Profile: Bluestar International is a manufacturer and exporter of instrumentation fittings & flanges. We are an ISO 9001:2000 and ISO 14001:2004 certified company. We offer flanges in varied stature metals like steel, aluminum, and nickel, in varied types, and in numerous sizes. We serve industries such as marine & oil field, chemical & petrochemical, offshore, iron, nuclear power, paper, sugar, and cement industries. BSI syphon tubes are used to protect instruments from higher temperature & direct contact of live medium with instruments. These are manufactured in carbon steel, stainless steel, and alloy steel, with butt weld or threaded ports.