GB/T 12459  弯头 DN 25-390ES2-2-2.51SchJ B=f

DN 25-3 90ES2-2-2.51SchJ B=f

TPB-1 خ´=6 S1=8

WN40B-63FF S=4.6/q-85

PL500A-16RFF1.0/60-6=

PL 150(B)-10 RF40S=7mf/

LWN14"-300 RF Sch80

B BL 22"-600 SM.40600TГRF S=16F S=5443RF@

SO250(b)-10rf—& ‡é¢˜FM2

DN25-Class900 WN RF S=4

wn