... 6~24mm, , length:3000~18000mmmaterial:Q235can produce grade:A/B/C/Dplace of origin: China(mainland)Brand name: boshengstandard: AISI, ASTM ... . .2. Weathering steel Add a special elements (P, Cu, C, etc.) with a good corrosion resistance and atmospheric corrosion resistance, used for ... used to produce high pressure gas pressure vessel,which filles with LPG, acetylene and other gas A36/A3/Q235 Hot rolled ...