GB/T 12459  弯头 DN 125-Ⅱ-Sch4090EL9@X@b40F0

DN 125-Ⅱ-Sch40 90EL9@X@b40F0

SO350-150 RFF37

BL 10"-150 RF SO SchFM��

SO 600(B)-40 Mamp

PL 50(B)-16 RF

BI 1400 F/S16XXS

1 FF 800-0.25 δs=8FM1/69

BL 3/4"-150 FFFJs

BL15-150RF

LWN 12"-600 RF S1671F00-16rf+s=6 RFc20JRF219RF40@ST Sc