Standard:JIS, AISI, ASTM, GB, DIN, EN Place of Origin :Guangdong, China (Mainland) Brand Name :King Wall Model Number: TP201 Type :Welded Steel Grade: 200 Series Application :Decoration Certification :ISO Thickness :0.18mm~3.0mm Outer Diameter :6.35-219.08mm Welding Method :TIG Polish: 180grit/240grit/320grit/400grit/600grit. According to customers' demands.