Steam and Water Circulation Mud drum and collector headers simple
steam drum Power Station
The word "header" is used in boiler technology for all collector
and distributor pipes, including the mud drum.The most important
design parameter for headers is diameter. It is defined by the flow
rate and the number of tubes connected to the header (here the
number of riser tubes).
Header construction is basically a miniature version of a simple
steam drum (diameters are smaller than the ones of steam drums).
However, in headers there are usually no internals except the
orifices in forced circulation and once-through principle boilers.
Small diameter headers are constructed from a tube with welded
front and end plates, whereas the big headers are made of bent
steel plates in the same way as steam drums.
1. Carbon steel:20G,SA-106B,SA-106C,etc.
2. Low-alloy thermal resistant
3. Middle-alloy thermal resistant steel:SA-335P91,etc.
4. Special material(ultra-supercritical):SA-335P122,SA-335P92,etc.
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
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.
Established in 1985,Zhangjiagang Hua Dong Boiler Co.,Ltd.(trading
as HD Boiler),produces power plant; industrial; waste heat; waste
incineration; biomass; organic heat carrier and electric steam
boilers. Coupled with a comprehensive range of heating surfaces, HD
Boiler brings to the market a unique service including boiler
design , fabrication, installation, maintenance and replacement of
boiler pressure parts.
1. Fabrication area of 200,000 square meters
2. 150 Engineers
3. 600 Coded welders
4. 60 Licensed Inspectors(NDT Level-III instructors)
5. Class-A Licenses for Design and Manufacture Boiler
6. ISO 9001:2008 Quality System
7. ASME Certificate of Power Boilers
8. ASME 'S','U' and NB stamp authorization
Our products have been wildly used in power plants and large
international companies overseas.
Such as USA, Brazil, Porto Rico, Guatemala, Spain, Demark, Norway,
Turkey, India, Korea, Australia, Middle East, Southeast Asia etc.