Flange Standards Overview
Flange design, manufacturing, and inspection must follow strict international and national standards. Understanding different standard systems is crucial for proper flange selection.
ASME Standards (American)
- ASME B16.5: NPS 1/2 إلى 24
- Pressure Classes: 150, 300, 600, 900, 1500, 2500
- Face Types: RF, FF, RTJ, MFM
EN Standards (European)
- EN 1092-1: Main European steel flange standard
- Pressure Ratings: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100
- Various flange types and sealing faces
GB Standards (Chinese)
- GB/T 9115-9119: Various flange types
- Pressure Ratings: PN2.5 to PN160
Pressure Rating Comparison
- Class 150 approximately PN20 (20 bar)
- Class 300 approximately PN50 (50 bar)
- Class 600 approximately PN110 (110 bar)
- Class 1500 approximately PN260 (260 bar)
Flange Facing Types
- Raised Face (RF): Most common, medium-low pressure
- Flat Face (FF): Low pressure applications
- Ring Type Joint (RTJ): High pressure and temperature
- Male-Female (MFM): Good sealing performance
- Tongue-Groove (TG): Best sealing for hazardous media
اختيار المواد
- Carbon Steel: General applications
- Stainless Steel: Corrosive media
- Alloy Steel: High temperature and pressure
- Duplex Steel: Seawater and chloride environments
واتساب: +86-18658777855
البريد الإلكتروني: 1007788887@qq.com
قد يعجبك أيضاً
DIN Flanges vs ANSI Flange: ANSI Class 150, PN Rating and Selection Guide
A practical guide comparing DIN flanges and ANSI flange standards, including ANSI Class 150, PN meaning, flange rating ANSI systems, bolt patterns, dimensions and selection tips.
Flange Coupling Guide: Coupling Flange Type, Flanged Coupler and Shaft Applications
A practical guide to flange coupling, coupling flange type selection, flanged coupler structure, flange shaft coupling applications, installation and maintenance.
What Is an Orifice Flange? Orifice in Piping, Orifice Pipe and Flow Measurement Guide
A practical guide explaining what an orifice flange is, how an orifice in piping works, orifice pipe flow measurement, pressure taps, orifice plates and selection tips.