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Steel Steam Boiler Manifold Headers With Longitudinal Welded Pipe ASME Standard

Categories Boiler Manifold Headers
Brand Name: HDB
Model Number: Boiler Manifold Header
Certification: ISO9001 , SGS , TUV , ASME , EN
Place of Origin: Jiangsu , China
MOQ: 1 Set
Payment Terms: L/C, T/T
Condition: New
Working Temperature: 445 Degree
Type: Ultra Super Critical
Material: 15CrMoG / 12Cr1MoVG
OEM: Yes
Color: Customized
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    Steel Steam Boiler Manifold Headers With Longitudinal Welded Pipe ASME Standard

    Carbon Steel Manifold Headers For Boiler Economizer and Water Wall in Power Station
    Product Description
    Headers collect and distribute steam or water from or to a series of smaller pipes or conduits. They are made of carbon or ferritic steel, generally of the same grade as the piping systems. Unlike piping systems which are usually butt welded and bent, headers are straight.
    1Headers form an important part of all types of boilers.
    2Steam from the generating tubes is collected in headers which are therefore always under pressure.
    3This pressure may vary from 300 psi to 2000 psi. Since headers are always under pressure, the utmost care is taken by us while fabricating them.
    4Depending on the generating capacity of the boiler the header sizes fabricated by us vary from 100 mm to 600 mm NB. The stubs of various sizes are very carefully welded to the main body of the header to provide the desired openings from the header.


    Details


    Header is not an independent component, but a part of water wall, economizer, super-heater and other components, that is, there are water wall header, economizer header, super-heater header. The function of header is to collect or distribute steam and water working fluid, reduce the pipeline of working substance transportation and connection, and reduce the numbers of holes in the drum, which is conducive to improving the safety performance of the drum. The lower header of the water wall near the grate on the both sides of the furnace wall prevents coking on both sides of the grate, so it is called the coke-proof box.


    The header is actually a thick diameter tube connected with many heating surface pipes. It is made of seamless steel pipe and welded flat heads(end caps) at both ends. There are many holes in the box for welding or expanding the pipe. Both ends of the economizer tube and the superheater tube are connected to the header, and the lower end of the water wall is connected to the header. The upper end can be connected to the header, and a few pipes can be drawn from the head to the drum, or the upper end of the water wall tube can be directly connected to the drum.


    Features


    The pressures and temperatures that headers have to withstand depend on the component to which they are connected. A header connected to an economizer or to water wall panels is subject to less severe requirements on the material than a header connected to superheaters or reheaters.


    Depending on the temperature and pressure of headers, Vallourec supplies tubes in carbon steel to high-alloy ferritic steels such as T/P91 or T/P92, with sizes ranging from 88.9 mm to 406.4 mm.


    Classification

    MaterialCarbon steel,Alloy steel,Stainless steel.
    LengthAccording to costumes requirements.
    Temperature Range300℃~1500℃
    Diameter(OD)76mm~914mm

    Application

    CFB distributing economizer header with high welding technique have water wall header, superheater header, economizer header and so on, it acts as collection, mixture, re-distributing working medium, as the structure, it can be classified as the end cover type( end enclosure) and necking down type.


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    Quality Steel Steam Boiler Manifold Headers With Longitudinal Welded Pipe ASME Standard for sale
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