LUOYANG CAME ENERGY TECH CO., LTD
מדוע יותר אנשים בוחרים ב-PP-RCT
בכמה סביבות קיצוניות יותר, אילו אביזרי צנרת יכולים 'לשרוד'?יש רק תשובה אחת:PP-RCT
PP-RCT is a high-performance upgraded material in the field of polypropylene piping, full name Polypropylene Random Copolymer with enhanced Crystallinity Temperature, commonly referred to as high-temperature-resistant polypropylene pipe or fourth-generation PP-R pipe. It is not a completely new material, but a high-performance polypropylene pipe developed on the basis of traditional PP-R through molecular structure optimization, crystallization morphology control, and nanomodification technologies.
The core differences between PP-RCT and traditional PP-R
| Performance Indicators | Traditional PP-R | PP-RCT |
|---|---|---|
| Long-term service temperature | ≤70℃ | ≤90~95℃ |
| Short-term tolerance temperature | ≤95℃ | ≤110℃ |
| Minimum required strength (MRS) | 8.0 MPa | 10.0 MPa |
| High-temperature pressure-bearing capacity | Benchmark | Increase by 30%~50% |
| Low temperature impact resistance | General (brittle below 0℃) | Significantly improved (still flexible at -20°C) |
| Wall thickness under the same pressure | Relatively thick | Can be thinned by 15%~20% |
| Creep/Stress Cracking Resistance | בֵּינוֹנִי | מְעוּלֶה |
Manufacturing of PP-RCT
- Special Resin Synthesis and Modification
- Random copolymerization of propylene with 1.5%~4% ethylene, precisely controlling the molecular weight distribution; the core involves a blend of high-efficiency α-crystalline nucleating agents and a composite anti-oxidation system. Through twin-screw blending and granulation, special particles with high crystallinity and high melt strength are formed.
- Precision Extrusion Molding
- Single-screw extrusion is used with strict temperature control (≤230°C to prevent degradation); the key to success lies in ‘gradient slow cooling’ גודל (60°C → 40°C → 25°C staged spraying), allowing the nucleating agents to fully act and uniformly refine spherulites, avoiding internal stress and microcracks caused by rapid cooling; laser online diameter and thickness measurement is conducted throughout.
- Mandatory Quality Inspection and Certification
- Must pass a 1000-hour static hydrostatic test at 95°C/10.0MPa and extrapolate life to 70°C/50 years according to ISO 9080; simultaneously test thermal stability (OIT ≥ 20 min) and drinking water hygiene safety; after passing, the pipe body is mandatorily marked with PP-RCT, pressure rating, and the applicable standard.
The advantages of pp-rct in extreme environments
- Extremely cold but not brittle: fine crystalline structure, homogeneous heat fusion, high system integrity under freeze-thaw cycles;
- High temperature but not soft: MRS 10.0 MPa, anti-oxidation system, long-term stability at 90°C operating conditions;
- Earthquake-resistant and corrosion-resistant: flexible one-piece molding, chemically inert, suitable for geologically active areas and high-chlorine water quality regions.
Application of pp-rct
- Building hot and cold water supply systems (especially for high-rise buildings, hot water return, and whole-house water supply for villas)
- Connection of underfloor heating main/branch pipes, exposed pipelines for radiators
- Solar heat collection systems, air source heat pump refrigerant water systems
- Places with high requirements for water quality and temperature, such as hospitals, hotels, swimming pools, and food factories
- Industrial low-pressure fluid transport (non-strongly corrosive media, temperature ≤ 95°C)
פרופיל חברה
Luoyang Datang Energy Tech Co., בע"מ. היא יצרנית סינית מובילה המתמחה בצינורות ואביזרים מפלסטיק באיכות גבוהה. מצויד בקווי ייצור אוטומטיים חדישים ונתמכים על ידי צוות של 200 אנשי מקצוע, אנו מציעים קו מוצרים נרחב הכולל מעל 150 סוגי צינורות ואביזרים מפלסטיק המיועדים למערכות אספקת מים וניקוז, העברת גז, ומערכות חימום רצפות. המוצרים העיקריים שלנו כוללים צינורות ואביזרי PVC, פ (HDPE) צינורות ואביזרים, PPR צינורות ואביזרים, ו-PEX צינורות חימום רצפות.
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