日韩师生制服第一页中文字幕_亚洲人妻无码视频_天天性爱视频网站_后入丰满内射在线_7788桥矿超棒体验_成人大香蕉在线_一到久高清无码免费_免费观看aⅴ片在线播放_秋霞鲁丝片无码一区二区_欧美另类综合专区

2021-12-12

One: Determine the power of the heating tube according to the working environment. The power setting is mainly divided into two types: dry heating electric heating tube and liquid heating. For dry heating, a pipe with a length of 1 meter is generally used with 1KW power; for heating liquid, a pipe with a length of 1 meter is generally used with a power of 2-3KW, the maximum Can not exceed 4KW power. (This is based on the pipe diameter of 8MM, the power produced by different pipe diameters is different, please contact our sales staff for details)

Two: The choice of material:

1. Dry-burning double-head electric heating tube is generally made of 304 or 321 material (parts need to have fins)

2. For liquid heating, ordinary heating water uses 304 material, high-end customers can choose 321 and 316L materials; if it is oil, you must use 321 and 316L materials. For those with weak acid and alkaline liquids, stainless steel 316L and 310S can be used. If there is strong acid in the liquid, it must be made of 840, 800 material and titanium material.