Steam collector connection Parts Boiler Headers Big pipes Water and
Steam transfer Medium
Headers form an important part of all types of boilers. Steam from
the generating tubes is collected in headers which are therefore
always under pressure. This 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. Depending 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.
The critical point to manufacture the end cover of steam trap
boiler economizer header is the welding process. We adopt the
advanced manufacture process, the complete large sized device and
mature technology, especially the welding of the end cover with the
boiler part header, we adopt the auto submerged welding, this
welding method exists the high manufacture efficiency, good
quality, the artistic welding appearance, safe and reliable
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.
ASME 'S' & 'U' STAMP
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.