??????è??D??·§
2ú?·Dío??o ZSPQ
2ú?·?ú???o DN20-400
2ú?·?1á|?o 0.6~10.0Mpa
2ú?·2??ê?o ?y????2?Da????o??e???è
áa?????°?o 15901687301
ZSPQ??????è??D??·§??ê??o
ZSPQ??????è??D??·§óé?D???ú11ó???????è??'DD?ú11×é3é???D???ú112éó??±í¨??×ùD?3é??DN20·§D??a?????ò??DN25??200·§D??a?????ò????óD?á11?ò????2ù×÷·?±???ê1ó??é?????ì?ù?a±??èì??????÷òaó|ó?óú?T?ó?ê???T??á???òoì?????ì??é?ê??òa?ó?ì?ù???ü1?±????ì?ù·?????×?????????í3?D?? 2ú?··?o?GB/T4213-92??