In the construction process of modern cities, the equipment with pipelines such as pressure cookers, large-scale hot-adding equipment, and oil storage tanks will involve the problem of cross-section sealing in the actual application process, so that the head is born. It is on the basis of sealing equipment after countless people's efforts, through professional transformation. Today's products have a great change in the selection of raw materials, different from the previous selection of steel materials, but the selection of new high pressure and heat resistance, compression ability of the raw materials.

The head is different from the previous manhole cover. In essence, there are essential differences in the selection of construction materials. The head is a new type of polymer material with high hardness, light quality, tough material and corrosion resistance. It has the advantages that the previous materials don’t have. It can be applied to various places, and has a long service life, excellent quality, and no maintenance problems. Head function is more and more diverse, so its development is more and more strong, in the major mechanical industry frequently used in the sealing material.Its function has been greatly improved, in the compression ability of its excellent performance to a large extent, the sealing is also better than the original.

The head has a very strong anti-corrosion ability. Its leaving factory standard is to soak for 48 hours in sulfuric acid, and the loss of mass isn’t more than one percent. It can be imagined how powerful its anti-corrosion ability so people don't need worry about long-term. The sun and rain will cause damage to the head, and the manhole cover will be brittle and crushed, resulting in an accident. The ability of the head in the pressure bearing capacity is after the professional software test, and the new polymer material is forged by high temperature and high pressure, which can bear more than 40 tons.

Now large-scale implementation of urban and rural integration, the rising of many towns in China, vigorously developing industry, in the development of component and equipment has also made great progress, so as to provide conditions for the development of the head industry. In the current urban construction can’t be separated from the construction of various underground facilities, and at this time, the emergence of new material head, for the underground construction and ground construction between each other to provide very superior conditions, make the urban construction more smooth.

On the contrary, the urbanization construction also greatly promotes the development and progress of the head industry, making it a promising prospect. To evaluate whether an industry product has development prospects, it is necessary to see whether its functions are rich and varied, whether the scope of application is wide, whether the characteristics change with the change of the environment, just the head to meet these characteristics, there is a very considerable development potential. The head has rich and varied functions, strong corrosion resistance, very strong compression and load-bearing capacity, low manufacturing cost, no recycling value of the material itself, and can prevent theft, all of these characteristics are the reasons for the head has been developing for many years.

Over the years the head after many experiments, replacement of a variety of components, the pursuit of quality perfection, so as to get better development. In fact, the development of the head is very smooth, and the trend of development is very good.