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快速報價系列RTA步進電機驅動器MIND B5貨期好
快速報價系列RTA步進電機驅動器MIND B5貨期好
絲扣密封不得使用鉛汕麻絲。用厭氧密封膠密封的管接頭，養(yǎng)護期不得少于24H，期間不得進行試壓在熱水供應管道系統(tǒng)中，應采用內襯交聯(lián)聚乙烯（pex）的鋼塑復合管和內襯聚丙烯（PP）的管件.當采用橡膠密封時，應采用耐熱橡膠密封閣.冷水管所用管材配件不得用于熱水管進系統(tǒng)中。埋地鋼塑復合管道應有可靠的防腐措施。在水池（箱)沒水部分的管道應釆用內外涂槊鋼管及管件.泄水管、出水管應采用內外及管口端涂塑管段。

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產(chǎn)品質量認證是認證檢驗機構依據(jù)標準和相應的技術要求對產(chǎn)品質量進行檢驗、評定。經(jīng)檢驗合格的產(chǎn)品向產(chǎn)品所有人（送檢人）出具認證報告或頒發(fā)證書。產(chǎn)品在上市銷售前，質量認證是必須的。而產(chǎn)品能否持續(xù)穩(wěn)定運轉、耗能多少，還與產(chǎn)品設計、材料、元件特別是電機有關。效果：空氣凈化器的凈化效果，是以單位面積潔凈空氣率表示（記住：一定是單位面積）。權威檢測機構美電制造商協(xié)會（簡稱：AHAM），對凈化效果的檢測，項目為灰塵、花粉、二手煙。