Zhangjiagang HuaDong Boiler Co., Ltd.
Zhangjiagang HuaDong Boiler Co., Ltd.
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Best impact force resistant and work reliability boiler economizer spiral fin tubes
Specification:
Best impact force resistant and work reliability boiler economizer spiral fin tube is the most widely used of the spiral finned tube, widely used in electric power, metallurgy, cement industry preheating collection and petrochemical industries. Boiler economizer spiral fin tube is welded steel strip coil pipe at the same time, using high-frequency currents of the skin effect and proximity effect of steel tube, and surface heat until melted in the plastic state or steel strip coil, the complete welding under certain pressure. This kind of high frequency welding as a solidphase welding. It with Mosaic, brazing (or whole galvanized) method, whether in product quality (fin of weld rate is high, of 95%), or the productivity and automation degree, are more advanced.
Introduction:
1. Add the heat exchange area and reduce the number of tubes, also increase the fume flow section area to reduce the fume speed and abrasion.
2. H type fin economizer arranged in line to make the space into many small zones, averaged air flow to reduce the abrasion.
3. With straight channel to gain the best ash-blowing effect.
4. The compact structure to reduce the weight and reduce the manufacturing cost.
Technical Parameter
| Description | Heat boiler economizer, steam boiler economizer, oil boiler economizer, coal steam boiler economizer, Gas boiler economizer,etc |
| 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. 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 safety
Company Introduction
Established in 1985, Zhangjiagang Hua Dong Boiler Co., Ltd. (trading as HD Boiler), is a
professional industrial manufacturer, producing utility boiler,industrial boiler,HRSG boiler and all
kinds of boiler parts, such as waterwall panels, economizers, air preheaters, superheaters,
headers, spiral fin tubes, H-fin tubes, heat pipes etc.
We are the qualified supplier for the following large boiler manufacturers in China: