GB/T 12459  等径三通 DN 1200-Sch10STS10 A=108RFs/

DN 1200-Sch10S TS10 A=108RFs/

LWN 40-150 RF

SO60(B)-16MRFsc=1⬠wnF Sq00(B)-1000

LWN25-150RF H=159 B=27ch4=1160&/80 Apam

A BL 800-300 RFF-6=

BL150-150 RF

5 M 750-1.6 δ0=12-4.o3zt S=0-1.0651=FF6/=

NB/T47023 FM800-4F.28-280F130 RF12- R0-4.

BL40(B)-