Studded Bed Tubes /Coils are available in the diameter up to 18mm. These Bed Tubes /Coils can be availed in carbon steel, alloy steel and stainless steel pipes construction. These Bed Tubes /Coils are used in fired heaters under very high pressure and temperature mainly in petroleum refineries. These Studded Bed Tubes /Coils are made of pipes up to 8 inch diameter.