HG/T 20592  法兰 WN 20(B)-25 FF0/-1.0ch1AA=61.1 K=120 LS=4

WN20(B)-25 FF0/-1.0ch1AA=61.1 K=120 LS=4

WN65-150 RF B=68.1 xxs

SW1-2/1"-300 RF)-10rfLv��п│п⌠п▌п╡Б�

WN20-150 RF Sch40=12.5 &ampampa7m(EL170-

PL15(B)-16RF2515-=4

DN80-PN63 PLB=96-1

bl20-300fm

WN250(a)-10rfh40.RF-20-

SW15