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Por que máis xente escolle PP-RCT

Nalgúns ambientes máis extremos, que accesorios de tubo poden "sobrevivir"?Só hai unha resposta: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

On the left is the monoclinic crystal (α crystal) of PP-R, and on the right is the hexagonal crystal (β crystal) of PP-RCT.
Performance IndicatorsTraditional PP-RPP-RCT
Long-term service temperature≤70℃≤90~95℃
Short-term tolerance temperature≤95℃≤110℃
Minimum required strength (SEÑORA)8.0 MPa10.0 MPa
High-temperature pressure-bearing capacityBenchmarkIncrease by 30%~50%
Low temperature impact resistanceXeral (brittle below 0℃)Significantly improved (still flexible at -20°C)
Wall thickness under the same pressureRelatively thickCan be thinned by 15%~20%
Creep/Stress Cracking ResistanceMediumExcelente

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’ dimensionamento (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.
PP-RCT three-layer co-extrusion production lineInner layer (PP-R) → Middle layer (PP-R fiberglass reinforced layer) → Outer layer (PP-R)

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: SEÑORA 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.
High-temperature dry street

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)
Tubos aleatorios de polietileno
PP-RCT Pipes

Perfil da empresa

Luoyang Datang Energy Tech Co., Ltd. é un fabricante chinés líder especializado en tubos e accesorios de plástico de alta calidade. Equipado con liñas de produción automatizadas de última xeración e apoiado por un equipo de 200 profesionais, ofrecemos unha ampla liña de produtos que comprende máis 150 tipos de tubos e accesorios de plástico deseñados para sistemas de abastecemento e drenaxe de auga, transmisión de gas, e sistemas de calefacción por chan radiante. Os nosos principais produtos inclúen tubos e accesorios de PVC, PE (HDPE) Tubos e accesorios, Tubos e accesorios PPR, e tubos de calefacción por chan PEX.

Se ten algunha dúbida sobre a instalación de tubos de HDPE, por favor, non dubide en contactar connosco!

Tel.:0086-183 3790 0677

Wechat: 0086-183 3790 0677

Whatsapp: 0086-183 3790 0677

Correo electrónico: sales@pipesandfittings.net

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