2015年6月29日星期一

Characteristics of A Stainless Steel Seamless Instrumental Tube


Tubes are normally manufactured by rolling sheet metal, and then welding the two edges together by passing electric current. The electric current heats the two edges sufficiently enough to melt the metal and then weld them together. In a different process, rolling solid billets or starting ingots over cross rollers can produce seamless tubes. Piercing the centre of the billet by a mandrel produces the central hollow of the pipe. Seamless tubes are stronger than the tubes which are manufactured using the standard process. They are normally costlier than the standard tubes as the manufacturing process is more critical.
Instruments can measure the different parameters of fluid products during the manufacturing process. Connection to the main flow is through Stainless Steel Seamless Instrumental Tube.Exposure to high level of corrosion occurs when they come in contact with chemicals contained in the product. Normal tubes manufactured under standard processes are not used here as the longevity of instrumental tubes is very critical. Preference is given to seamless tubes over standard tubes in this case. These tubes last longer and the requirement for replacements may not be there for long durations. Replacing these tubes would invariably cause interruptions in the workflow of the manufacturing process.
Heat exchangers are another area where corrosion can create a lot of problems. The heat exchanger is made up of a shell with a large number of tubes running through it. In a chemical manufacturing process, one fluid runs through the pipes while another fluid runs through the shell outside the pipes. Heat from one fluid is transferred through the sides of the pipe to the other fluid flowing through the shell and vice versa. Both fluids can be corrosive and any damage caused to any of the pipes will result in the two fluids getting mixed together. To avoid this situation from occurring frequently, heat exchangers are built with Stainless Steel Heat Exchanger Tubes. A mixture of chromium, molybdenum and nickel in varying proportions with steel gives the maximum efficiency of stainless tubes used in instrumentation and heat exchangers. It produces a tube made of an alloy that is much more durable and corrosion-resistant than the normal steel tubes. The seamless tubes manufactured in this way are called duplex seamless tubes which have different gradations, according to the mixture of external elements used to make the alloy. The present trend is to use these tubes in manufacturing processes where corrosion can make a big difference.
Heat exchanger and Condenser; U Type coil pipe ;
Petroleum pipeline ; Sea farming;
Evaporator; Fluid Transportation Piping etc.
First packaging with moisture-proof paper;
Second packaging with kraft paper;
Third packaging with foam plastics in all side of plywood case;
Finally packing products in plywood case
ASTM B338 Gr2 Titanium Tube

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