GB/T 12459  弯头 DN 350-Ⅱ-690EL4F5 RF Sch40Sbf

DN 350-Ⅱ-6 90EL4F5 RF Sch40Sbf

WN 150-1500 RJ Sch1600 Sch80h85)-16

PJ/SE 40(B)-10 RF S=4

PL250-10RF00RF0RFf0 RFB=550RF150J Sch43

SO350-16 RFh80rf s=5

1 RF 500-0.6i10â…¡RSฟฝ5 RJ ScF/data�at4070b1bRF

SO 250-150 RFRFSch8/F40-150RF0-2FF0/

bl0