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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.
Process
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 operation.
Technical parameters of customer design boiler pressure parts header for CFB boiler
| Diameter(OD) | ¢76mm~¢914mm |
| Length(Max) | 23000mm |
| Temperature(ºC) | 300~1500 |
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.
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 (welding seam): to ensure the quality of the entire boiler.
4. Hydraulic test report: ensure the standard working pressure and safety.
Packaging & Shipping
·For special cargos, such as overlength, overwidth, overheight and overweight cargos, we will choose frame boxes for easy handling.
·For regular goods, we prefer ordinary containers.
·After loading the goods, we will reinforce them in all aspects.
Zhangjiagang Hua Dong Boiler Co., Ltd.,
founded in 1985, is an enterprise specializing in manufacturing power station boilers, industrial boilers, HRSGs, waste incineration boilers, biomass boilers and related heating surface components in China. Hua Dong Boiler provides clients with integrated services from design, manufacturing to installation and maintenance.
Complete quality assurance and control system which certified according to the International Quality Standard.
Establish a quality assurance system faithfully in compliance with the national regulations, standards and other technical requirements. The quality of process and products is 100% under control. Ensured all the products are manufactured faithfully in accordance with the contract requirements, national regulations and standards by stringent inspection and test over materials and products during manufacturing.
Global Sales
FAQ
Q1: How long is the warranty period?
Q2: How can we guarantee quality?
1) All machines are in strict accordance with the ISO quality and CE system requirements.
2) Each procedure is crafted by professional Skilled labour, followed by particular QC
3) All information of our products can be checked in efficient management system.
Q3: What can you buy from us?
CFB Boiler, HRSG Boiler, Boiler Economizer, Boiler Fin tube, Boiler Air preheater, Boiler superheater, Boiler membrane wall,
Boiler manifold headers and other pressure spare parts.
Q4: What kind of service do you provide?
Before sales:
Provide productinformations, market research forecasting, product customization,product processing,consultation and other services for your convenience.
After sales:
1. Technical training on according to customer requirements;
2. We promise replacement under warranty;
3. We promise to supply the maintenance spare parts;
4. Regular call back or visit customers;
5. On time response to mail and phone calls of your complaints or consultation.
Accepted Delivery Terms: FOB, CFR, CIF, EXW, FCA;
Accepted Payment Currency: USD, CNY;
Accepted Payment Type: T/T, L/C, MoneyGram, Western Union, Cash;
Language Spoken:English,Chinese
We are a factory, just 130km(2 hours by car) away from Shanghai Airport.
