Zhangjiagang HuaDong Boiler Co., Ltd.
| Payment Terms | L/C at sight, T/T |
| Supply Ability | 300 sets per month |
| Delivery Time | Within 80 days after getting the down payment or L/C |
| Packaging Details | Seaworthy Packing for exporting with iron frame |
| Application | Power Plant Boiler, Heat Exchanger |
| Material | stainless steel,Boiler steel,Steel tube |
| Fuels | Coal Fired, Oil Fired, Gas Fired |
| Surface treatment | Painted |
| Structure | Horizontal |
| Painting | Customized |
| Brand Name | HD Boiler |
| Model Number | HDB Economizer |
| Certification | ASME, TUV, EN3834, ISO9001, Grade A |
| Place of Origin | JIANGSU,CHINA |
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Product Specification
| Payment Terms | L/C at sight, T/T | Supply Ability | 300 sets per month |
| Delivery Time | Within 80 days after getting the down payment or L/C | Packaging Details | Seaworthy Packing for exporting with iron frame |
| Application | Power Plant Boiler, Heat Exchanger | Material | stainless steel,Boiler steel,Steel tube |
| Fuels | Coal Fired, Oil Fired, Gas Fired | Surface treatment | Painted |
| Structure | Horizontal | Painting | Customized |
| Brand Name | HD Boiler | Model Number | HDB Economizer |
| Certification | ASME, TUV, EN3834, ISO9001, Grade A | Place of Origin | JIANGSU,CHINA |
| High Light | CFB economizer tubes for boilers ，corrosion resistant boiler economizer ，thermal power plant water boiler | ||
High Corrosion Resistant CFB Economizer Tubes Thermal Power Plant Electrical Water Boiler
Economizer Types
If according to heating extension of the working fluid, economizers can be divided into non-boiling and boiling types.
1. Boiling economizers: the outlet water temperature not only can reach the surnatured temperature, but also can make some water vapourized, the proportion is about 10-15% of total feed water, not more than 20% in case of much flow resistance caused to the working fluid.
2. Non-boiling economizers: the outlet temperature is 20-25 degrees lower than the boiling point under pressure given.
Functions
1. fuel saving: the economizers are placed at the rear part of boilers. This way can decrease the smoke and gas temperatures, thus to save fuels.
2.improve the working conditions of steam drums: due to economizers, the feed water temperature is increased when entering the steam drum. It reduces the temperature difference between the feed water and steam drum wall as well as steam drum thermal stress, so that it improve the working conditions of steam drums and increase the service life.
3.reduce the boiler manufacturing cost: for the feed water is heated in the boiler economizers. The use of low temperature spare parts as boiler economizers to replace some of high-priced high temperature water wall panels reduces the cost to manufacture boilers.
There are three stages from the feed water in the boiler heated into superheated steam:feed water preheating, evaporation, and superheating. The three stages are finished on three different heating surfaces. The boiler steam and water circuit are composed of the three different heating surfaces as well as their connecting pipes. Boiler economizers are one of them, and it is right the equipment to preheat the feed water. Thus, it is the heating surface with the lowest temperature for boiler working fluid in the boiler steam and water circuit. The working fluid passing through this equipment is monophasic water(non-boiling economizer).
Specifications
| Description | Boiler economizer |
| Material | Alloy steel, Carbon steel, SA210C ,SA213T22, etc. |
| Material standard | ASTM, EN or ISO etc. |
| Dimension | Customization |
| Weight | Min: 10 ton Max.:1000 ton |
| Smelting Process: | EF+LF + VD |
| Process | Material→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection |
| UT standard | ASTM A388 or EN10228, 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
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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