GB/T 12459  弯头 DN 65-Ⅱ-1290ELF50ASch4500 R

DN 65-Ⅱ-12 90ELF50ASch4500 R

WN 100-1500 RJ S=20

PL100(B)-16 RF

wn40-10 rf sch40H16p

PL150(B)-25RF

TPB-4-7.5-20

WN25-2500RF Φ33.7x9.0RSM

WN 24"-150 RF Sch40

WN 300-150 RFo400-10rf0F0-3

SO 500(B)-10 RFB��° wn25(b)-40rf20615-20096C=10F Ⅱ6-