A seamless steel pipe for fluid (fluid pipe) is a steel pipe with a hollow section and no welds from the beginning to the end. It is mainly used for conveying fluid pipelines in engineering and large-scale equipment.
Fluid seamless pipe production process:
Round tube billet→heating→piercing→three-roll skew rolling, continuous rolling or extrusion→tube removal→sizing (o reduciendo)→cooling→billet tube→straightening→hydraulic test (o detección de fallas)→marcado→almacenamiento .
Due to its low cost and high strength, fluid seamless pipes are widely used in fluid transportation in modern society. The fluid seamless pipe can also carry out anti-corrosion and thermal insulation treatment on the surface according to the needs of use conditions and actual construction conditions.
The length of the fluid seamless pipe can be made according to the needs of customers, the general length is between 6 y 12 metros, and the export steel pipe is within 6 metros. The fluid seamless pipe at the outlet also needs to be grooved, painted and capped.
The difference between structural seamless steel pipe and fluid seamless steel pipe:
Tubería de acero sin costura estructural, this standard is applicable to seamless steel pipe for general structure and mechanical structure, and fluid seamless steel pipe standard is applicable to general seamless steel pipe for conveying fluid. La principal diferencia entre este y el tubo estructural de acero sin costura es que el tubo fluido de acero sin costura se somete a pruebas hidráulicas una por una o ultrasónicas., inspección de fugas de corrientes de Foucault y flujo magnético. Por lo tanto, en la selección estándar de tuberías de acero para tuberías a presión, fluid seamless steel pipes should be used.
Método de fabricación:
① Generally, the temperature of boiler tubes is below 450 ° C, and domestic tubes are mainly made of No. 10 and No. 20 carbon steel hot-rolled tubes or cold-drawn tubes.
② High-pressure boiler tubes are often used in high temperature and high pressure conditions, y los tubos se oxidarán y corroerán bajo la acción de gases de combustión y vapor de agua a alta temperatura. Se requiere que la tubería de acero tenga una alta resistencia duradera, alta resistencia a la corrosión por oxidación, y buena estabilidad organizativa.
Solicitud:
①General boiler tubes are mainly used to manufacture water wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke tubes and arch brick tubes, etc.
②High-pressure boiler tubes are mainly used to manufacture superheater tubes, tubos de recalentamiento, tubos guia de gases, tubos principales de vapor, etc. of high-pressure and ultra-high-pressure boilers.