用途：主要用于铝管，不锈钢管等课桌椅，设备上。

特性：耐磨性强，韧性好。

颜色：黑色，白色可定制

单位：mm

咧如：你的方管外径为36毫米(mm），那就买“方36”规格的管塞。

Uses: Mainly used for aluminum tubes, stainless steel tubes and other desks, chairs and equipment.

Characteristics: strong wear resistance, good toughness.

Color: black, white can be customized

Unit: mm

For example: if your square tube has an outer diameter of 36 millimeters (mm), then buy a "square 36" gauge pipe plug.