（视频已更新！）2023国产精品自拍视频_久久精品亚洲热综合一本毛片_在线香蕉午夜影院_亚洲一区乱码电影在线_国产精品一级特黄毛片_a级三级片在线免费_巨茎爆乳无码性色福利_国产成人福利色视频_日韩18禁无遮羞国产网站_欧美黑人激情第一欧美精品

Heat resistance grade description:

According to the use of temperature:

General heat-resistant conveyor belt, the use of temperature ≤120℃, the material uses cotton canvas, EP canvas as the core;

A high temperature conveyor belt, the use of temperature ≤120℃, the material of cotton canvas, EP canvas as the core;

Two high temperature conveyor belt, the use of temperature ≤180℃, the material of cotton canvas, EP canvas as the core;

Three high temperature resistant conveyor belt, the use of temperature ≤300℃, the material of cotton canvas, EP canvas as the core;

Four high temperature conveyor belt, the use of temperature above 300℃, the material is made of cotton canvas, EP canvas as the core.