GB/T 12459  弯头 DN 500-Sch16090ESR-1.0F

DN 500-Sch160 90ESR-1.0F

BL200-40RF3073FFBF/1

JWN 350×450-150 RF Sch40S08-161J9om/@WN162.0REF.RF0SRF@WN

BL65-10ff/c3/HB

WN 300(b)-100 RFf6 RF011.0 ãžâ

WN 300-100 FM S=100097/50 δs=1

WN 300-150 RF1=3 b=30000¦

BL350-63FF(

WN15-600RF SCH400

WN 300