气动衬氟防腐蝶阀D641F46-16C,D641F46-10C,D641F46-16P,D641F46-10P,D641F46-16R,D641F46-25R,D641F46-25C,
21


GB9113


GB9131


GB13927




















公称通径D(mm)


40


50

01/22 08:56