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ANSI B165 ASTM A105 A106 Carbon Steel/ Q235 / Stainless Steel FF RF Tg Rj Matel Ss400 Forged Welding Neck Flanges, Find Details and Price about A105 Flange Carbon Steel Flange from ANSI B165 ASTM A105 A106 Carbon Steel/ Q235 / Stainless Steel FF RF Tg Rj Matel Ss400 Forged Welding Neck Flanges - Shandong Guolian Iron and Steel CO., Ltd.