GB/T 12459  弯头 DN 40-Sch4090EL10K 800A

DN 40-Sch40 90EL10K 800A

wn32(b)-63t6-

BL25(A)-16 RF 0F01

wn15-25rfF-800-101

PL50(B)-10RF HG/0-150

47023 FM700-6.4h4u

SO 450(B)-10 RFRF00-40RF

bl40-25t0265RF �6r.F

PL 10(B)-10 RFm6 RH0@wn40�daFlogis0‚&

WN 100(B)-150 RF-R2150RF080h80 RF B=2F3/u0