GB/T 12459  弯头 DN 250-Ⅱ-390EL1248 hpampampquot

DN 250-Ⅱ-3 90EL1248 hpampampquot

1 FM 400-1.6 δs=6 S=46

1 c-fm600-1.6

PL 350B-10 RF

bl 50-25 rf00--=343506 RFH

WN 2"-150 RF Sch40

SO100-40G=10.5 &ampampa

PL350(B)-10RF C=15

pl250-10rf

SO 20(B)-150RF)-6.0RF1--150rc15.4 b=450 RF-6n400-600r0