Flange Technical Guides & Industry News
Technical guidance on flange materials, standards, inspection, applications and industrial procurement.
ASTM A320 L7 vs L7M Stud Bolts: What Buyers Must Check
Compare ASTM A320 L7 and L7M stud bolts: strength, hardness, impact testing, markings, matching nuts, MTC checks and RFQ requirements.
ASTM B564 UNS N06625 Flanges: Grade 1 vs Grade 2
Learn how ASTM B564 Grade 1 and Grade 2 apply to UNS N06625 flanges, what ASME B16.5 controls, and which MTC and RFQ details buyers should check.
Flange Face Finish: Concentric vs Spiral Serrations Explained
Concentric and spiral serrations are both machined flange face finishes used to help a gasket grip and seal. The important difference is the groove path: concentric serrations form separate circular…
Duplex 2205 vs 316L Flanges: Which Material Should You Choose?
Quick answer: Duplex 2205 flanges are usually the stronger candidate for chloride-bearing service, higher resistance to chloride stress corrosion cracking, and projects that can benefit from higher material strength. ASTM…
C-2000 vs C22 Flanges: Material Selection and RFQ Checks
Compare C-2000 and C22 flange material identities, service conditions, forging specifications and RFQ checks before approving a nickel-alloy substitution.
ASTM A182 F51 vs F60 Flanges: S31803 vs S32205 Explained
Compare ASTM A182 F51 and F60 duplex flanges, including S31803/S32205 mapping, dual certification, MTC checks and RFQ requirements.
UNS S32750 vs S32760 Flanges: ASTM A182 F53 or F55?
Compare S32750 and S32760 super duplex flanges, including ASTM A182 F53/F55 mapping, chemistry differences, selection checks and RFQ details.
Can a PN16 Flange Mate With an ASME Class 150 Valve?
Can a PN16 flange bolt to an ASME Class 150 valve? Check the standard, drilling, facing, pressure-temperature rating and approved transition details.
Can EN 1092-1 Type B1/B2 Mate With ASME Raised Face Flanges?
Can EN 1092-1 Type B1 or B2 mate with an ASME raised face flange? Compare the standards, geometry, gasket and RFQ checks before connecting.
EN 1092-1 Lap Joint Flange and Collar Compatibility
Learn what must match between an EN 1092-1 loose flange and its collar or stub end: DN, PN, bore, contact geometry, facing and RFQ details.