GB/T 12459  同心异径管 DN 40×25-2RC

DN 40×25-2 RC

2 A1950

WN 50-150 RF4839

WN 32-300 MBII 100003@

BL50A-16RF

WN15-900 RF Sch480ot12F10.5 K@RF@ RFR-771FF Sch80Srf@-RJ5-R RRF4 S=3.5@RF@4

WN40B-25T S=470-0./48-13Sch10snsoF 20/u00c3/6/92b)rf w3 s

2 B5F04F Saa3

BⅡ 19063

PL15(B)-16RFL40)/