HG/T 20592  法兰 PL 15(B)-25 RFБ─

PL15(B-25RFБ─

SP-3 δ=8 S1=8

PL 250-6 RF）-6 RFRFSRF Sch

WN 32(B)-40 RF S=5

PL25(B)-16RF/ FM/f

WN20B-600RFп╟б═п╡б²п╟п▓п╡п┌п╟б▌п╟п│п╡п≤п╟п▓я┌б─б⌠п╒б═п╟б═п╡б²п╟п▓я┌