GB/T 12459  翻边短节 DN 500-Sch10SLJS δ=5

DN 500-Sch10S LJS δ=5

SO25-300T

SOP FF 10K 150A

HG/T20592-2009 BL500-25RF

BL125-25RF

DN80-PN16 PL RF Ⅱ

BL2"-150 RF

BL 80-16 RF/2-250040S�2600-s/@F06149BL32

BI 600

BL 5"-400 LT f1-16n80(80Â5408J2A=F6m3B)-40 RF0S/ d=1 C00 RJ0-2500 F81MJ