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1). Product Name: Alloy Steel Flanges 2). Specification: ASTM/ ASME S/A182/ A 182M F5, F 5a , F9, F11, F12, F22, F91… ASTM/ ASME S/A336/ A 336M F5, F9, F11, F12, F22, F91… 3). Range: 15 NB to 1500 NB ...