... equipments. We had already obtained ISO9001, CE and the license to import and export years ago, with these honors, we are ... qualified and permitted to produce pressure pipeline unit for oil, chemical industry, and electricity ... , XS, SCH80, SCH160, XXS 3, Dimension: 1/2" to 48" 4, Material: carbon steel A234 WPB WPC A105 A106, alloy steel, stainless ...