AstroForge Fitting Industries delivers precision-engineered fasteners built for strength, reliability, and extreme industrial environments.

Lap Joint Flange

Lap Joint Flange – Premium Quality by AstroForge Fitting Industries

 At AstroForge Fitting Industries, we take pride in manufacturing and supplying high-quality Lap Joint Flanges that meet international standards. Our Lap Joint Flanges are engineered for durability, precision, and superior performance across various industries.

What is a Lap Joint Flange?

A Lap Joint Flange is a two-component flange assembly that includes a stub end and a loose backing flange. This design allows easy alignment and rotation, making it ideal for piping systems that require frequent dismantling or adjustments. These flanges are widely used in applications involving low-pressure environments and non-toxic fluids.

Flange Size and Specifications

We offer Lap Joint Flanges in a wide range of sizes, from ½” (15 NB) to 48″ (1200 NB), ensuring a perfect fit for diverse piping requirements. Our flanges are available in multiple international standards to meet your project specifications.

Flange Standards We Offer

At AstroForge Fitting Industries, our Lap Joint Flanges are manufactured according to globally recognized standards:

DIN Standards:

  • DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673

British Standards (BS):
  • BS4504, BS1560, BS10

American Standard:
  • ANSI B16.5

Key Features of Our Lap Joint Flanges
  • Easy Installation & Maintenance – The loose backing flange allows for quick and easy alignment.
  • Corrosion Resistant – Manufactured using high-quality materials that offer excellent resistance to rust and corrosion.
  • Versatile Applications – Suitable for low-pressure applications, including chemical processing, water treatment, and oil & gas industries.
  • Precision Engineering – Manufactured with strict quality control to meet international industry standards.
  • Cost-Effective Solution – Ideal for applications requiring frequent adjustments and maintenance.

Applications of Lap Joint Flanges

Our Lap Joint Flanges are used in various industries, including:

  • Oil & Gas – Pipeline connections that require frequent maintenance.

  • Chemical Processing – Safe handling of non-toxic and low-pressure fluids.

  • Water Treatment Plants – Effective for easy pipe connections in water distribution systems.

  • Petrochemical Industry – Used in pipeline networks where flexibility is required.

  • Power Plants – Essential for fluid transfer in energy generation facilities.

Why Choose AstroForge Fitting Industries?

At AstroForge Fitting Industries, we are committed to delivering top-notch industrial flange solutions that exceed customer expectations. Our Lap Joint Flanges are crafted using premium materials and undergo stringent quality checks to ensure durability and high performance.

  • Wide Range of Sizes & Standards
  • Superior Material Quality
  • Competitive Pricing
  • Fast & Reliable Delivery
  • Customization Available

Get in Touch with Us

Looking for high-quality Lap Joint Flanges? AstroForge Fitting Industries is your trusted partner for reliable and efficient piping solutions. Contact us today for quotes and inquiries!

Lap Joint Flanges – Product Specifics

Parameter Specification
Product Name Lap Joint Flanges
Flange Type Two-Piece Lap Joint Pipe Flanges (Used with Stub End)
Primary Function Lap Joint Flanges designed for easy alignment and frequent dismantling of piping systems
Design Feature Flat face flange that rotates freely around a stub end for precise bolt hole alignment
Connection Type Slip-over flange used in combination with butt weld Stub End
Manufacturing Standards ASME B16.5 Lap Joint Flanges, ASME B16.47 Lap Joint Flanges, ANSI Lap Joint Flanges, DIN EN 1092-1 Lap Joint Flanges, BS Standard Lap Joint Flanges
Pressure Ratings Class 150 Lap Joint Flanges, Class 300 Lap Joint Flanges, Class 600 Lap Joint Flanges, PN 6 / PN 10 / PN 16 / PN 25 Lap Joint Flanges
Size Range ½” NB to 24” NB Lap Joint Flanges (ASME B16.5), 26” NB to 60” NB Lap Joint Flanges (ASME B16.47)
Facing Type Flat Face Lap Joint Flanges (used with Stub End raised face)
Carbon Steel Lap Joint Flanges ASTM A105 Lap Joint Flanges, ASTM A350 LF2 Lap Joint Flanges
Stainless Steel Lap Joint Flanges ASTM A182 F304 Lap Joint Flanges, ASTM A182 F304L Lap Joint Flanges, ASTM A182 F316 Lap Joint Flanges, ASTM A182 F316L Lap Joint Flanges
Alloy Steel Lap Joint Flanges ASTM A182 F11 Lap Joint Flanges, ASTM A182 F22 Lap Joint Flanges
Special Alloy Lap Joint Flanges Duplex Lap Joint Flanges, Super Duplex Lap Joint Flanges, Inconel Lap Joint Flanges, Monel Lap Joint Flanges
Dimensional Features Lap Joint Flanges Outside Diameter (OD), Bolt Circle Diameter (BCD), Number of Bolt Holes, Bolt Hole Diameter, Flange Thickness
Surface Finish 125 AARH Lap Joint Flanges, 250 AARH Lap Joint Flanges, Smooth Machined Lap Joint Flanges
Testing & Inspection Visual Inspection, PMI Testing, Ultrasonic Testing (UT), Third-Party Inspection for Lap Joint Flanges
Surface Protection Anti-Rust Oil Coated Lap Joint Flanges, Black Painted Lap Joint Flanges, Galvanized Lap Joint Flanges
Operating Conditions Suitable for low to medium pressure applications and systems requiring frequent dismantling
Applications Petrochemical Lap Joint Flanges, Chemical Plant Lap Joint Flanges, Food Processing Pipelines, Water Treatment Systems, Corrosion-Resistant Piping Systems
Key Advantages Easy bolt alignment, Reduced installation time, Cost savings when used with corrosion-resistant Stub Ends, Ideal for systems requiring regular maintenance

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FAQs - Lap Joint Flange

Lap Joint Flanges allow easy alignment, rotation, and dismantling of pipelines, making them perfect for low-pressure systems requiring frequent adjustments and maintenance-friendly connections.

It consists of a stub end and backing flange, enabling rotation and easy assembly, providing flexible, cost-effective solutions for piping systems requiring regular modifications.

AstroForge manufactures Lap Joint Flanges in sizes ½” (15 NB) to 48” (1200 NB), ensuring versatility and compatibility across small to large-scale pipeline projects.

Our Lap Joint Flanges meet ANSI B16.5, BS4504, BS1560, BS10, and DIN standards, ensuring global compatibility, precision engineering, and reliable industrial performance worldwide.

Features include corrosion resistance, cost-effectiveness, easy installation, versatility, and high precision, making them reliable and efficient for diverse industrial piping applications across multiple sectors.

Manufactured from premium-grade materials, Lap Joint Flanges resist rust and corrosion, ensuring durability, reliability, and long-term performance in chemical, water treatment, and offshore industries.

 What makes Lap Joint Flanges cost-effective? Which industries commonly use Lap Joint Flanges globally?
They are widely used in oil and gas, petrochemicals, chemical processing, water treatment, and power plants, offering flexibility, durability, and easy maintenance solutions.

Slip-On Flanges undergo rigorous inspection including visual, dimensional, radiography, hydrostatic, ultrasonic flaw detection, hardness, and tensile testing to meet ASME and global standards.

AstroForge delivers superior Lap Joint Flanges with global standards compliance, premium materials, customization options, competitive prices, fast delivery, and a strong reputation for customer satisfaction.

Customers can contact AstroForge directly via our website or sales team for detailed specifications, quotations, customization requests, and reliable, timely order fulfillment worldwide.