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what are the material composition of a water tube boiler

Product Thermal Capacity: 1 - 20 t/h

Working Pressure: 0.7 - 2 Mpa

Available Fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.

Available Industries: Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.

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Introduction of WNS gas / oil fired steam boiler:

WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.

Technical advantages:

1. Digitized manufacture
The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.

2.Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.

3. Longer working life
Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.
Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.

4. Less fuel consumption
High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.
Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.
Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.

Water Tube Boiler – Working Principle, Types of Water Tu

Water Tube Boiler Components of Water Tube Boiler. The water tube boiler can be built with boiler shell, burner, mud drum or mud ring, furnace, safety valve, strainer, sight glass, feed check valve, steam stop valve, etc. Boiler Shell: This shell is the external cylindrical part of a pressure container.

Description of Boiler Tube Grades - Chicago Tube & Ir

BOILER TUBE GRADES CARBON STEEL SA178 Carbon steels show mild corrosion resistance and fair strength up to 1000F. However, their usage above 800F must take into account the susceptibility to graphitization. Graphitization has not been a significant problem in thicknesses encountered in boiler tubing. Use of heavy section pipe above 800F, however, is not recommended. […]

Boiler tubes and pipes - steel seamless tubes | Železiar

Boiler tubes for higher temperatures, diameters from 10.2 to 139.7 mm, wall thickness from 0.5 to 16 mm, length 5 – 22 m.

Materials used in boiler & furnace - LinkedIn SlideSha

Apr 10, 2018· Material Used for ConstructionMaterial Used for Construction • Boiler water wall tubes contains (averageBoiler water wall tubes contains (average values) 0.22% of Carbon, 0.21% ofvalues) 0.22% of Carbon, 0.21% of Silicon, 0.47% of Manganese, 0.02% ofSilicon, 0.47% of Manganese, 0.02% of Sulphur & 0.015% of PhosphorousSulphur & 0.015% of

Composition of Boiler Tub

File Size: 489KB For any boiler retubing job, it is absolutely essential to use tubes that conform in every way to the tube requirements of the particular boiler. Boiler tubes are NOT identical. They differ in such important characteristics as composition of the metal, outside diameter, wall thickness, length, and curvature.

Why Boiler Designers Use Different Materials

Superheaters in boilers have all modes of heat transfer in boiler. They also have a very high length through which the total pick up steam temperature takes places at each unit length. The length of tube and temperature pick-up needed to raise the steam to the required level of super heating calls for using different materials along the total length. These changes in material will have to be

Failure analysis of the boiler water-wall tube - ScienceDire

Why is the Cochran boiler shell made with a sphericalSep 30, 2018What material is used for covering the surface of a boilerMay 14, 2018Which material is used for a superheater in a boiler?Mar 03, 2018What is the material in water tubes and fire tubes madeJul 21, 2017See more results The boiler water-wall tube was found bursting on the fire-face side. Through examination it is found that the composition of the matrix material of the tube meets the requirements of the relevant standards. The microstructure of the tube is composed of ferrite and pearlite.

(PDF) Selection and Analysis of Material for Boiler Pip

Cited by: 7 Selection and Analysis of Material for Boiler Pipes in a Steam Plant.pdf chemical composition and mechanical properties of this The PV Pump is used to deliver water from the sea to the

Water-tube boiler - Wikiped

A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes.In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes

Boiler tubing comparison SA-210C and ASTM A106 Grade

Oct 25, 2017· SA-210C is ASME boiler materials, a seamless carbon steel pipe widely used for for water cooling wall, economizer of boiler parts. Its chemical composition is simple, except a higher carbon and manganese content, and the rest composition are similar to 20G, so the yield strength is about 20% higher than 20G while the plasticity and toughness

Coal Bottom Ash/Boiler Slag - Material Description - Us

Bottom ash and boiler slag are composed principally of silica, alumina, and iron, with smaller percentages of calcium, magnesium, sulfates, and other compounds. The composition of the bottom ash or boiler slag particles is controlled primarily by the source of the coal and not by the type of furnace.

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