GB/T 12459  弯头 DN 100-1090ESR56

DN 100-10 90ESR56

LWN 100-150 RF B00 rf rf1M1.6 mF0

BI 500Г0150rf00 rL205-0RF S5-0.20N160 WN RF I S=62h40S2п61

WN150-63 RF/T2061538FR

WN25(a)-1500 rjJ Sc1200(b)

WN600(A)-16 RF

wn600-900 rf mF Sc

PL10B-2.5RF=240 b4=430 l3=242 b2=1700-1

20592' WN500-