Generally, materials with a hardness of 304 or higher are preferred, while materials with a hardness of 200 or 201 have higher difficulty in forming.
304 stainless steel is a universal stainless steel material with stronger rust resistance than 200 series stainless steel materials. The aspect is also quite good, it can reach up to 1000-1200 degrees. 304 stainless steel has excellent rust resistance and good resistance to intergranular corrosion. It also has good ability to handle alkaline solutions and most acids and inorganic acids.
Stainless steel bent pipes have the following advantages:
1. Tensile strength. The tensile strength of a typical steel bent pipe is about 300Mpa, while that of a copper bent pipe is about 200Mpa. The tensile strength of a stainless steel bent pipe is twice that of a steel bent pipe and three times that of a copper bent pipe.
2. Good corrosion resistance. The main cause of pipeline leakage is chloride ions, and in practice, 304 stainless steel can withstand 200ppm chloride and 316 stainless steel can withstand 1000ppm chloride water, which is particularly important for large buildings.
3. Environmental protection. Stainless steel bent pipes, free from scale accumulation, capable of secondary pollution of pipelines; Resistant to various acid-base and salt solutions; Compared with other pipes, the amount of heavy metals (Ni, Cr, Mo) leached into water is less, and the amount of metals (Na, Fe, Ca) leached into pure water is less; The product can be 100% recycled.
Application of stainless steel bent pipes:
Stainless steel bent pipes only appeared in the domestic market in the late 1990s. With the continuous prosperity and development of China's social economy and the improvement of people's quality of life, it has become a rising star in the field of pipe materials, widely used in the pipelines of building water supply and direct drinking water.