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Gr2 Titanium Weld Neck Flange Product name: Gr2 Titanium weld neck flange Type: WNRF Material Grade: Gr1, Gr1, Gr2, Gr3, Gr4, Gr7, Gr9 Standard: ANSI B16.5,JIS B2220, DIN2627-2628,ASME,GB/T 9116, ...