• ISMT Limited

Multi-Rifled Tubes

ISMT Limited offers Multi-Rifled Seamless Cold Drawn Boiler Tubes for power generation and energy industry. Improved boiler efficiency: rifled tubes are used in heat exchangers and boilers to provide highly energy efficient means of heat transfer. The presence of the internal rifling induces centrifugal forces in the mass flow thereby separating the water from the steam fraction and forcing the water towards the tube wall. As a result of this phenomenon and the increase in internal surface the following advantages accrue: Improved heat transfer rate even at higher steam quality levels, very good heat transfer even at low mass flux levels, reduction in mean metal temperature of the tube wall, ability to increase heat transfer rate by optimising rifling geometry. Specifications and grades: rifle tubes can be supplied against ASTM, ASME, A/SA 192, 209, 210 and 213 specifications and all associated grades, tubes can be supplied against equivalent specifications like EN 10216, DN 17175, BS 3059, JIS 3461- 3462, tubes can be supplied to bath A and B type profiles. Detailed dimensions for each profile are given in the table. The company manufactures carbon/alloy steel and seamless tubes for: energy and power generation, automotive components, hydraulic and pneumatic pressure lines, hydraulic cylinders, gas cylinders, mining and construction, bearings, general engineering applications, and oil and petroleum applications.