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DIN PN25 Carbon Steel Bellow Seal Globe Valve Materials of Main Parts No. Part Name Material 1 Body GS-C25, 1.7363, 1.4308, 1.4408, 1.4306, 1.4301 2 Disc ASTM A182-Gr.F6a, F22, F304, F316, F321, F304L...