Zhangjiagang HuaDong Boiler Co., Ltd.
Zhangjiagang HuaDong Boiler Co., Ltd.
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A335 P9 / SA 335 P22 ASTM Standard Power Plant Economizer 6 Inches Diameter Sprial Welding
Introduction
• Boiler economizers are heat exchange devices with finned tubes that heat a liquid, sometimes water, up to however sometimes doesn't exceed the boiling purpose of liquid.
• We can manufacture three types of boiler economizer, bare tube economizer, H finned tube economizer and spiral finned tube economizer.
• H-finned tube economizer is high efficient heat exchanger economizer which is consisted of H-finned tubes.
• Compared with bare tube economizer, H-finned tube economizer can enlarge the heat exchange area and reduce the number of tubes.
• It also can increase the flue gas flow area in order to reduce the flue gas flow speed and abrasion.
H-finned tube can be made as double H finned tubes , with high rigidness to fit long tube row.
• The spiral finned economizer is a newly designed heat transfer equipment, consists of spiral fin tubes to overcome the serious abrasion and short service time.
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
• Impact test and Strength calculation report with applied materials information.
• 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.
• X-ray, γ-ray and liquid penetrant test inspection report (welding seam): to ensure the quality of the entire boiler.
• Hydraulic test report: ensure the standard working pressure and safety.
Company profile
| • | Fabrication area of 400,000 square meters |
| • | 150 Engineers |
| • | 600 Coded welders |
| • | 60 Licensed Inspectors(NDT Level-III instructors) |
| • | Class-A Licenses for Design and Manufacture Boiler |
| • | ISO 9001:2008 Quality System |
| • | ASME Certificate of Power Boilers |
| • | ASME 'S','U' and NB stamp authorization |
Products in the workshop
