Boiler Industry

Types and Advantages of Steel Boiler PlateWhat are the advantages of using steel boilerplates?1. High Tensile Strength2. Extreme Temperature Resistance3. Versatile and Flexible Steel has become the standard material used in construction and manufacturing, being an important element in building projects and manufacturing different kinds of products. Due to its qualities like durability, longevity, versatility, and high-temperature resistance, steel is a material that can be used for a wide variety of applications.Along with being a very popular type of building material, steel is also used to create vessels and facilities designed to withstand high temperatures and contain both hot and corrosive substances. This type of temperature-resistant steel is called a steel boilerplate, and has a long history of being used in various industries. What is a Steel Boiler Plate?A steel boilerplate is a type of rolled steel that has a moderate thickness, which is around 3mm. While most types of rolled steel have similar features and qualities, steel boilerplates are manufactured to comply with a specific industry standard. A steel boilerplate is designed to not only have the qualities of industrial steel but also have increased temperature resistance.Steel boilerplates are used in industries that operate under high-temperatures and have corrosive or very hot substances in storage. Steel boilerplates can be used to create storage and industrial vessels like recompression chambers, fuel tanks, boilers, and pressure cylinders. Along with having the ability to withstand high temperatures, steel boilerplates are also designed to withstand high pressure to have maximum durability. What are the advantages of using Steel Boiler Plates?Using steel boiler plates has become commonplace across different types of industries, as they provide a wide range of qualities that other types of metals cannot provide. This makes them very advantageous to use in different applications, allowing other industries to make use of their qualities. Here are some of the other advantages that steel boilerplates have to offer. High tensile strengthSteel is always known as a material with high tensile strength, and boilerplates offer this advantage as well. Along with having the ability to withstand strong temperatures, boilerplates can withstand heavy impact and weight, making them very durable and long-lasting. This makes them ideal in very busy areas where operations like manufacturing, mining, extracting, and containment are present.This durability also makes steel boiler plates last longer compared to other metals. While other types of metals have difficulty operating in more extreme conditions, steel boilerplates are able to withstand these conditions, while still retaining the same level of durability. Maintaining and cleaning steel boilerplates is easier as well, as steel is an easy surface to clean and polish. This allows you to add an extra layer of protective coating that can prolong the life of steel. Extreme temperature resistanceAlong with having superior durability, steel boilerplates are also known for their resistance to extreme levels of temperatures. Steel boilerplates are regularly used in places where different kinds of gases and corrosive substances are present. This makes using other industrial material very difficult, as these substances are hard to contain, and the high temperatures will only damage the material. Using steel boilerplates will help contain and store these materials, preventing any leakage and hazards from happening.Along with being resistant to high temperatures, steel boilerplates are also resistant to lower temperatures, making them useful when operating in colder conditions. If you are looking for a material that has the ability to withstand different levels of temperature while retaining the same level of strength, steel boilerplates are the best option. Versatile and FlexibleSteel is one of the most versatile materials used in different industries across the world, allowing it to be used in different capacities and forms. This same versatility is also present in steel boilerplates as well, allowing them to be shaped and welded into different forms without compromising strength and performance. It helps steel boiler plates become more usable in different forms and functions.Steel boilerplates are designed to be formed into different shapes to accommodate different kinds of substances and elements, which is why it is made to be easier to weld and formed into different items. This makes steel boiler plates very easy to use when manufacturing products, providing you with temperature resistant tools and devices in a short period of time. Key TakeawaySteel is known for its ability to retain its strength in extreme conditions, and steel boilerplates are no exception. The ability to withstand very high temperatures while also being versatile and easy to manufacture makes steel boiler plates a quality steel option. 

