GB/T 12459  异径三通 DN 450×450×32-Sch140TR

DN 450×450×32-Sch140 TR

PL76B-16RF,SRF H/0RFSch40Spa

PL600B-6 RF HG/Tet

PL20-16RF B=27 L=M1

PL80(B)-16 RF0-2.5B)-16 RF b=3 R

pl800(b)-2.5 rf d=1005��12

WN50-300 RF S160h WN RF I S=62h40S2п61

PL150(B)-10 RF ’ย

WN 150(B)-25 RF S=5.5

DN80/PN40