Branch Connections · Made in Italy
Precision O-Lets. From Standard Excellence to Custom Zero-Gap.
We manufacture the complete range of branch connections to international standards. When commercial tolerances aren’t enough, we engineer custom Zero-Gap CNC solutions for your most critical pipelines.
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The Complete Range. Uncompromising Materials.
We manufacture the full spectrum of standard O-Lets – Weldolets, Sockolets, Threadolets, and Nipolets – in strict compliance with MSS SP-97 and ASME B31.3 design codes. While we supply premium stainless steel as a standard, our strength lies in advanced metallurgy for severe and corrosive environments. Every component is delivered with full EN 10204 3.1/3.2 traceability.
Standard Types
Weldolets · Sockolets · Threadolets · Nipolets
Exotic Alloys
Duplex · Super Duplex · Inconel · Monel · Hastelloy
Custom Engineering
Zero-Gap Engineering. Beyond Commercial Fittings.
Standard branch connections are made to fit a broad range of run pipes, often requiring costly manual adaptation on site. We believe a fitting should be made exactly for your pipe. Upon request, our engineering team designs and manufactures 5-axis CNC machined O-Lets featuring a flawless Zero-Gap radius, calculated to the exact millimeter of your run pipe’s outer diameter (OD).
The Operational Impact of the Perfect Radius.
Self-Centering Fit-Up
The fitting sits perfectly flush against the run pipe. No root gaps, no manual grinding, and no time wasted adapting the piece in the field.
Flawless NDT Inspections
Eliminating the root gap drastically reduces required filler metal volume, supporting homogeneous weld penetration and clear Radiographic and Ultrasonic testing results.
Reduced Thermal Stress
Fewer welding passes mean lower heat input, protecting the structural and metallurgical integrity of the main pipe, especially with sensitive exotic alloys.
Real-World Application
Proven Performance in Complex Assemblies.
Designed for high-integrity piping, process systems, and modular skids. Our O-Lets ensure structural rigidity, zero-leak reliability, and compact vertical footprints where layout space is at a premium.
Let us build the exact O-Let for your pipe.
Whether you need standard MSS SP-97 components from our catalog or a fully engineered Zero-Gap solution, we deliver. Submit your project specifications, materials, and run pipe dimensions.
Contact Engineering info@lpunions.it