GB/T 12459  同心异径管 DN 100×65-Sch40RC=54 h=F–F/3FMh00 RF Sc.6.

DN 100×65-Sch40 RC=54 h=F–F/3FMh00 RF Sc.6.

PL 15-300 T0/f sch4 s= Af70-1650m RF S.25/24RF50

SO 450-150 RF s=8600MLF-150 RF620δ1chSBL RF �FSRF6.(B�آ°ذ ز²ธะrf s=8R477.5 RJ R1cB80

wN600-16RF+HG=T25198-2009

WN400-25RF S180EL��

PL