GB/T 12459  弯头 DN 350-Ⅱ-290EL=4-1

DN 350-Ⅱ-2 90EL=4-1

SO40-300 G.H60Sc

1 FM 800-0.6/46 δs=8F B=4.50-2.5=8

bl32(b)-10fm503 rf15

LWN 100-1500 M S

WN250(A)-2500RJп╟п÷п╒п┴п╟п▒я┌б∙б≤п╟п÷я┌б∙б═п╟б

47023 fm500-2.5 ÃÃâ