GB/T 12459  弯头 DN 50-Sch16090ES47124720FS/@ δ0

DN 50-Sch160 90ES47124720FS/@ δ0

3 RF 500-1.6Mn2c3/u00a3/u/60-12001.0/40

WN15-160FM.0/90-2800t5RF-1

PL10B-6FF08a

LWN25-600RF S=2-2.6000=308

SO 450-16 RF=3.6 NB455pampamp

BI 650F-4.0RF-160122ذ°MS��

pl700(a)-2.5rf1001п═р²п▓б╘п═

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