GB/T 12459  弯头 DN 100-12.590EL

DN 100-12.5 90EL

TH 4"-600 ST

BL500()-2.5RF1019.05 h

PL25(B)-16RF

LJ 22"-600 LM Sch120 Lв�r�’hg/f

WN 20-150 RF Sch80

WN 32(B)-25 RF(B/.2

WN20B-600RFп╟б═п╡б²п╟п▓п╡п┌п╟б▌п╟п│п╡п≤п�

1 RF 400-1