202 cold rolled stainless steel welded tubeCurrently market in the " does not rust iron " products can has 65% of share is its price up with important of role , are GB stainless steel products each tons of price about 20,000 yuan around , GB 7,075 aluminum alloy each tons price about for 16,000 yuan around , and " does not rust iron " of price each tons only for 5000-7000 Yuan ; turn then see this three species material of tensile strength respectively for : GB stainless steel 530-620MPa , GB 7,075 aluminum alloy 540-560MPa , " does not rust iron " 160-180MPa . Clearly " stainless iron " also does not meet the tensile strength of one-third strength of stainless steel, is very easily lead to accidents.