A 6-inch ANSI Class 150 blind flange measures 9 inches across the outside, 8.5 inches across the bolt circle, and 0.625 inches thick. Change the standard to JIS B2220 10K, and the same nominal 150 mm opening suddenly needs a 280 mm outside diameter...

During a piping upgrade, an engineer ordered twenty Class 150 flanges for a 6-inch steam line planned to run at 200 psi. When the bolt circles failed to match the neighboring Class 300 valve flanges, the discrepancy was traced to the pressure class...

When a piping specification calls for carbon steel flanges, the material line almost always reads ASTM A105. It is the default forged carbon steel grade for flanges, valves, and other pressure-containing components, and it shows up across oil and ga...

A piping engineer reviewing flange options for a wet chlorine line, a hot sulfuric acid circuit, or a seawater injection system usually finds that 316L stainless steel is not enough. Pitting appears on the gasket face within months, crevice corrosio...

Two pipe spools arrive at the same project site. One is tagged "Plate Flange, NPS 6, Class 150"; the other reads "Plate Flange, DN150, PN16". Visually they look similar, but their dimensions, bolt patterns and pressure ratings come from different sta...

Duplex stainless steel flanges are usually the right answer when a piping system needs to resist chloride-induced stress corrosion cracking, pitting, or high mechanical loads without moving up to a more expensive nickel-based alloy. The reason is st...

A complete technical guide to duplex steel flanges — strength, corrosion resistance, and industrial applications. Industrial Piping Components Duplex Steel Flange A duplex steel flange is a high-performance pipe connection component manufactured fro...

Industrial Piping Components Carbon steel flanges are forged or cast metal components used to connect pipes, valves, pumps, and other equipment in piping systems. They provide a reliable, leak-proof joint that can be easily assembled and disassembled...

In a world built on pipes — carrying water, gas, chemicals, or steam — the unsung hero is often the flange. Among the many types, stainless steel plate flanges stand out as a practical, reliable, and widely used solution for connecting sections of p...

Non-standard flanges are flange components manufactured to dimensions, pressure ratings, or material specifications that fall outside the scope of published standards such as ASME B16.5, EN 1092-1, or GOST 12820. They are produced from project-speci...

Flange selection is one of the most consequential decisions in industrial pipeline design, and in Europe the reference point for that decision is almost always the same: EN 1092 flanges. This standard family governs the dimensions, pressure ratings...

Direct Answer JIS B2220 Steel Flanges are Japanese Industrial Standard flanges rated at four pressure classes, 5K, 10K, 16K, and 20K, made primarily from carbon steel grades SS400 or S25C, with 10K being the most widely used class for general piping...