GB/T 12459  弯头 DN 20-690EL-9900H40 H=2722.

DN 20-I-6 90EL-9900H40 H=2722.

bl450(b)-16 m608126-220

WN 1000(B)-10 RF S=Rcs2 20=4100-0F0083/

SO80-150RF1B=26 b=.5

A WN900-900 RJ16=560

wn25B-63MFF S=/company/24

WN100-150 RF S=5.5 H1=

3 T 1700-6.420δ0=20=4FF b� s30)-25m003

WN 450-16 RF S=799 f1