How Different ASTM A53 and A500?ASTM A500 is available in cross-sections matching each of the cross-sections for ASTM A53steel pipe, there are many more cross-sections available in A500. ASTM A53 StandardsASTM A53 pipe, a standard specification for black and hot-dipped, zinc-coated, welded and seamless  steel pipe, is used for mechanical and pressure applications as well as ordinary uses in steam, water, gas and air lines. ASTM A53 can be formed and welded. Pipe sizes are properly designated using the Nominal Pipe Size (NPS).  This is the nominal pipe diameter with a scheduled wall thickness (i.e., 4 inch Schedule 40 pipe). the ASTM A53 Specification requires testing (i.e., pressure testing) that is not needed for structural applications. This additional testing can add unnecessary additional cost. A53 pipe are only available in standard pipe sizes.  Round HSS come in a variety of sizes and wall thicknesses.  ASTM A500 StandardsASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes. ASTM A500 is the most common specification in North America for Hollow Structural Sections.  Round HSS sections are properly designated by indicating the outside diameter in decimal inches by the nominal wall thickness to three decimal places (i.e., 5.563 x 0.250).  ASTM A500 applications include structural supports, building columns, highway signs, oil field services and communication towers, to name a few. All steel structures have their pros and cons, but ultimately ASTM A500 is the better choice when you need a round profile. The tolerances of A500 are tighter than those of A53, therefore the A500 round HSS have a higher degree of quality and less variability.A500 round HSS have greater strength-to-weight ratios than A53 pipes.

4 Key Properties of Boiler Quality PlateBoiler quality plate is a subfamily of steel alloys designated for the manufacture of pressure vessels and pipelines. There is an extensive range of specifications and grades suitable for use in both on- and offshore facilities. Natural gas extraction. Petroleum refining. Chemical containment. Cryogenic transportation. The petrochemical and gas production sectors utilise boiler quality plate for an extensive range of applications, each of which demands the highest quality alloys with several key properties.In this blog post, Masteel explores four of the key properties of boiler quality plate in more detail.WeldabilityPressure vessels and boilers are generally fabricated by welding multiple curved steel plates together to form a cylindrical or spherical component. This geometry enables the component to withstand the strain exerted from pressurised fluids and liquidised gases at cryogenic temperatures. Weldability is subsequently one of the most important properties of boiler quality plate.Weldability of alloys is determined qualitatively to assess the appropriate joining methods for a given steel grade. Fusion welding is the preferred method of joining boiler quality plate, but it is important to holistically determine suitable welding methods against the elemental composition of individual steels to mitigate the risk of failure modes in the design.Low-Temperature ToughnessThe tensile toughness of boiler quality plate is vital for determining the material’s resistance to mechanical strain, but it is also indicative of both brittleness and ductility. Pressure vessels are routinely and continuously subjected to extreme temperatures that can dramatically alter the tensile toughness of steels used in their manufacture.Assessing the low-temperature toughness of boiler quality plate via Charpy designations enables engineers to predict the strain-resistant qualities of the material under operating conditions.Creep ResistanceCreep deformation, or cold flow, refers to a material’s slow mechanical distortion in response to long-term exposure to high degrees of mechanical stress. It is a vital property in pressure vessel applications as steel grades are subjected to significant thermodynamic stresses throughout their lengths of service.Boiler quality plate is designed for exceptional toughness properties in response to ambient and applied pressures. They are tested for the highest levels of notch toughness to guarantee materials are neither too hard nor brittle, providing long-lasting strength and ductility under demanding conditions.Corrosion ResistanceThe corrosion-resistant requirements of boiler quality plate largely depend on its eventual area of application. Performance is dictated by the chemical composition of the steel grade, which can be finely tailored to elicit distinct resistances to cryogenic gases, hydrocarbons, acidic fluids, and more.For example; Masteel has invested heavily in Hydrogen Induced Cracking (HIC) resistant boiler quality plate to resolve common issues in the sour service industry. Cold cracking is one of the primary failure modes of pressure vessel steel grades and boiler quality plate. It occurs when martensite is formed during heat treatment, or joining, and when hydrogen (H2) is present in the steel microstructure. Eliminating this issue from critical components can provide appreciable cost benefits and throughput improvements for petrochemical facilities.

