GB/T 12459  弯头 DN 100-SCH8090EL150.0S=10/N15050F S=8

DN100-I-SCH80 90EL150.0S=10/N15050F S=8

PL300(A)-2.5FFfrf�H805Sch40

SO350(B)-16 RFSch8024023rf b0

WN 80-300 RF S=8.2wn8fb1=17ch80

WN25-300 RF S=3.6/d16RF

WN100-150 RF 40SH50RF0fc=00t/S922155

PL350A)-16 RF

wn80a-16rf)-

47023 fm500-1.6 δ60

wn125(b)-