Cosa significa PE pipe sdr?

2025-08-19

Nella selezione e nell'applicazione dei tubi in PE, incontriamo spesso il termine "SDR". Per i non professionisti, SDR può sembrare un po 'sconosciuto. Quindi, cosa significa esattamente l'SDR dei tubi in PE? Qual è il suo significato? Questo articolo lo spiegherà in dettaglio per te e lo spiegherà in combinazione con i prodotti per tubi in PE dei tubi AD.

SDR, il nome completo è Standard Dimension Ratio, che viene tradotto in cinese come "standard size ratio". È un importante parametro tecnico dei tubi in PE. Si riferisce specificamente al rapporto tra il diametro esterno nominale (dn) e lo spessore nominale della parete (en) del tubo. È espresso dalla formula: SDR = dn / en.

Da questa definizione, possiamo vedere che SDR riflette effettivamente una relazione proporzionale tra il diametro esterno e lo spessore della parete dei tubi in PE. Quindi, qual è il significato pratico di questo rapporto? In generale, maggiore è il valore SDR, più sottile è lo spessore nominale della parete della conduttura sotto lo stesso diametro esterno nominale. L'assottigliamento dello spessore della parete influisce direttamente sulla capacità portante della conduttura. Pertanto, maggiore è il valore SDR del tubo PE, minore è la pressione interna che può sopportare; al contrario, minore è il valore SDR, maggiore è lo spessore della parete della conduttura, maggiore è la sua capacità di sopportare la pressione.

Nelle applicazioni pratiche, produttori professionali come AD Pipe produrranno una serie di prodotti per tubi PE che coprono una varietà di diverse specifiche SDR, come i comuni SDR11, SDR17,6, SDR21, SDR26, ecc. Questi diversi gradi SDR corrispondono a diversi gradi di pressione. I progettisti di ingegneria sceglieranno tubi in PE con specifiche SDR adeguate in base a vari fattori come il mezzo di trasporto specifico, la pressione di esercizio, l'ambiente di posa e il costo del progetto.

Ad esempio, se si tratta di un tubo principale per il trasporto di acqua di rubinetto ad alta pressione, vengono solitamente selezionati tubi in PE con un valore SDR inferiore, uno spessore della parete più spesso e una maggiore capacità portante in pressione; per alcuni scenari di drenaggio, fognature o irrigazione di terreni agricoli che non richiedono alta pressione, è possibile selezionare tubi in PE con un valore SDR maggiore e relativamente più economico. Durante il processo di produzione dei tubi AD, verranno rigorosamente seguite le norme pertinenti per garantire che il valore SDR di ciascun prodotto di tubi in PE soddisfi i requisiti di progettazione, in modo da garantire il funzionamento sicuro e affidabile del prodotto in varie condizioni di lavoro.

Comprendere il significato di SDR del tubo PE ci aiuterà a scegliere e utilizzare il tubo PE in modo più scientifico e ragionevole per garantire la qualità ingegneristica e l'effetto di utilizzo. Se hai dubbi sulla scelta di SDR quando selezioni il tubo PE, si consiglia di consultare tecnici professionisti o società di produzione regolari come AD Pipe per ottenere la soluzione più adatta alle esigenze del tuo progetto.


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