The lap joint flange, also known as the loose flange, is a specially designed piping component widely used in situations requiring frequent disassembly or adjustment. Its core design feature is the loose connection between the flange ring and the pipe end, allowing the flange ring to rotate freely, facilitating alignment of bolt holes during installation.
Lap Joint Flange
Is a specially designed piping component widely used in situations requiring frequent disassembly or adjustment. Its core design feature is the loose connection between the flange ring and the pipe end, allowing the flange ring to rotate freely, facilitating alignment of bolt holes during installation.
It can be made from materials such as 10#, 20# carbon steel, 16MnR, 12Cr1MoV alloy steel, and ASTM A403, 1Cr18Ni9Ti stainless steel. The pressure range follows international system standards of PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160 (MPa). Product sizes range from DN10 to DN4000 (mm). Based on actual needs, sealing surface types such as flat (FF/A type), raised face (RF/B type), tongue/groove (C&D type/G type/N type), male/female (E type&F type/H type), and metal gasket sealing faces (M type) can be used.
With its split design, rotational flexibility, and cost-effectiveness, the lap joint flange is an ideal choice in industrial piping systems. It is especially suitable for scenarios requiring frequent maintenance, complex environments, or dynamic stresses, balancing sealing reliability with installation efficiency.
