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Categories | Boiler Manifold Headers |
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Brand Name: | Dehai Boiler |
Model Number: | Boiler Header |
Certification: | ISO9001 , SGS , ABS , ASME |
Place of Origin: | China |
MOQ: | 5 Tons |
Price: | Negotiable |
Payment Terms: | L/C, T/T |
Supply Ability: | 500 Tons / Month |
Delivery Time: | 50 Days |
Packaging Details: | Seaworthy packing |
Condition: | New |
Pressure: | High Pressure |
Material: | Carbon Steel / Alloy Steel |
Style: | Horizontal |
Structure: | Water Tube |
Membrane Water Wall Collecting Header Brief Introduction
1. Carbon steel:20G,SA-106B,SA-106C,etc.
2. Low-alloy thermal resistant
steel:15CrMoG,12Cr1MoVG,SA-335P12,SA335-P22,etc.
3. Middle-alloy thermal resistant steel:SA-335P91,etc.
4. Special material(ultra-supercritical):SA-335P122,SA-335P92,etc.
Boiler Headers Manifolds Quality Control
1. Impact test and Strength calculation report with applied materials information.
2. 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.
3. X-ray, γ-ray and liquid penetrant test inspection report to ensure the quality of the entire boiler.
4. Hydraulic test report: ensure the standard working pressure and safety.
Materials
1. Carbon steel:20G,SA-106B,SA-106C,etc.
2. Low-alloy thermal resistant
steel:15CrMoG,12Cr1MoVG,SA-335P12,SA335-P22,etc.
3. Middle-alloy thermal resistant steel:SA-335P91,etc.
4. Special material(ultra-supercritical):SA-335P122,SA-335P92,etc.
Features
1.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.
2. 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 headers
3. Bevelling and weld preparation of stubs duly tack-welded to the
main body of the header are first shown to Chief Inspector of
Boilers for his approval and once again the stubs fully welded with
main body are shown to Chief Inspector of Boilers under hydraulic
pressure, varying from 1000 to 3000 psi as required by the
specifications.
4. The headers are stamped by Chief Inspector of Boilers before
they leave our manufacturing plant. We also weld skubolets and
weldolets in place of stubs.
Specification
Product Name | Membrane Water Wall Header for boiler |
Applied Area | boiler membrane water wall |
Body Material | - Carbon Steel : 20#, 20G, A192, A-1 - Alloy Steel : 15CrMoG, 12Cr1MoVG, T11, T22 |
Nozzle Tube Material | As per design |
Standard | China GB, ASME |
Manufacturer Grade | China A Grade, ABS Certificated, TUV Certificated |
Working Temperature | depends on material |
Working Pressure | 1.6 MPa ~ 15 MPa |
Body Thickness | As per design |
Body Diameter | As per design |
Body Length | As per design |
Welding | SMAW, SAW, GTAW (TIG) |
Welding NDT | - Body : 100% RT or 100% UT - Nozzle tube > Φ108 : > 20% MT, 100% UT - Nozzle tube <= Φ108 : > 20% MT |
After Painting
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