HG/T 20592  法兰盖 BL 500-2.5 RF1019.05 h

BL500()-2.5RF1019.05 h

PL25(B)-16RF

LJ 22"-600 LM Sch120 Lв�r�’hg/f

WN 20-150 RF Sch80

WN 32(B)-25 RF(B/.2

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

1 RF 400-1.0 δs=10

WN50-150RF Sch160S)0 Ra

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