qzhhsj
中国弯头管件行业转型升级之路_河北固元法兰管件有限公司 - 中频弯管
不锈钢管件设置坡度应符合下列规定:给水不锈钢管件安装的坡向应与不锈钢管件 介质流动的方向相一致，坡度应保持一致、坡向应顺直。给水横管应有0.002～0.005 ...
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