Lap Joint Flanges

Lap Joint Flanges Image

Lap Joint Flanges are widely used in piping systems that require frequent dismantling, inspection, and maintenance. Designed to work with a stub end, these flanges allow easy alignment and rotation, making installation more convenient compared to conventional flange types. Gopal Forge Industries™ manufactures high-quality Lap Joint Flanges that meet international standards and deliver dependable performance across industries including oil & gas, petrochemical, power generation, marine, and chemical processing.

Lap Joint Flanges, Lap Joint Flanges Manufacturers, Lap Joint Flanges Suppliers, Lap Joint Flanges Stockists, Lap Joint Flanges Exporters

Gopal Forge Industries™ is recognized among leading Lap Joint Flanges manufacturers committed to delivering precision-engineered products for critical industrial applications. Our manufacturing process combines advanced forging methods, accurate machining, and strict quality control to ensure every flange meets dimensional and performance requirements. These flanges are designed to provide flexibility and efficiency in piping systems where frequent maintenance is essential.

As experienced Lap Joint Flanges exporters, Gopal Forge Industries™ serves customers across global markets with reliable and high-performance flange solutions. Our export operations are supported by international quality standards, secure packaging, and efficient logistics management. This allows us to meet the requirements of large-scale industrial projects while ensuring timely deliveries and product consistency.

Gopal Forge Industries™ has established a strong reputation among professional Lap Joint Flanges suppliers by offering a broad selection of sizes, pressure classes, and material grades. Our technical team assists customers in selecting suitable flange solutions based on project specifications and operational demands. This customer-focused approach helps industries achieve reliable performance and long-term value from their piping systems.

As dependable Lap Joint Flanges stockists, we maintain substantial inventory to support urgent requirements and planned maintenance shutdowns. Our stock includes carbon steel, stainless steel, alloy steel, duplex steel, and other specialty materials suitable for various industrial environments. Ready availability enables customers to reduce lead times and keep projects on schedule without compromising quality.

Among trusted Lap Joint Flanges manufacturers, Gopal Forge Industries™ continuously invests in manufacturing excellence and product innovation. Every flange undergoes comprehensive inspection procedures to verify dimensional accuracy, material integrity, and compliance with industry specifications. Our dedication to quality has helped us become a preferred partner for customers seeking reliable flange solutions worldwide.

Being experienced Lap Joint Flanges suppliers, we also provide complete industrial piping solutions including pipe fittings, buttweld fittings, carbon steel elbow, stainless steel elbow, reducers, tees, forged fittings, valves, and other piping components. This comprehensive product portfolio allows customers to simplify procurement and source compatible products from a single trusted industrial supplier.

Lap Joint Flanges Manufacturers in India, Lap Joint Flanges Suppliers in India, Lap Joint Flanges Stockists in India, Lap Joint Flanges Exporters in India

Lap Joint Flanges Specification

Product Name Lap Joint Flanges
Technical Description Lap Joint Flanges are loose flanges designed for use with lap joint stub ends. They are suitable for piping systems where frequent dismantling, alignment, inspection, or replacement is required. The flange does not directly contact the process fluid; the stub end provides the sealing surface and forms the flange connection.
Available Sizes 1/2" (15 NB / DN15) to 48" (1200 NB / DN1200), with larger sizes available subject to the applicable standard and customer drawing.
Standards ASME/ANSI B16.5, ASME B16.47 Series A & B, MSS SP-44, API 605, EN 1092-1, DIN, BS 4504, BS 10, BS 1560, JIS B2220, GOST, UNI, AS 2129, AWWA C207, SABS 1123 and other applicable international standards. Custom designs are available according to drawings and specifications.
Material Grades Carbon Steel: ASTM A105 / A105N, ASTM A350 LF2;
Stainless Steel: ASTM A182 F304/F304L, F316/F316L;
Alloy Steel: ASTM A182 F5, F9, F11, F22;
Other material grades available according to service requirements and applicable standards.
Pressure Ratings ASME Class 150, 300, 600, 900, 1500 and 2500;
EN/DIN PN6, PN10, PN16, PN25 and PN40;
JIS 5K, 10K, 16K, 20K, 30K, 40K and 63K.
Pressure-temperature ratings depend on material, size and the applicable flange standard.
Dimensions Dimensions, outside diameter, bolt circle, bolt-hole size, number of bolt holes, flange thickness and bore are manufactured according to the specified standard. Available face configurations include Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), and other configurations where permitted by the applicable standard. Lap Joint Flanges are used with compatible stub ends.
Flange Face / Connection Type Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), and other compatible configurations as specified by the applicable standard and application.
Manufacturing Process Forged, heat treated and machined. Plate-manufactured configurations may be supplied where permitted by the applicable standard and specification.
Coating / Surface Treatment Oil coating, black paint, anti-rust coating, zinc plating, hot-dip galvanizing, cold galvanizing and other surface treatments as specified by the customer.
Inspection & Testing Dimensional inspection, visual inspection, hydrostatic testing where specified, ultrasonic testing, magnetic particle testing, radiographic testing and material verification by direct-reading spectrograph as applicable.
Test Certificates Material Test Certificate (MTC) as per EN 10204 3.1 or 3.2, raw material certificate, inspection reports, NDT reports and third-party inspection reports where required. NACE MR0103 / MR0175 compliance can be provided when specified.
Special Design Custom dimensions and configurations available according to customer drawings, technical specifications and applicable ASME, ANSI, EN, DIN, BS, JIS or other standards.
Application Used in piping systems for petrochemical plants, oil refineries, chemical processing, power generation, heavy-oil facilities, water treatment, process industries and other applications requiring convenient flange removal, alignment and maintenance.
Origin Available from manufacturers and suppliers in India and other major manufacturing regions including Europe, Japan, USA and South Korea, subject to source and specification.
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FAQ's

A Lap Joint Flange is a loose flange used together with a stub end. The flange does not come into direct contact with the process fluid and can be rotated around the stub end, making it suitable for piping systems that require frequent dismantling or alignment.

The main advantages of Lap Joint Flanges include easy alignment, simple installation, and convenient removal for maintenance. Since the flange can rotate around the stub end, bolt-hole alignment is easier compared with fixed flange types.

Lap Joint Flanges are commonly used in piping systems where frequent dismantling, inspection, cleaning, or maintenance is required. They are widely used in chemical processing, petrochemical, food processing, pharmaceutical, water treatment, and other industrial applications.

Lap Joint Flanges are available in a range of materials depending on the application and service conditions, including:
  • Stainless Steel
  • Carbon Steel
  • Alloy Steel
  • Duplex Stainless Steel
  • Nickel Alloys

A Lap Joint Flange is used with a stub end and can rotate freely around it, making it convenient for frequent dismantling and bolt-hole alignment. A Weld Neck Flange is welded directly to the pipe and provides a more rigid connection, making it suitable for high-pressure, high-temperature, and critical piping applications.

Application of Lap Joint Flanges

Latest Price List of Lap Joint Flanges

The latest market pricing for Lap Joint Flanges depends on factors such as material grade, pressure class, flange dimensions, manufacturing requirements, and fluctuations in raw material costs. Carbon steel Lap Joint Flanges are generally considered economical for standard industrial applications, while stainless steel, duplex steel, super duplex steel, and alloy steel grades are positioned at higher market levels due to their superior corrosion resistance and mechanical properties. Gopal Forge Industries™ offers competitive market-based pricing and customized quotations tailored to project requirements and bulk purchasing needs.

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