GB/T 12459  弯头 DN 300-1090ELF-180/=120.6-1..20(

DN 300-10 90ELF-180/=120.6-1..20(

WN65B-63FMf38 H=130m

WN80(A)-100RJu4/0TSchm16fm

bl300(b)-10RF0-40.0F0-1RF

a 590C=0 RFB=258FF50

PL500-25FFC06 R000-1.0F wn 200

PL 50(B)-16 FF b=1

WN 40-300 RF20.0160F B00F B1

bl150(B)-16 RF S=6F-6 未=1000 H=165cm1

PL