomizing the pinnacle of safety and durability for tanks, vessels, and pipelines. This expertly engineered manhole offers seamless, corrosion-resistant access for all inspection and maintenance requirements. Built from superior 304/316 stainless steel, it demonstrates extraordinary strength and resilience even under the most extreme conditions. This makes it the ultimate choice for industries such as food processing, chemical, pharmaceutical, and water treatment sectors. The design adheres to standard guidelines for atmospheric vessels and features a circular structure that provides unmatched sealing performance, effectively eliminating any potential leakage risks.
Key Features
Premium Material
- Crafted from the finest **304/316 stainless steel**, renowned for its exceptional corrosion resistance, superior high-temperature endurance, and long-lasting durability.
Leak-Proof Seal
- Equipped with a precision-engineered flange, incorporating **silicone/fluororubber gaskets** and a robust multi-bolt locking system, ensuring an absolute **zero-leak assurance**.
Quick & Easy Operation
- Designed with user-friendliness in mind, its lightweight structure offers versatile **hinged or bolted cover options**, facilitating **single-person access** and minimizing operational disruptions.
Safety First
- Emphasizing safety with an optional **anti-fall mesh** (load capacity: 200kg) and a **secure anti-slip surface finish**, guaranteeing safe operation in all working conditions.
Fully Customizable
- Available in sizes from **DN400-DN800** with custom dimensions, compliant with various **flange standards** (ANSI, DIN, JIS). Enhance functionality with optional **accessories** like sight glasses and vent valves customized to your specific needs.
Applications
- Oil & Gas: Perfect for storage tanks and reactor applications
- Food & Pharma: Ideal for hygienic vessel cleaning and meticulous inspection
- Water Treatment: Essential for the maintenance of sewage tanks and reservoirs
- Marine & Power: Crucial for boiler maintenance and pressure vessel access
Why Choose Us
✓ Benefit from our ISO-Certified manufacturing excellence
✓ Enjoy unparalleled peace of mind with our 1-year warranty and continued support
✓ Experience prompt delivery and extensive OEM/ODM services for your every need
✓ Avail free technical consultations and precise CAD drawings to optimize your project
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.