Here is kaysuns. kaysuns is a steel pipe, buttweld pipe fittings, and duplex 2205 pipe manufacturer and supplier in China. The product we deal with include stainless steel pipe & tubes, pipe fittings, flanges, valves, fasteners, gaskets etc, also customized products and designs to customer needs and specific requirements. ASME/ANSI,ASTM,EN/DIN,GB,JIS,ISO,BS etc, our materials always fabricated and delivered from the international standards.