ASTM 304 stainless steel pipe 1. standard : GB ASTM AISI 2. grade : SUS 304TP 304LTP 316 3. supply special specificatio Stainless steel pipe Usage: widely used in petroleum, chemical, pipelines, and a variety of stainless steel, acid-proof steel parts production, to ensure the steel’s chemical composition and physical performance Material: 400 series: 401,409,430ect; 300 series: 304,316ect; 200 ...