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Positive Tolerance Premium Bare Tube Water Wall Panels For Waste Heat Recovery

Zhangjiagang HuaDong Boiler Co., Ltd.
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Positive Tolerance Premium Bare Tube Water Wall Panels For Waste Heat Recovery

Brand Name : HD BOILER
Model Number : Water wall panel
Certification : ISO9001 , SGS , TUV , ASME , EN
Place of Origin : Zhangjiagang,China
MOQ : 5 tons
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : 800 Tons / Month
Packaging Details : Iron Frame Package
Painting : White
Tube material : SA 179
Fin bar : SA36
Design & Fabrication : ASME SECTION I,2017 EDITION
NDE REQUIREMENTS : 100% RT/ 100%PT / 100%UT
Anti-corrosion : Painting & Powder
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Bare tube water wall panel export product positive tolerance premium quality with low cost


1Tube panels are fabricated using premium grade raw materials in carbon steel or alloy steel as per the customers' requirement.
2Layers of tube panels involving multi radius bends, overlapping each other to be accommodated in lesser space for ultimate efficiency.
3Compact size and leak proof assembly.
4Widely used in water tube and waste heat recovery boilers, tube panels can be customized as per the specifications and drawings of customers.
5Smelting units, power stations and sugar plants are the common buyers of this product.


1An innovative, engineering solution for solving corrosion or erosion/corrosion problems experienced by the waterwall is to apply an overlay of a corrosionresistant alloy to carbon steel waterwalls on site using automatic welding machines.
2The GMA W overlay machine, which is fully automatic, deposits weld beads in a vertical down mode starting typically from the membrane and then moving to the tube section following a preprograrnrned weld bead sequence to achieve a uniform coverage of the waterwall (i.e., membranes and tubes) in a boiler.
3Each weld bead is overlapped by subsequent weld bead to insure a full coverage with no missing spots.
4The thickness of the overlay applied to the watelwall in field is typically 1.78 mm (0.070") minimum.
5For overlay welding of the waterwall in the field, it is a common practice to use many welding machines, for example, 10 or more, at the same time in the boiler to complete the project during a maintenance shutdown.
6A modem machine can deliver a welding "speed" of approximately 0.14 to 0.19 m2 (1.5 to 2.0 fY) per hour.
7Thus, with 10 machines, a total area of about 16.7 to 22.3 m 2 (180 to 240 fY) of the waterwall can be overlaid over a 12-hour shift. A waterwall area of about 280 m 2 (about 3000 fY) can be routinely overlaid in seven days using a two 12-hour-shift-per-day schedule.
8When the waterwall is damaged beyond repair on site, the damaged section can be removed and replaced with shop-fabricated overlay panels.
9Panels of sizes up to 1.2 m (4 ft) wide and 12 m (40 ft) long can be readily handled in the shop.
10Construction of an overlay panel consists of fabricating a panel of steel tubes and membranes, which is then followed by overlay welding of the panel on a stand using essentially the same techniques as field overlay.


1Energy saving enviromental protection china supplier membrane water wall for CFB boiler are membrane walls that are made of tubes welded together with or without a strip of metal in between.
2These walls form the enclosure of the coal combustion chamber.
3Water wall tubes are also referred to as the evaporator section; they contain water mostly in liquid form which gradually evaporates as it rises in the boiler.


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