ASME Standard Horizontal Water Tube Manifold Headers for Power
Plant
What is boiler manifold headers?
- Manifold header is also called header, it is not an independent
component, but a component of water wall, economizer, superheater
and other components, that is, water wall header, economizer header
and Superheater header. The function of header collects or
distributes steam and water quality, reduces the pipeline of
working substance transportation and connection, and reduces the
number of holes in the drum, which is conducive to improving the
safety performance of the drum. The lower header of the
water-cooled wall near the grate on both sides of the furnace wall
prevents coking on both sides of the grate, so it is called
anti-coke 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
to weld or expand 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
header to the upper drum, or the upper end of the water wall tube
can be directly connected to the upper drum.
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What is the classification of manifold headers?
Material | Carbon steel,Alloy steel,Stainless steel. |
Length | According to costumes requirements. |
Temperature Range | 300℃~1500℃ |
Diameter(OD) | 76mm~914mm |
What are the advantages of HDB manifold headers?
- 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.
Why should you choose HDB
- 1100 employees, 400,000 ㎡ with fixed assets amounting to USD
110,000,000, 34 years experience, ISO9001, SO3834, EN12952
certificated, 150km expressway to Shanghai,60km state road to Suzhou or Wuxi, this is how we keep superior
quality and competitive offers for global valued customers.
- Our main products cover Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired,
coal-water-slurry-fired and garbage-fired steam/hot water boilers,
organic heat carrier boilers, etc., and Boiler spare parts
(Economizer, Finned tube, Header, Steam drum, Superheater, Water
wall panel, Air preheater, Cyclone separator, etc., which are
widely used in power generation, heat supply, chemical engineering,
textile, food, paper, road building, plastic, rubber and wood
working industries.
Quality Control
1. Strength calculation report with applied materials information.
2. 100%NDT(non-destructive inspection) report of steel plate, tube
and welding rod.
3. 100%X-ray inspection report (welding seam): to ensure the
quality of the entire boiler.
4. Hydraulic test report: ensure the standard working pressure and
safety.
5. ISO 9001 certificate,ISO 14001 certificate,ASME standard,TUV
& BV certified supplier.
6. Impact test,The scene to examine the water-wall,Industrial TV
monitoring,Snake-like pipe water pressure test,Header endoscopic
detection,Header weld inspection.
Certification
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Company
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