GB/T 12459  弯头 DN 100-Sch4090ELlF100-F7F=313

DN100-Sch40 90ELlF100-F7F=313

BI 900 H=280.0F2RFf40F6FF16 g=4 f1=2.5-1�

BL500-16RF/8K.08506r.m-0M B=F6/500hRF

WN40(A)-100 FM S=5.5.7h700-1.6/

47065.2 B1 800-8

SO 125(B)-6 FFch40650 RFRF S0-1.6 δ=5 S=61M10000

BL 6"-300 RF

SO 200(B)-25 T

BI 120