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- Backing Ring Flanges, Duplex Backing Ring Flanges
Duplex Steel Backing Ring Flange
- Duplex Steel Backing Ring Flange Specification Standard : AS 2129 Table D, E, F, H, J,K, R, S & T, ANSI, ASME, EN1092, JIS, SABS1123, GOST-12820, AS/NZS 4087
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