Stainless Simbi Coil 201 yeKemikari uye kicheni (J1, J2)

● The successful application of 200 series stainless steel in India is due to the possibility of replacing 304 stainless steel in some specific applications.

● Most of the 200 series stainless steel sold in the Chinese market has little control of sulfur and carbon content in accordance with national standards, replacing some or all of nickel with manganese (and nitrogen) to produce austenitic stainless steel with lower nickel content.

● The disadvantage of this series of materials is that the chromium content below 18% and the low nickel content cannot reach a balance and form ferrite. For this reason, the chromium content in the 200 series stainless steel is reduced to 13.5% to 15%. Some The situation has dropped to 13% to 14%, and its corrosion resistance cannot be compared with 304 and other similar steels. In addition, manganese and in some cases copper reduce the effect of repassivation under acidic conditions common to corrosion sites in deposition zones and crevices. 200 series steel will fail at these conditions approximately 10-100 times faster than 304 stainless steel. Residual sulfur and carbon content in these steels are often not controlled in production, and the material cannot be traced back to its origin, even when the material is recycled. If Cr-Mn steels are not specified, they can be a dangerous mix of scrap, resulting in castings with unexpectedly high levels of manganese.

● China mainly has the following 200 series steel grades: J1, J3, J4, 201, 202. Later, steel grades such as 200 with lower nickel content control appeared. As for 201C, it is the extended steel grade of 201 developed by individual steel mills in China in the later period. The national standard grade of 201 is: the old grade 1Cr17Mn6Ni5N, the new grade: 12Cr17Mn6Ni5N On the basis of 201, 201C continues to reduce the content of nickel and increase the content of manganese.

● Petroleum tsvina yekupisa gasi pombi;
● Injini inopera pombi;
● Boiler shell, kupisa kupisa, kupisa zvikamu zvevira;
● Muffler zvikamu zveinjini dzedhiziri;
● Boiler pressure yemudziyo;
● Makemikari ekutakura motokari;
● Majoini ekuwedzera;
● Spiral welded pombi dzechoto pombi uye dryer;