Our Loose Flange with Weld-On Collar system, also known as a Lap Joint Flange, provides unmatched flexibility for piping connections. This innovative two-part design separates the sealing function from the bolting function. The stub end is butt-welded to the pipe, creating a permanent, leak-tight seal, while the matching loose flange rotates freely for effortless bolt hole alignment.

Ideal for stainless steel systems and applications requiring frequent disassembly or maintenance, it eliminates the need for precise rotational alignment during final welding. This makes it a superior, cost-effective alternative to a standard weld neck flange in many non-critical services. The design also accommodates thermal expansion and simplifies inspection.