... , DIN 2616, DIN 2617, DIN 28011 stainless steel sch 10 pipe fittings HIGH-PRESSURE, MEDIUM-PRESSURE,LOW-PRESSURE, CARBON STEEL, ALLOY ... WP11, A234 WP12, A234 WP22, WP91, A420, SPHY42, WPHY52, WPHY 60, WHY65, WPHY70, WP304, WP304L, WP304H, WP316, WP316L, WP321, WP347, WP347HDIN ... are 105 staffs including 5 senior engineers.] stainless steel sch80 pipe fittings