GB/T 12459  同心异径管 DN 150×65-Ⅱ-5RCchker=jmxg2061

DN 150×65-Ⅱ-5 RCchker=jmxg2061

JWN 50×80(B)-16 RF S=5

WN 250-150 RF

470023fm600-4.05F 9FFR26h40а

WN40-300 RF Sch40S

WN50(B)-63 m S=4

GB/T9124.1-2012PL600(B)-40RF

JWN 80×100(B)-16 RF S=4

WN80-150 RFu0pampampampampampampampampq

JWN 65×100(B)-16