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Stainless Steel Pipe&Tube Classification Main Products Application Areas Representative Grades Boiler Tubes Used for boilers, high-pressure steam pipes, power station superheaters and reheaters. 740H, 617B S31042, S30432 TP347H-FG, TP347H Furnace Tubes Used in hydrogen reduction chemical industry or high-temperature equipment; applications include anti-high temperature corrosion resistance (such as nitriding corrosion in ammonia synthesis) and carburizing comprehensive [...]

Stainless Steel Pipe&Tube Manufacturing Standards Our company follows GB, ASME, API, JIS, EN steel pipe standards and user requirements, and produces various steel pipe products. Seamless Stainless Pipe&Tube Standards Standard Number Name in English GB/T 14975 Seamless Stainless Steel Tubes for Structural Purposes GB/T 14976 Seamless Stainless Steel Tubes for Fluid Transportation GB 13296 Seamless Stainless Steel [...]

Introduction In the industrial landscape of boiler equipment manufacturing, selecting the appropriate materials is crucial for ensuring safety, efficiency, and longevity. The ST35.8 steel pipe, compliant with the DIN 17175 standard, has emerged as a preferred choice among manufacturers. This boiler tube is renowned for its excellent mechanical properties, high-temperature resistance, and durability, making it ideal [...]

Introduction: SUS304TB stainless steel tubes represent a specialized grade of austenitic stainless steel specifically engineered for high-temperature applications in boiler systems. These tubes have gained significant prominence in industrial boiler manufacturing due to their exceptional heat resistance, superior corrosion resistance, and remarkable mechanical properties. As global industrial standards continue to evolve, understanding the capabilities and applications [...]

Heat Transfer and Flow Resistance of Finned Tube Bundles   In the first and second lectures, the concept of convective heat transfer coefficient hh on the outer surface of finned tubes was introduced, particularly emphasizing the need for finned tubes due to low heat transfer coefficients on the air or flue gas side. This lecture will [...]

Finned Tube Bundles The previous sections covered the principles of heat transfer and structural features of individual finned tubes. This section focuses on finned tube bundles, a topic closer to practical applications of finned tubes. We will use many photos of finned tube heat exchangers to enhance understanding and prepare for future discussions on designing these [...]

Fin Ratio, Fin Efficiency, and Selection of Fin Parameters In the previous section, we discussed the principles of heat transfer and selection criteria for finned tubes. In this section, we will cover two important concepts related to finned tubes: the fin ratio and fin efficiency, along with considerations for selecting fin parameters. However, first, we propose [...]

Principles of Heat Transfer and Selection Criteria for Finned Tubes Finned tubes, also known as fin tubes or ribbed tubes, are referred to in English as "Fin Tubes" or "Finned Tubes," sometimes called "Extended Surface Tubes." As the name implies, finned tubes are created by adding fins to the surface of a tube (either the exterior [...]

What is a Finned Tube?                                                   A finned tube (Finned Tube), as the name suggests, is a heat transfer tube with fins or projections on its surface. Also known as a fin tube [...]

Factors Influencing the Determination of Pipeline Pressure Ratings Apart from the basic parameters of design temperature and design pressure used to determine the pressure rating of a pipeline, there are several other factors that will affect the determination of the pipeline's pressure rating. 1.2.1 Application Standard System Different standard systems have varying nominal pressure series and [...]