ND Steel Advantages
ND steel is the most ideal material for "resistance to low-temperature dew point corrosion" both domestically and internationally. It is widely used in the manufacturing of devices such as economizers (energy savers), air preheaters, heat exchangers, and evaporators that operate in high-content flue gas environments, to combat dew point corrosion in flue gas. ND steel also exhibits resistance to chloride ion corrosion. The main assessment criteria for 09CrCuSb (ND steel) seamless steel pipes/plates (immersed in 70° 50% H2SO4 solution for 24 hours) is that the corrosion rate does not exceed 14mg/cm2·h, which is 1.84 times that of Japan's CR1R steel, 2.97 times that of 1Cr18Ni9 steel, 8.63 times that of Corten steel, and 14.11 times that of Q235B steel, compared to carbon steel, imported Japanese steel, and stainless steel. ND steel's superior resistance to dew point corrosion and its excellent cost-performance ratio make it a perfect substitute for stainless steel and the best material to surpass stainless steel in terms of dew point corrosion resistance. ND steel holds significant economic value and aligns with the current "green" concepts of high efficiency, long life, energy conservation, and environmental protection, as well as national development policy guidelines. Comparison of 09CrCuSb (ND steel) with other steel grades.
Steel Grade 09CrCuSb (ND Steel) CRIR (Japan) 1Cr18Ni9 Corten S-TEN (Japan) A3 (Q235B)
Corrosion Rate 7.30 13.40 21.70 63.00 27.4 103.50
Multiples 1 1.84 2.97 8.63 3.75 14.11
Note: Corten steel, also known as Weathering steel, is divided into two main categories: Corten A and Corten B. It represents the Cu-P series steel in the United States and is a low-alloy, high-strength structural steel that resists atmospheric corrosion, known as weather-resistant steel in China.
Performance Introduction
Design Reasonable: Horizontal internal combustion three-pass full-wet back design, 100% corrugated furnace tube. Excellent thermal expansion properties. Integrated water enveloping fire design, ample heating surface area and reasonable structural arrangement, ensuring high-efficiency operation of the boiler.
Manufacturing Standards: The company has established a comprehensive quality assurance system that operates reliably, ensuring the entire manufacturing process is strictly controlled and supervised by a special inspection agency on-site.
High-Efficiency Energy-Saving: The thermal efficiency of our steam and hot water boiler series ranges between 92% and 99.8%. The spacious combustion chamber, combined with a reasonable structural layout, transfers more heat into the water, significantly enhancing the heat exchange capability between fuel-steam and fuel-hot water.
Meets environmental protection standards: Large combustion space, maximizes radiant heat exchange, and features a high-quality, reliable imported burner, ensuring complete combustion of the fuel and significantly reducing the emission of harmful components in flue gas. Our fuel (gas) steam and hot water boilers have passed legal department testing and comply with national environmental protection requirements, making them ideal eco-friendly products.
High heating quality: Steam boilers feature ample steam storage capacity, ensuring the production of high-quality dry steam even under significant load fluctuations.
Superior Configuration: Equipped with world-renowned burners, an advanced control system (main components are imported), valves, and pumps all using top-quality national products. The excellent boiler accessories configuration provides a strong guarantee for the safe operation of the boiler.
Fully automatic operation: With just a push of the start button, the boiler operates according to the set program, with load regulation and water supply all handled automatically, requiring no constant supervision.
Long service life: The professional design of boiler products, advanced production technology, and superior boiler-grade steel ensure that the normal service life of the boiler body is over 15 years.
Maintenance and repair are convenient: The boiler is equipped with movable ash box doors at both front and back, with observation and inspection holes at the rear, allowing access to the furnace chamber for inspection and cleaning. Manholes are provided on the boiler body, with the structural design taking into account ease of maintenance and repair in the future.
Fully Automatic High-Efficiency Energy-Saving Gas Steam Boiler
One: Principle of boiler operation:
WNThe S series fuel (gas) steam boiler is a quick-installation internal combustion boiler, utilizing a high-performance automatic burner as the main combustion equipment. It produces high-temperature flames through an automatic ignition function, which then exit the boiler through the upper flue and are released into the atmosphere through the chimney. This model features high heat exchange efficiency, simple structure, and a long service life.
II. Features of the Boiler Body:
Manufactured with high-quality boiler steel plate, compliant with the national JB/T10393 standard.
2. Utilizes a pipeline flow-through structure for high heat exchange efficiency and extended service life.
3. Boilers' weld seams 100% X-ray inspected and accompanied by a certificate of compliance.
4. Utilizes high-quality, efficient thermal insulation materials with minimal heat loss.
Section 3: Features of Boiler Electric Control System:
Pressure Limit Automatic Control Device
2. Automatic safety valve discharge unit
3. High/low water level, trigger an alarm and immediately stop heating.
4. Overcurrent shutdown and alarm
Principle of Gas-Fired Boiler Operation:
Water in the pot (pot shell) is continuously heated by the energy released from the combustion of gas fuel in the furnace, causing the temperature to rise and producing pressurized steam. As the boiling point of water increases with pressure, the pot is sealed, and the expansion of steam inside is restricted, creating pressure to form thermal power (strictly speaking, the steam in the boiler is formed by water being heated to saturation in the pot shell at a constant pressure and then vaporizing). As an energy source, it is widely used.
High-quality and affordable gas boilers - Shandong Hezhou Gas Boilers - Where to find the best quality gas boilers - Best gas boilers in Xinjiang
