Pressure vessel and boiler quality steel are commonly found throughout the oil industry (including inshore and offshore), the petrochemical industry and the gas production industry. The companies in these industries set the highest demands in terms of quality, testing and conditions of supply, and we have all the necessary expertise to meet these demands.
In recognition of the increasing need for pressure vessel Steel Plate to demonstrate HIC Resistant properties. Our product is also particularly suited for pressure equipment where wet H2S corrosion can be a problem.
Pressure vessel steel plate covers a range of steel grades that are designed for use in pressure vessel, boilers, heat exchangers and any other vessel that contains a gas or liquid at high pressures.
Familiar examples include gas cylinders for cooking and for welding, oxygen cylinders for diving and many of the large metallic tanks that you see in an oil refinery or chemical plant.
There is a huge range of different chemicals and liquid that that stored and processed under pressure. These range from relatively benign substances such as milk and palm oil to crude oil and natural gas and their distillates to highly lethal acids and chemicals such as methyl isocyanate. So of these processes need the gas or liquid to be very hot, whilst others contain it at very low temperatures. As a result there is a wide variety of different pressure vessel steel grades that meet the different use cases.
In general these can be divided into three groups. There is a group of carbon steel pressure vessel grades. These are standard steels and can cope with many applications where there is low corrosion and low heat. As heat and corrosion have more effect on the steel plates chromium, molybdenum and nickel are added to provide additional resistance.
The manufacture of pressure vessels is tightly regulated as a result of the risks involved and as a consequence the materials that can be used in vessels is also tightly specified. The most common specifications for pressure vessel steels are the EN10028 standards – which are European in origin – and the the ASME/ASTM standards which are from the US.
Our strength is in the very high specification pressure vessel steel plate used in the oil and gas industry and specifically in steel plate resistant to Hydrogen Induced Cracking (HIC).
Pressure Vessel Steel Plate,Boiler Steel Plate,Vessel Plate,Pressure Vessel Plate,Tank Plate Shandong Guanzhou Iron and Steel Group Co., Ltd , https://www.shansteelsupply.com
Nowadays, auto-shift cars are increasingly favored by riders due to their simple and convenient advantages, and they gradually become the first choice for cars. As we all know, the automatic transmission is not prone to problems, but once it fails, it is also a headache. Therefore, vehicle owners need to pay more attention to maintenance and find problems in a timely manner so that they can be solved as soon as possible to avoid expensive repairs and damage to the gearbox.
The automatic gearbox is different from the manual gear change mechanism of a general gear train. Its structure includes multiple sets of friction plates and brake pads, and special hydraulic axes are used at the same time. Therefore, for the general car owner, the disassembly and maintenance of automatic gearboxes All need professional knowledge and technology, but through a simple method to quickly determine the merits of its working conditions, in order to deal with it in a timely manner.
First, the automatic shift time is too long or too short. General automatic gearboxes have specific shifting speeds and speeds. If a sudden shift is found to be too long or too short, this means that the transmission ratio of the gearbox is disproportionate, and the speed of the engine is too high. What's more, the gearbox is not shifting, which shows that the gearbox is out of order.
Second, the car slipped or impacted. If the D or R gear does not move, or if the car reacts very slowly, or if the engine speed is high but the vehicle speed is very slow, it means that there is something wrong with the mechanical transmission inside the gearbox.
Third, the smell generated inside the box. The gear box body is operated by hydraulic oil. When the oil temperature is too high, some combustion will occur and these odors will be transmitted. This means that some of the actuator components in the gearbox are not working properly.
Beware of the pitfalls of the automatic gearbox repair market. The automatic transmission of the car has malfunctioned. The owner often drives the car to the car 4S shop for repairs. Some 4S shops generally offer advance quotations before the inspection, and the prices are between 1-2 million (intermediate sedan and mid-level sedan). Or 3-4 million (luxury cars), and after the actual inspection, the actual quotation will have more than doubled, precisely because of the lack of automatic transmission professional maintenance testing equipment and technical force, 4S shop forced to replace the high internal gearbox Price components, such as valve bodies, torque converters, etc., are close to the price of a new gearbox assembly, often leaving the owner miserable, and some very small faults may be diagnosed as overhauls. money.
If you do not need to repair, you will be able to solve the problems of automatic gearbox setback, impact, slippage, abnormal noise, high temperature, etc. For the owner, it is undoubtedly the best, both bypassing the trap of auto repair, but also saving the cost of major repairs. , not to damage the performance of the gearbox. According to data from the Automatic Transmission Maintenance Association, more than 90% of automatic transmission faults are caused by overheating of Automatic Transmission Fluid (ATF), resulting in stubborn dirt and impurities in the automatic transmission, and clogging of the valve body. The oil pressure cannot be controlled. At the same time, the components of the gearbox are worn out, followed by setbacks, shocks, slippage, and noise.
Quick and easy identification of automatic transmission faults is important for quickly resolving problems with automatic transmissions. If automatic transmission faults occur, they should be resolved early.
Quickly identify automatic transmission faults