SA299GrA steel plate is one of the materials widely used in boiler drums (steam drums) of coal-fired generator sets. At present, the special thick steel plate for boiler steam drum has not been domestically produced, and the SA299GrA extra-thick steel plate is heavily dependent on imports, which greatly affects the cost control and delivery cycle of domestic boiler manufacturers.
At the end of last year, the company independently developed SA299GrA extra-thick steel plate for boiler steam drums with self-produced steel ingots, with a thickness of 178mm. According to the evaluation of professional authorities, the conventional and high-temperature mechanical properties, macro and micro structure and welding performance of the steel plate meet the needs of boiler drum products and can be applied to the manufacturing of boiler drum equipment, thus breaking the situation that the extra thick steel plate used for steam drum is heavily dependent on imports. Previously, the SA299GrA steel plate was approved to produce thicknesses ranging from 8mm to 150mm. After the successful trial production of the 178mm thick SA299GrA steel plate, we applied to the National Boiler and Pressure Vessel Standardization Technical Committee and successfully passed the assessment, successfully expanding the upper limit of the production thickness range of the SA299GrA steel plate to 200mm, which is the largest thickness in China.
- August 30, 201816MnR is a commonly used steel for boiler pressure vessels, hot rolled or normalized. It is a low alloy steel with a low content of Mn. The performance is similar to 20G (412-540), the tensile strengt...view
- August 30, 2018The steel pipe standard has played a role in technology guidance to a certain extent, guiding the capital flow direction and market orientation of the steel pipe manufacturing industry, and making its...view
- May 23, 2018Alloy constructional steels are generally divided into quenched and tempered constructional steels and surface hardened constructional steels.(1)Quenched and Tempered Constructional Steel - 4140 shee...view
- March 6, 2018Henan Steel Guang International Trade Co., LTD. is set up.Henan Steel Guang International Trade Co., LTD. is set up in 2016.Now our group have Henan Rongshenghui Trade Co., LTD.Henan Yi Rong Machinery...view