GB/T 12459  同心异径管 DN 50×25-Ⅱ-6RC

DN 50×25-Ⅱ-6 RC

BL 300(B)-100 M

WN80(B)-16 RF

TPB-2

SO 20-150 RF

PL 400(B)-16 RF

PL 65(B)-16 FF

WN150-300 RF Sch80

WN 400(B)-63 FM S=12

WN 300-150 RF Sch40SRF60(B)-16 R16 RF0(B)-100 FMBFB.50b16.0 δ0 1200-s/@a 1000800-f/@B-1aR R(6F50 RF Sch40f-16