GB/T 12459  弯头 DN 25-Ⅱ-Sch4090E3DF0(b

DN 25-Ⅱ-Sch40 90E3DF0(b

bl10-100fm4/

BL 2 1/2"-900 RJ4fo RF sch160sR

pl250b-6rf d=1005ypf

LWN 250-150 RF.F=1j

pl65-16rfH)-1h80FMsch40(b)

SO 250-16 RF202.51000-10 MF5.

pl100(a)-16 rf0-1)-@PL100(B)S=11/u-900 RF R=232=32

PL 80(B)-16 rf2.40 RFS=6