पीपीआर पाइप विशिष्टता को समझना

मैं. Introduction of PPR water pipe

पीपीआर (यादृच्छिक कॉपोलीमराइज़्ड पॉलीप्रोपाइलीन) पाइप is a new type of environmentally friendly plastic pipe, इसके उच्च तापमान प्रतिरोध के साथ, संक्षारण प्रतिरोध, लंबा जीवन (इससे अधिक 50 साल) and other characteristics, widely used in construction of hot and cold water systems, HVAC engineering and industrial fluid transportation field. इसके मुख्य लाभों में शामिल हैं:

Safety and environmental protection: Non-toxic and odorless, in line with drinking water health standards (जीबी/टी 17219).

Strong temperature resistance: Long-term use temperature of 70°C, short-term temperature resistance up to 95°C.

Pressure and corrosion resistance: No electrochemical corrosion problems, suitable for acid and alkali environments.

सुविधाजनक स्थापना: Hot melt connection technology to achieve seamless sealing, to eliminate the risk of leakage.

2, the specifications of PPR water pipe parameters

1. Outside diameter and wall thickness

PPR pipe specifications to the nominal outside diameter (डीएन), common sizes include:

dn20 (4-minute pipe), dn25 (6-minute pipe), dn32 (1-inch pipe), dn40, dn50, dn63 and so on.

The wall thickness (en) is calculated based on the SDR value and directly affects the pressure capacity (see SDR details below).

2. दाब मूल्यांकन (PN value)

PPR pipes are divided into four classes according to nominal pressure:

3. एसडीआर (मानक आयाम अनुपात)

एसडीआर (मानक आयाम अनुपात) is the core design parameter of PPR pipe, defined as the ratio of pipe outer diameter (डीएन) to wall thickness (en):

SDR = outer diameter (डीएन) / दीवार की मोटाई (en)

SDR value is smaller → thicker wall → the stronger the pressure-bearing capacity, suitable for high-pressure systems.

The larger the SDR value → the thinner the pipe wall → better economy, suitable for low-pressure scenarios.

Common SDR values and corresponding pressure ratings

3. How to select according to SDR?

1. Selection according to system pressure demand

High-pressure scenario (उदाहरण के लिए:. HVAC boiler room): choose SDR6 or SDR7.4 with large wall thickness and strong creep resistance.

Conventional residential hot and cold water: एसडीआर9 (पीएन16) can meet more than 90% of the demand.

Low-cost cold water project: एसडीआर11 (पीएन10) has the best economy.

2. Matching by temperature adaptability

High temperature system (≥70°C): low SDR value (उदाहरण के लिए:. SDR7.4) must be selected to avoid deformation due to thermal expansion.

Low temperature chilled water system: High SDR value (उदाहरण के लिए:. एसडीआर11) can be selected to reduce cost.

3. Reference to industry standards

National standard GB/T 18742: clear PPR pipe SDR series and size tolerance requirements.

आईएसओ 15874: international general standard, applicable to export-oriented projects.

4, PPR water pipe installation precautions

Thermal fusion temperature control: 260 ± 5 ° C for the optimal fusion temperature, to avoid too high leading to carbonization of the material.

Socket depth: need to match the specifications of the pipe fittings (such as dn20 pipe insertion depth of 14mm).

Pressure test: 1.5 times the working pressure holding pressure test (≥ 30 minutes) स्थापना के बाद.

PPR water pipe through the scientific design of the SDR parameter system, to achieve a balance between performance and cost. When selecting the type, you need to integrate the three elements of system pressure, temperature and budget, and prioritize the selection of high-quality raw materials in line with the national standard (such as Scandinavian Chemical RA130E) products. As a professional manufacturer, we offer a full range of SDR-specification PPR pipes and customized solutions to help customers build safe and durable piping systems.

देने वाला

लुओयांग डेटांग एनर्जी टेक कंपनी, लिमिटेड. पाइप और फिटिंग का एक पेशेवर निर्माता और आपूर्तिकर्ता है. हम पीपीआर पाइप प्रदान करते हैं, पीवीसी पाइप, पीई पाइप, और सभी प्रकार के पाइपों के लिए फर्श हीटिंग पाइप और फिटिंग, उच्च गुणवत्ता और प्रतिस्पर्धी कीमतों के साथ. यदि आपके पास पाइप और फिटिंग के बारे में कोई पूछताछ है, कृपया हमसे संपर्क करने में संकोच नहीं करें. आप हमसे संपर्क करने के लिए उत्पाद पर क्लिक कर सकते हैं.