Introduction
Socket welding flanges are a common choice for medium-low pressure piping systems where leak-tight joints and compact connections are required. Custom fabrication offers advantages when standard dimensions do not fit existing equipment or when material specifications deviate from catalog offerings. For procurement engineers, sourcing custom socket welding flanges involves careful attention to dimensional tolerances, material traceability, and testing documentation. This guide outlines the key factors to consider when procuring custom socket welding flanges for industrial applications.
Standards to Confirm
Before requesting a quotation, verify which design standard applies to your project. Common standards for socket welding flanges include:
- ASME B16.5 – Pipe flanges and flanged fittings for NPS 1/2 through 24
- ASME B16.48 – Line blanks (for use with socket welding flanges)
- EN 1092-1 – European standard for flanges (Type 13 for socket welding)
- JIS B2220
