Steam header belongs to the category of pressure vessel, its pressure capacity, volume should be corresponding to the supporting boiler. The main compression elements are head, housing, etc.
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The automobile seal is one of the important parts of the automobile and it is one of the important parts that determine the quality of the whole automobile. It is widely used in doors, windows, body, seats, sunroofs, engine boxes and trunks, etc. It has the important functions of waterproof, sealing, soundproof, dustproof, antifreeze, shock absorption, warmth preservation and energy saving. Sealing strips for automobiles are mainly made of EPDM rubber with good elasticity and resistance to compression deformation, aging resistance, ozone, chemical effects, and a wide operating temperature range (-40°C~+120°C). Combining with compact construction, it contains unique metal fixtures and tongue buckles that are durable and conducive to installation.
There are several ways to classify automotive sealing strip products. They are usually classified according to factors such as the name of the installation site (part), the type of material, the number of composite materials, and work characteristics. Among them, the classification according to the name of the installation site (part) is the most commonly used method. It includes the engine compartment seal, the front and rear window seals, the door frame seal, the door seal, the door glass guide seal, and the lower door dust cover , door sill inner and outer sealing strips, side window sealing strips, sunroof sealing strips, roof lid sealing strips, trunk (luggage) sealing strips, etc.
With the advancement of science and technology, the development of the automobile industry, and especially the emergence of emerging materials, people are demanding more and more cars, and the requirements for car weatherstrips are constantly being improved. The rationality of the structure, the humanization of the design, the flow of the production process, the automation, the product's safety, environmental protection, recyclability, matching aesthetics, and diversity are the properties of the automotive seal companies that need to be considered.
In recent years, China's automobile sealing strip industry has achieved a leap-forward growth. At present, there are 20 key production enterprises in China's automobile sealing strip industry, of which 6 are joint ventures, accounting for 33.3%. These companies are widely distributed around the automotive OEMs to maintain a reasonable economic radius. However, due to the large number of production enterprises in China's automobile sealing strip industry and the relatively small scale, it is difficult to form a scale climate, which is far from the market competitiveness of foreign companies. With the gradual recovery of the international economy, the demand for automotive seals will increase year by year. The automotive seal industry will experience a period of rapid development after it has undergone the baptism of the 2009 blowout market. Since 2009, especially in the second half of the year, major automotive seal companies have clearly felt that their own production capacity is seriously inadequate, they have joined the ranks of expanding production capacity, and once activated the automobile sealing strip equipment manufacturing enterprises. The order of equipment, the difficulty and importance of delivering the product. However, when upgrading production capacity, we must not only consider the urgent needs of the immediate situation, but should combine the factors such as improving labor productivity, quality improvement, product structure upgrading, and technological progress to comprehensively increase the company's overall production capacity. 
Boiler Steam header is the main supporting equipment of the boiler to distribute the steam generated by the boiler operation to various pipelines, it also serves as a reservoir that feeds steam to the individual heating circuits. The boiler steam header must be large enough to virtually eliminate pressure drop between the boiler and the beginning of the circuit.