GB/T 12459  偏心异径管 DN 800-Ⅱ-3RE

DN 800-Ⅱ-3 Re

wn200-160rf56 R

SO 50-40 G BFT2050710Rs@Fm71@В°0rf671FsFh80@40@ RF SCH80RFSCH3

hg/t20592-2009 pl40(b)-25 rf

wn25-25fmr SCH80RF/@5@050@40@S0 FF/�ƒ R400(b)-104..5 B

WN200-16RFM SchRJaRF S

PL400-10 RFrf40RF106 RFF SRF WN50(-F@RF

wn3