Large diameter seamless tube structure and its chemical activity analysis The corrosion caused by the electrochemical action of large diameter seamless pipe in contact with the surrounding electrolyte is called electrochemical corrosion. The so-called electrochemical action is the role of generating electric current in the process of chemical reaction. This kind of corrosion due to electric current is electrochemical corrosion. It is more common than chemical corrosion. Generally speaking, the principle of electrochemical corrosion of large diameter seamless pipe is the same as that of primary cell of large diameter seamless pipe. Therefore, to understand electrochemical corrosion, you must first learn the theory of primary battery and related knowledge. First, the structure and chemical activity of large-diameter seamless tubeFrom the modern atomic structure theory, due to the large diameter of the seamless tube, the number of outermost electrons in an atom is small (1,2,3e e e), and with the increase of the atomic radius, the outermost electrons are easily lost. When electrons leave a large diameter seamless tube atom, the large diameter seamless tube atom becomes a large diameter seamless tube cation, and when electrons leave a large diameter seamless tube cation, it now becomes a neutral large diameter seamless tube atom.The structure of large-diameter seamless tubes was studied with x-rays, and the results proved that all large-diameter seamless tubes have a crystalline structure, with large-diameter seamless tubes and large-diameter seamless tubes cation atoms lining the large-diameter seamless tube lattice points. Between the atomic electrons of the ions present between the original to and away, these electrons are not fixed on the dotted nodes near the large-diameter seamless tube, but move freely throughout the interworking of the character, and are therefore called free electrons. Due to the free movement of electrons large-diameter seamless tubes are created, and with the help of large-diameter steel tube bonds, atoms and cations are tightly connected together in large-diameter seamless tubes, forming large-diameter seamless tubes crystals. Due to the above structural characteristics, especially the presence and movement of free electrons, large diameter seamless steel tubes have some common properties. Such as conduction, heat transfer, ductility, etc. In terms of chemical properties, large-diameter seamless tube atoms easily lose valence electrons and turn into cations. Therefore, large diameter seamless tube is a water-reducing agent. The easier large seamless tubes lose electrons, the more chemically active they are. For example, if we put a small piece of zinc into any lead salt solution, we can see that the zinc starts to dissolve and the lead dissolves from the solution. For example: Zri + Pb (N03) 2 = Pb + Zinc (N03) 2Write it as an ionic equation:Zn+ Pb++ = Pb+ Zn++ Clearly, this is a typical redox reaction. The essence of the reaction is that the zinc atom gives its outermost electron to the Pb++ ion, and the Pb++ ion becomes the Zn++ ion into solution. On the other hand, the Pb++ + ions combine with the electrons to form large seamless lead tubes that precipitate out of the solution. If you do the opposite experiment and you put a small piece of lead into the zinc salt solution, nothing happens. This means that zinc loses electrons more readily than lead, and zinc ions are less likely to bind electrons than lead. So zinc is more active than lead. If the same method is used to compare the activity of lead and copper, it is found that lead is more active than copper and brass, where lead replaces the salt solution of steel, while copper is not displaced by the salt solution of lead. It can be seen that among the above three types of large-diameter seamless tubes - zinc, lead and copper - zinc is the most active and loses the most electrons, lead is the second and copper the least. According to the above experiments, it can be seen that the size of the mutual substitution ability of large-diameter seamless tubes in solution is, and the size of the activity of large-diameter seamless tubes can be determined. Large-diameter seamless tube activation order tableK, Na, Ca, Mg, Ba, Al, Mn, zn, Cr, Fe, Ni, Sn, Pb, H, Cu, Hg, Ag, Pt, Au The ability of large diameter seamless tube to lose electrons in solution (the activity and reduction ability of large diameter seamless tube) is weakenedFrom this number list, we can summarize the chemical properties of large-diameter seamless tubes as follows:1. large diameter seamless tubes (containing hydrogen) in the large diameter seamless tubes activation sequence list from their salt solutions can replace the large diameter seamless tubes that follow them2. large-diameter thick-walled tubes in front of hydrogen can replace hydrogen in dilute acids, while large-diameter seamless tubes behind hydrogen cannot3. The more active the large-diameter seamless tube in front of it in the ordinal list, the greater the possibility of its atoms losing electrons and the greater the difficulty of ion binding

