304 as the square pipe for conveying fluid, such as oil, gas, water, gas, steam, in addition, the bending and torsional strength of the same, the weight is light, so it is widely used in the manufacture of machinery parts and engineering structures.And 304 of the decoration is very strong, widely used in building decoration, housing decoration and public property chang. Finish: Polished, Grade: 304 Standards: AISI ASTM Delivery time: 1-2 Days