The combustion performance test is mainly to evaluate the behavior of the material in the fire, including the difficulty of burning, the release of smoke and toxicity, and the propagation speed of the flame. For building insulation materials, their combustion performance is directly related to the safety of buildings and people's lives and property safety.

According to the standard of "Classification of Combustion Performance of Building Materials and Products", the combustion performance of building materials and products is divided into four grades, which are non-combustible materials A, non-combustible materials B1, combustible materials B2 and flammable materials B3.

As an efficient, lightweight and environmentally friendly thermal insulation material, rubber insulation pipe has excellent thermal insulation performance, moisture-proof and waterproof performance, and convenient construction and strong adaptability. However, these excellent properties can not directly explain the quality of its combustion performance. In fact, the combustion performance of rubber insulation pipes may be affected by a variety of factors, such as the production process, the nature of raw materials, the type and proportion of additives.

At present, there are two combustion performance grades of rubber and plastic insulation pipes, respectively B1 and B2. B1 class materials are required to encounter open fire in the air or under the action of high temperature is difficult to catch fire, not easy to spread quickly, and when the fire source is removed, the combustion stops immediately.

According to the relevant regulations of the state, if high-rise building materials, large buildings, public buildings, etc. need to use rubber and plastic insulation materials, its combustion performance level should reach B1 level. The main purpose is to prevent building insulation materials in a fire may become a way of fire spread. If the burning performance of the material is not good, it may aggravate the spread of the fire and bring threats to people's lives and property safety. Therefore, it is very necessary to evaluate the fire risk of materials through the combustion performance test.

Therefore, rubber and plastic insulation pipe must be tested for combustion performance. This is not only to meet the requirements of national and industry standards, but also to ensure that their behavior in a fire can meet safety standards. Therefore, when selecting and using rubber insulation pipes, materials that have undergone combustion performance tests and meet the requirements should be selected to ensure the safety of buildings and the safety of people's lives and property.