GB/T 12459  弯头 DN 40-490EL

DN 40-4 90EL

WN 350-600 RF Sch80S S=10

PL300(A)-2.5 FF/-300 RF S=810

PL500A-10RF/ampaA)-16RFmpamp;nbH40S80S

PL 550(B)-16 RF00fH=856 rfa=6200

LWN 2"-300 RF Sch40S-15

PL 25(B)-10 RF

PL400B-6RF C=2-30/6FF-1/800-/;amp;amp;amp;amp

PL15-100RF�

WN50-