GB/T 12459  弯头 DN 1200-1290EL

DN 1200-12 90EL

BL 150-16 RF/data

DN 15-2.7 90EL

WN 140(B)-25 RF

SOP FF 5K 1000A Sp

WN 25-150 RF S=9

WN 150(B)-25 RF

PL 80(B)-16 RF

BL65-16 RF

DN125-PN63 PL RF Ⅱvok/F°wn S=4.55f hg/h=150 RF B=Sch80S آ ذ’�1.0/6b)s.0f0RFc�-16rf0f1000-1.0@W