GB/T 12459  弯头 DN 100-Sch4090ELSchc300A16rt40 H1 HGSF s3

DN100-Sch40 90ELSchc300A16rt40 H1 HGSF s3

TPB-2 δ=8 S1=8rf T rf(5.7)000-1mh355/ A=45.6��ҳР25rf 法�

47023 RF400-1.6/44-105

HG/T20615-2009 BL20-150 RF

WN 350-600 RF Sch160

BL0(B)-300RF MF165

wn 100-600 RF8 GBd

WN15-1500 RF Sch40

BL25-40 FM

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