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Prime Steel takes pride in being a leading force in the manufacturing and supply of lap joint flanges. As a dedicated company, we specialize in producing top-tier lap joint flanges that meet the highest industry standards. Our commitment to excellence is reflected in our state-of-the-art manufacturing facilities, where precision engineering and cutting-edge processes ensure the creation of lap joint flanges that excel in performance and durability.
Understand Your Requirements
Material Selection
Face Type (FF; RF, RTJ)
Size and Dimensions
Consider Industry Standards
Gasket Selection
ANSI/ASME B16.5, B 16.47 Series A & B, BS4504, BS 10, EN-1092, DIN 2641
15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
150#, 300#, 600#, PN6, PN10, PN16, PN25, PN40, PN64.
FF—Flat Face (FF), RF—Raised Face (RF)
Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel & Super Duplex Steel, LTCS, Nickel Alloy
oil and gas, petrochemicals, power generation, marine and food & beverage process lines, and water treatment
ANSI/ASME B16.5 Lap Joint Flanges are part of the ANSI and ASME standards. These flanges are designed for use with lap joint stub ends in systems where quick assembly or disassembly of the piping is required.
Read MoreDIN 2641 to DIN 2642 are German standards that specify dimensions and technical requirements for lap joint flanges. This standard covers nominal pressure ratings from PN6 to PN100. Lap joint flanges are typically used in conjunction with stub ends
Read MoreISO (International Organization for Standardization) provides standards for industrial lap joint flanges. For lap joint flanges, ISO standards typically fall under the ISO 7005 series. Common pressure ratings include PN6, PN10, PN16, PN25, PN40
Read MoreJIS B2220 is a Japanese Industrial Standard that specifies dimensions For lap joint flanges, JIS B2220 includes classifications such as 5K and 10K. These classifications represent different pressure ratings for the flanges.
The AWWA provides standards for water-related infrastructure, including flanges used in water supply systems. AWWA C207 is the standard that covers steel flanges for waterworks service, including lap joint flanges.
Read MoreGOST, which stands for "Gosudarstvennyy Standart" in Russian, translates to "State Standard" in English. GOST 12821-80 PN10 lap joint flanges are designated by the standard number, followed by the nominal pressure rating.
Read MoreThe pressure class of a lap joint flange is a measure of its ability to withstand pressure in a piping system. Pressure class is commonly denoted by a designation such as Class 150, Class 300, etc. Understanding the pressure class is crucial for selecting the appropriate flange based on the operational requirements of the system.
The pressure class of a lap joint flange represents the maximum allowable pressure at a specific temperature. It indicates the flange's capability to handle pressure and is crucial for ensuring the safety and integrity of a piping system. Here's an explanation of lap joint flange pressure class:
A lap joint flange is a specialized type of flange utilized in piping systems to facilitate easy assembly, disassembly, and alignment. It is particularly distinguished by its two-piece construction and is frequently employed alongside a lap joint stub end. The flange has a flat face on one side and a raised or flat back face on the other.
Lap joint flanges are typically used with lap joint stub ends, allowing for rotation and easy alignment during installation. Connection is achieved through bolts, and these flanges are commonly employed in scenarios where frequent maintenance or inspection activities are anticipated. They offer advantages in terms of flexibility and ease of dismantling, making them suitable for specific applications in various industries. However, they may not be recommended for high-pressure or critical applications where fully welded connections are preferred.
Two-Piece Design:
Flange Configuration:
Connection with Lap Joint Stub End:
Bolted Joint:
Applications with Easy Dismantling Needs:
Gasket Placement:
Pressure Ratings and Standards:
A lap joint flanged joint consists of several main components, each playing a specific role in the assembly. These components work together to create a joint that allows for easy assembly, disassembly, and rotation during installation. The lap joint flanged joint is particularly suitable for applications where frequent maintenance, inspection, or realignment of the piping system is required.
Lap Joint Flange:
Lap Joint Stub End:
Gasket:
Bolts and Nuts:
Flange Facing:
Pipe:
Check ANSI/ASME B16.5, B 16.47 Lap Joint Flange Dimensions Download
