?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 閾佷簳鐩栨壒鍙?- 璐靛窞瀹変俊鍏ㄥ晢璐告湁闄愬叕鍙?

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铁井盖批?/h1>
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球墨铔R井盖主要q墨铸铁打造出来的井盖Q这U井盖质量的好坏q扯到了球化率的问题。处理铸件的常用涂料是防锈沥青漆了Q当然球?a href="http://wahvc.cn/ztjg/" target="_blank">铔R井盖的表面也是经q喷涂防锈沥青漆处理的。球墨铸铁井盖有一个优点,是׃球墨铔R强度高、韧性好Q得球墨铸井盖要比同类型的灰口铔R井盖?0%左右?

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此文关键?a href='/key.aspx?k=%e9%93%b8%e9%93%81%e4%ba%95%e7%9b%96'>铔R井盖,铁井盖批发h?/a>,铁井盖批?/a>,