¿Qué significa sdr de tubería de PE?

2025-08-19

En la selección y aplicación de tuberías de PE, a menudo nos encontramos con el término "SDR". Para los no profesionales, SDR puede parecer un poco desconocido. Entonces, ¿qué significa exactamente el SDR de tuberías de PE? ¿Cuál es su significado? Este artículo lo explicará en detalle para usted y lo explicará en combinación con los productos de tubería de PE de tuberías AD.

SDR, el nombre completo es Standard Dimension Ratio, que se traduce al chino como "relación de tamaño estándar". Es un parámetro técnico importante de las tuberías de PE. Se refiere específicamente a la relación entre el diámetro exterior nominal (dn) y el espesor de pared nominal (en) de la tubería. Se expresa por la fórmula: SDR = dn / en.

A partir de esta definición, podemos ver que SDR realmente refleja una relación proporcional entre el diámetro exterior y el espesor de pared de las tuberías de PE. Entonces, ¿cuál es la importancia práctica de esta relación? En términos generales, cuanto mayor es el valor de SDR, más delgado es el espesor de pared nominal de la tubería bajo el mismo diámetro exterior nominal. El adelgazamiento del espesor de la pared afecta directamente la capacidad de carga de presión de la tubería. Por lo tanto, cuanto mayor es el valor de SDR de la tubería de PE, menor es la presión interna que puede soportar; por el contrario, cuanto menor es el valor de SDR, más grueso es el grosor de la pared de la tubería, más fuerte es su capacidad de carga de presión.

En aplicaciones prácticas, fabricantes profesionales como AD Pipe producirán una serie de productos de tubería de PE que cubren una variedad de diferentes especificaciones de SDR, como las comunes SDR11, SDR17,6, SDR21, SDR26, etc. Estos diferentes grados de SDR corresponden a diferentes grados de presión. Los diseñadores de ingeniería elegirán tuberías de PE con especificaciones SDR adecuadas de acuerdo con varios factores, como el medio de transporte específico, la presión de trabajo, el entorno de colocación y el costo del proyecto.

Por ejemplo, si es una tubería principal para transportar agua del grifo con alta presión, generalmente se seleccionan tuberías de PE con valor SDR más pequeño, espesor de pared más grueso y mayor capacidad de carga de presión; para algunos escenarios de riego de drenaje, aguas residuales o tierras de cultivo que no requieren alta presión, se pueden seleccionar tuberías de PE con de mayor valor SDR y relativamente más económico. Durante el proceso de producción de tuberías AD, se seguirán estrictamente las normas pertinentes para garantizar que el valor SDR de cada producto de tubería de PE cumpla con los requisitos de diseño, a fin de garantizar el funcionamiento seguro y confiable del producto en diversas condiciones de trabajo.

Comprender el significado de SDR de tubería de PE nos ayudará a elegir y usar tubería de PE de manera más científica y razonable para garantizar la calidad de la ingeniería y el efecto de uso. Si tiene dudas sobre la elección de SDR al seleccionar tubería de PE, se recomienda consultar a técnicos profesionales o empresas de producción regulares como AD Pipe para obtener la solución más adecuada para las necesidades de su proyecto.


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