Zhangjiagang HuaDong Boiler Co., Ltd.
| Type | Natural Circulation |
| Structure | fire tube and water tube |
| Pressure | Low / High Pressure |
| Steam production | Max. 20t/h |
| Style | Horizontal |
| Fuel | Coal / Gas / Coal-fired / Water Heat |
| Output | Hot Water / Steam |
| Surface Treatment | Painted |
| Diameter (OD) | ∅76mm~∅914mm |
| Max Length | 23000mm |
| Temperature Range | 300~1500℃ |
| Material Options | 20G, SA-106B, SA-106C, 15CrMoG, 12Cr1MoVG, SA-335P12, SA335-P22, SA-335P91, SA-335P122, SA-335P92 |
| Header Types | water wall header, superheater header, economizer header |
| Construction Type | end cover type or necking down type |
| Operation Mode | Steam distribution with bypass and drain valves |
| Place of Origin | Zhangjiagang,China |
| Brand Name | HD Boiler |
| Certification | ISO9001,ASME,,EN,CE |
| Model Number | Manifold water wall header |
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Product Specification
| Type | Natural Circulation | Structure | fire tube and water tube |
| Pressure | Low / High Pressure | Steam production | Max. 20t/h |
| Style | Horizontal | Fuel | Coal / Gas / Coal-fired / Water Heat |
| Output | Hot Water / Steam | Surface Treatment | Painted |
| Diameter (OD) | ∅76mm~∅914mm | Max Length | 23000mm |
| Temperature Range | 300~1500℃ | Material Options | 20G, SA-106B, SA-106C, 15CrMoG, 12Cr1MoVG, SA-335P12, SA335-P22, SA-335P91, SA-335P122, SA-335P92 |
| Header Types | water wall header, superheater header, economizer header | Construction Type | end cover type or necking down type |
| Operation Mode | Steam distribution with bypass and drain valves | Place of Origin | Zhangjiagang,China |
| Brand Name | HD Boiler | Certification | ISO9001,ASME,,EN,CE |
| Model Number | Manifold water wall header | ||
| High Light | High Safety Level Boiler Manifold Header ，1 Year Warranty Steam Manifold Header ，5 Years Core Components Warranty Steam Header | ||
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Product Description
Steam distribution headers are fabricated out of carbon steel or alloy steel seamless tubes. Customised or tailor made items are offered. Headers, after fabrication, are stress relieved to make the Steam distribution headers free from stresses.They are big pipe headers that transfer water from the downcomers to the risers through a combustion zone where the water gets partially heated to steam from the heat of fuel combustion.
Operation
In bringing a boiler on the line with other boilers on a header system,certain precautionss are necessary to avoid water hammer and excessive temperature gradients in the piping.Adequate drainage and warming of the piping will eliminate the risk of water hammer.The judicious use of bypass valves around main header valves will avoid steep temperature gradients.Header drains should be operated.The steam line from the boiler to the header should be brought up to temperature by operationg bypass and drain valves.When up to temperature and line pressure,the header valve may be opened wide and the bypass closed.
Technical parameters
| Diameter(OD) | ∅76mm~∅914mm |
| Length(Max) | 23000mm |
| Temperature(℃) | 300~1500 |
Application
The steam boiler pressure part header with large diameter longitudinal welded pipe 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.
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.
The boiler headers have water wall header,superheater header,economizer header and so on. It acts action of gathering, mixing and redistribution in boiler systems. In structure, they include end cover hinders or necking hinders.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
1985
Total Annual:
100,000,000-120,000,000
Employee Number:
1000~1100
Ecer Certification：
Verified Supplier
Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. ... Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. ...
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