GB/T 12459  同心异径管 DN 100×20-Sch60RCS1a5 RJ�@ker1h1@5@ RF0F0J2S00-

DN 100×20-Sch60 RCS1a5 RJ�@ker1h1@5@ RF0F0J2S00-

LWN 40-150 RF

PJ/SE 65(B)-16 RF S=3

SO 350(B)-10 RF

wn80(b)-40m=

so 25-150 RF

DN900/PN6/01B

BL 500(B)-10 RF

SO 350-10 RF

WN 100(B)-16 RF S=30c0m416 RF B=7FFS=8 Ds SchRF Ⅰ��ธฐย เธข