Differences between Steel Tube and Steel Pipe While appearing to be interchangeable, steel tube and steel pipe have different industrial purposes and applications. Understanding the differences between the two can ensure you select the right steel product for your application needs. Tube and pipe are manufactured in both carbon steel and stainless steel. The significant differences when considering which one is right for your application or project are important:l Tube is calculated by outside (OD) diameter and wall thickness, pipe is calculated by their nominal pipe size (NPS) and schedule (wall thickness).l Pipe is round and is used to distribute fluids and gases.l Tube is round, square or rectangular.l Steel tube is often used for smaller diameters where tight tolerances are needed, while steel pipe is well suited for large applications.l Due to the manufacturing process, steel pipe is more cost-effective than steel tube since they require less processing and inspection. Steel Tube CharacteristicsAvailable in seamless or welded options, steel tube is well-suited for structural applications. As a versatile metal profile, steel tube provides the strength and durability needed for a wide range of industrial and commercial uses. Material options include mild carbon steel tubing as well as stainless steel tubing. Often manufactured in square, round, or rectangular (flat) hollow profiles, steel tubing offers you the following benefits:Can be telescopedCost-efficientHigh tensile strength Applications for Steel TubingCommon industrial applications for steel tubing include:ConstructionAutomotive applicationsHVAC applicationsMedical device components Steel Pipe CharacteristicsSimilar to steel tubing, steel piping is widely used for manufacturing and industrial purposes. Also available in seamless or welded options, steel pipe is readily available in carbon steel or alloy steel material options. To assist with corrosion resistance, steel pipe can also be galvanized with a protective coating. Carbon steel pipe is easily workable, making it suitable for general purpose applications. Stainless steel pipe is often used for gas or liquid transport or where its sanitary, hygienic properties are needed. Applications for Steel PipeIndustrial and manufacturing uses for steel pipe include:Chemical applicationsOil and gas applicationsHeat exchangersPlumbing applicationsAutomotive hydraulics Which is Stronger, Steel Tubing or Steel Piping?Generally speaking, steel tubing is stronger than steel piping. Steel tubing offers you the tensile strength and ruggedness needed for high-strength applications and projects. Find Steel Tube or Steel Pipe for Your Next ProjectWith an expansive selection of steel tube and steel pipe, Fushun Metal has the in-stock inventory you need. Contact us for more information.

1. When the newly installed boiler is put into operation. ,2. When a boiler that has been out of service for more than one year resumes operation. ...3. After major repairs or replacements of boiler transformation and pressure-bearing components, if the number of replacement pipes for the water wall exceeds 50%, the superheater, reheater, economizer and other components are replaced in groups, and the steam drum undergoes major repairs. ...4. When the boiler is seriously overpressured 1.25 times the working pressure and above. ...5. When the heating surface of the boiler is deformed in a large area after severe water shortage. ...6. When there are doubts about the safety and reliability of equipment operation according to the operating conditions.

1. After the boiler is installed, the pressure-bearing parts must undergo a hydraulic test. ...2. After the boiler has been overhauled or repaired or the local heating surface has been overhauled, a conventional hydraulic test must be carried out, and the test pressure is equal to the maximum allowable working pressure of the boiler. The water pressure test should be presided over by the maintenance personnel, and the operation and maintenance personnel shall participate together. ,3. Boiler hydraulic test is generally performed twice for major and minor repairs. According to the specific technical conditions of the equipment and approved by the boiler supervision department of the group company, the interval can be appropriately extended or shortened. The overpressure test should be combined with major and minor repairs.

Boiler hydraulic test is a test of strength and tightness with pressurized water after the boiler is assembled.

P91, can be used as subcritical, supercritical boiler wall temperature ≤ 625 °C high temperature superheater, reheater steel pipe, and wall temperature ≤ 600 °C high temperature header and steam pipe, can also be used as nuclear power heat exchangers and oil cracking furnace tubes.Standard: ASTM A213 ASTM A335Tensile strength: ≥585 (MPa)Yield strength: ≥415 (MPa)Extension rate: ≥20(%) P91 steel is a new type of martensitic heat-resistant steel that was developed in cooperation with the National Institute of Geosciences and the Metallurgical Materials Laboratory of American Combustion Engineering. It is based on the 9Cr1MoV steel to reduce the carbon content, strictly limit the sulfur, phosphorus content, add a small amount of vanadium, niobium element alloying. According to ASTM 213/A213M-85C, the chemical composition of P91 steel is shown in Table 1.The German steel number corresponding to P91 steel is X10CrMoVNNb91, the Japanese steel number is HCM95, and France is TUZ10CDVNb0901