GB/T 12459  同心异径管 DN 80×50-Ⅱ-8RC0 rf0-RFS

DN 80×50-Ⅱ-8 RC0 rf0-RFS

WN15(B)-160RF

PL 65(B)-16 RF13.5amp

WN 450(B)-16 RF

PL 25(B)-10 RF

WN8(B)-25 RF19пҝҪ0t0@bfdRF@A 10-4.@Rh-0F0@

DN65/PN16/12F

B BL 46"-300 RF

WN 200(B)-40 RF S=8

PL 32(B)-10 RF B=35 d=74000H SGRJ��JsRF@F S��3