GB/T 12459  弯头 DN 25-490ES500(f

DN 25-4 90ES500(f

SO 3/4"-600 SFM

pl700(a)-2.5rf1001æ—&ampampampampampampampampampampampampampnbspæ&ampampampampampamp;nbsp;‡é¢˜

wn25-40 fm

wn100-150 rf s=3.1 h1=8

wn350-150 rf b=330

WN50-300 RF S=12

wn250(b)-100m

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