Technical Blog
Standards, materials and inspection practice — written for the people who specify, buy and inspect flanges and forgings, not for search engines.
Start with the flange standard comparison if you are converting between ASME classes and EN/DIN PN ratings, or with the material guide if the service conditions are aggressive.
Flange Standards Comparison: ANSI vs DIN vs EN vs JIS
How ASME B16.5, DIN, EN 1092-1 and JIS B2220 differ in size, rating and bolt pattern — and how to convert class to PN safely.
Forging Process Overview: Open Die vs Closed Die vs Ring Rolling
Open-die, closed-die and ring rolling compared: grain flow, tooling cost, achievable shapes and how to choose the right process.
Material Selection Guide for Flanges and Forged Components
Choose flange material by temperature, corrosion and strength: A105, A350 LF2, 304/316L, duplex 2205 and F11/F22 compared.
Quality Control and NDT Methods for Flanges and Forgings
UT, MT, PT, PMI, tensile and impact testing explained: what each test finds, when to specify it, and the certificates to require.
Export & Import Guide: Sourcing Flanges and Forgings from China
Supplier checks, RFQ specification, inspection, Incoterms, payment, packing, shipping times and the pitfalls that cost money.