SOLUTION
2011
Founded
in the year
LONGAN FLANGE
WHAT IS LAP JOINT FLANGE
Lap joint flanges are popular with a name called loose flanges. These flanges are appropriate for connecting pipes or pipes or fittings. They are distinct from other flange types because they are not welded directly to the pipe.
Common Applications
Chemical Industry
Lap-joint flanges connect pipes carrying various chemicals, acids, and corrosive substances, where frequent maintenance and inspection are necessary.
Petrochemical Industry
Lap-joint flanges are useful in the petrochemical industry and can bear high pressure and temperature.
Water Treatment Plants
Lap-joint flanges are used in water treatment plants to connect pipes that transport treated or untreated water, allowing easy access during maintenance and repair.
Food and Beverage
In the food processing industry, lap-joint flanges connect pipes carrying liquids and gases, ensuring hygiene and facilitating quick disassembly for cleaning.
Plumbing
The versatile lap-joint flanges are also suitable for plumbing systems in residential and commercial applications.
Advantages of Flanges
Lap-joint flanges have several advantages, making themselves the best choice in many situations.
Exceptional Reliability
Lap joint flanges securely connect two pipes or fittings, effectively preventing system leaks and ensuring high connection reliability.
Easy Maintenance
Due to its simple structure, lap joint flanges are easy to install and dismantle, making maintenance and cleaning convenient.
Low Installation Costs
Lap joint flanges have relatively low manufacturing and installation costs, which are manageable, helping to reduce overall project costs.
Cost Savings
When pipe materials are unique and expensive, using lower-grade flange materials while maintaining the same pipe material can achieve material cost savings.
Easy Installation
Lap joint flanges simplify construction by easing bolt hole alignment during assembly and accommodating future changes during equipment replacements.
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Safety Precautions When Using
Lap-joint Flanges
PROPER
INSTALLATION
Ensure the lap-joint flange is correctly assembled and bolts are tightened to the recommended torque specifications to prevent leaks and accidents.
ADVANTAGES OF FLANGES

For leak-free pipe connections, lap-joint flanges are an end-to-end solution. They might seem small, but their role is crucial. Slip-on flanges should be commended for maintaining smooth flow. Are you on a budget? Don’t worry! These flanges are cost-effective compared to other types of flanges. If you need expert assistance to meet your unique project requirements, please contact us.

Frequently Asked Questions
Q1: How does a lap-joint flange compare to a welding-neck flange or a slip-on flange?
A lap-joint flange differs in design and use from welding-neck flanges and slip-on flanges. Welding-neck flanges are specifically designed for high-pressure applications and require being welded to the pipeline. In contrast, slip-on flanges are easier to install but may offer varying degrees of joint integrity.
Q2: Can lap-joint flanges be used for high-pressure systems?
Due to their design, lap-joint flanges are suitable for medium to low-pressure systems, but they do not provide the same level of reinforcement as welding-neck flanges. They are not suitable for high-pressure applications where joint integrity is crucial.
Q3: How do lap-joint flanges work?
The working principle of a lap-joint flange involves sliding the loose flange over the pipe and securing it with bolts to a stub end. The gap between the stub end and the loose flange facilitates alignment and adjustment during installation.
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