Stainless Steel Round Non-Pressure Manhole
Product Description
Product Overview
Introducing our expertly engineered stainless steel round non-pressure manhole, a true testament to unmatched safety and long-lasting durability tailored for tanks, vessels, and pipelines. Designed with precision to offer a seamless, corrosion-free access point for easy inspection and maintenance tasks, this manhole is crafted from the superior 304/316 stainless steel. Experience its remarkable strength and resistive power against challenging environments, making it the ideal selection for industries like food processing, chemical production, pharmaceuticals, and water treatment. The design adheres to standard atmospheric vessel specifications with its circular formation, ensuring unparalleled sealing performance to effectively negate any leaks.
Key Features
Premium Material
- Constructed from premium-grade **304/316 stainless steel**, celebrated for its extraordinary resistance to corrosion, high-temperature endurance, and unmatched durability.
Leak-Proof Seal
- Fitted with a precision-crafted flange, featuring **silicone/fluororubber gaskets** along with a robust multi-bolt locking system, guaranteeing a steadfast **zero-leak assurance**.
Quick & Easy Operation
- Deliberately designed lightweight structure with flexible **hinged or bolted cover selections**, promoting **single-person access** and significantly reducing operational downtime.
Safety First
- Amplified safety with optional **anti-fall mesh** (load capacity: 200kg) and a **secure anti-slip surface finish**, ensuring safe operations in any environment.
Fully Customizable
- Offered in **DN400-DN800** with options for custom sizing, accommodating various **flange standards** (ANSI, DIN, JIS). Customize with additional **accessories** such as sight glass and vent valve to meet your unique requirements.
Applications
- Oil & Gas: Ideal for storage tanks and reactors
- Food & Pharma: Perfect for hygienic vessel cleaning and inspection
- Water Treatment: Vital for sewage tanks and reservoir upkeep
- Marine & Power: Best suited for boiler maintenance and pressure vessel access
Why Choose Us
✓ Reap the benefits of our ISO-Certified manufacturing standards
✓ Relish peace of mind with our comprehensive 1-year warranty and lifetime support
✓ Enjoy rapid delivery paired with extensive OEM/ODM services
✓ Utilize free technical consultations and precise CAD drawings for your project needs
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.