成人免费视频一区 I 午夜影院毛片 I 亚洲香蕉网站 I 午夜精品在线播放 I 成人免费看片'在线观看 I 免费日韩伦理电影 I 性日本xxx I 日韩中文不卡 I 亚洲成人伦理 I 亚洲欧美电影在线观看 I 亚洲久久色图 I 日本理论视频 I 日本丰满少妇一区二区三区 I 亚洲成人av免费观看 I 医生强烈淫药h调教小说视频 I 91喷水 I 在线看a网站 I 自拍日韩亚洲一区在线 I 日韩欧洲亚洲AV无码精品 I 欧美激情国产精品免费 I 牛牛影视一区二区三区 I 又粗又黄又猛又爽大片免费 I 精品黄色一级片 I 福利社污 I 国产电影精品久久禁18 I 国产羞羞小视频 I 黄色av资源网 I 国产精品1区二区 I 性一爱一乱一交一视频 I 热久久精彩视频 I 精品人妻久久久久久888 I 亚洲一区av无码专区在线观看 I 国产精品午夜免费福利视频 I 国产嫩草影院在线观看88 I 97在线 | 亚洲 I 97av精品 I 国产在线精品国自产拍影院 I 狠狠色噜噜狠狠狠狠av I 三区在线播放视频观看免费

1) Stainless steel handles should be thick, otherwise they may be dented: good stainless steel handles use pipes with a wall thickness of 1.2mm. There are also many classifications of stainless steel, and the prices vary greatly. It is advisable to choose brand manufacturer AISI304 grade stainless steel as much as possible.

The stainless steel handle of the thin tube is quickly held at the same temperature as the hand, while the thick tube is cooler; Tapping the thick tube with your fingers produces a clear and crisp sound, while the thin tube can be a bit dull. The handle has been using pipes with a wall thickness of 1.2mm for many years.

2) Brass, zinc alloy, and aluminum: It is particularly important to note that if subjected to force, zinc alloy materials should not be too thin and should not be used for functional accessories. The author has conducted statistics on the steel gate anti-theft door in a certain residential area on a certain day. After three years of occupancy, more than 60% of the handles were disconnected from the foot seat, because the zinc alloy accessories were too thin and inferior zinc alloy was used. It is difficult to distinguish the material of all materials after surface treatment, so customers must ask clearly.

3) Natural stone, natural wood, plastic: There are many materials used to make stainless steel handles, and each material has its own advantages and disadvantages, which will not be elaborated here.

Article source: Stainless steel handle manufacturer http://m.scemt.com.cn