Segmentation by type distinguishes the standardization frameworks that govern dimensional compatibility, material selection, and pressure ratings. The most prevalent classification is the ANSI/ASME B16.5 series, which covers nominal pipe sizes from ½ in. to 24 in. and pressures up to 250 bar, representing the bulk of global shipments. API 6A flanges, engineered for oilfield service, command a niche but high‑value share, particularly in offshore and high‑temperature applications. DIN (Deutsches Institut für Normung) standards dominate European projects, offering metric dimensions and material grades that align with regional codes. JIS (Japanese Industrial Standards) flanges are concentrated in East‑Asian infrastructure, where metric sizing and seismic‑resistant designs are prioritized. Emerging Custom‑Machined or Special‑Order variants, often fabricated to client‑specific tolerances, occupy a modest portion of the market but are critical for legacy or non‑standard pipework. By parsing the market through these type categories, analysts can attribute price differentials, supply‑chain risks, and regional adoption patterns within the broader Slip On Flange taxonomy.