What Is The Difference Between En39 S235gt And Q235
EN39 S235GT and Q235 are both steel grades used for construction purposes.
EN39 S235GT is a European standard steel grade that refers to the chemical composition and mechanical properties of the steel. It contains Max. 0.2% carbon, 1.40% manganese, 0.040% phosphorus, 0.045% sulfur, and less than 0.020% Al. The ultimate tensile strength of EN39 S235GT is 340-520 MPa.
Q235, on the other hand, is a Chinese standard steel grade. It is equivalent to EN standard S235JR steel grade which is commonly used in Europe. Q235 steel has a carbon content of 0.14%-0.22%, a manganese content of less than 1.4%, a phosphorus content of 0.035%, a sulfur content of 0.04%, and a silicon content of 0.12%. The ultimate tensile strength of Q235 is 370-500 MPa.
In summary, EN39 S235GT and Q235 have similar chemical compositions but slightly different mechanical properties. The choice between the two depends on the specific application and requirements of the project.
original source: https://www.chinayoufa.com/news/what-is-the-difference-between-en39-s235gt-and-q235
What Is Black Annealed Steel Pipe
Black annealed steel pipe is a type of steel pipe that has been annealed (heat-treated) to remove its internal stresses, making it stronger and more ductile. The process of annealing involves heating the steel pipe to a certain temperature and then slowly cooling it down, which helps to minimize the formation of cracks or other defects in the steel. The black annealed finish on the steel pipe is achieved by applying a black oxide coating to the surface of the steel, which helps to resist corrosion and increases the durability of the pipe. This type of steel pipe is commonly used in applications such as building construction and furniture manufacturing.
Youfa was founded on July 1st, 2000. There are totally about 9000 employees, 13 factories, 293 steel pipe production lines, 3 national accredited laboratory, and 1 Tianjin government accredited business technology center.
In 2012, our production volume for all kinds of steel pipes was 6.65 million tons. In 2018, until now our production volume has been 16 million tons, and the sales amount has reached 160Million US Dollars. For 16 consecutive years, we are titled among TOP 500 Enterprises in China Manufacturing Industry.
Exportation Department has 80 employees. Last year we exported 250 thousand tons all kinds of steel products. Mainly exported to East Asia, South Asia, Southeast Asia, The Middle East, Africa, Middle & South America, West Europe, Oceania, nearly 100 countries. Our products are qualified with API 5L, ASTM A53/A500/A795, BS1387/BS1139, EN39/EN10255/EN10219, JIS G3444/G3466, and ISO65, owning a good reputation at home and aboard.
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Company Name: Tianjin Youfa Steel Pipe Group
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