PVC Electrical Conduit Piping System

PVC Electrical Conduit Piping System
Execution Standards： Core National Standard: GB/T 43815-2024 Industry Standard: JG/T 3050-1998
Material: The primary raw material is Unplasticized Polyvinyl Chloride (PVC-U), supplemented with functional additives such as flame retardants and impact modifiers.
Diameter Range: The common range for Nominal Outer Diameter (dn) is 16mm to 50mm.
Applications Primarily used for the protection of electrical wires and cables within civil and industrial buildings. Can be installed as concealed conduits within walls or floor slabs, or as surface-mounted conduits for general wiring.
Features: Insulation & Flame Retardancy, Corrosion & Pest Resistance, Easy Installation, Mechanical Protection
Customization Supported.
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Description

1.Product Introduction

Our PVC (Polyvinyl Chloride) Electrical Conduit System is a high-performance product primarily made from Unplasticized Polyvinyl Chloride (PVC-U), specifically designed for the safe protection of electrical wiring in modern buildings. It is strictly manufactured and tested in full compliance with the latest national standard, GB/T 43815-2024 Insulated Electrical Conduits and Fittings Made of Unplasticized Polyvinyl Chloride (PVC-U) for Use in Buildings, ensuring end-to-end compliance and reliability from production to distribution.

This system provides a complete solution encompassing not only the conduit itself but also a full suite of fittings such as elbows, couplings, and junction boxes. Formulated with eco-friendly materials free from heavy metals like lead, mercury, and chromium, our product is designed to offer comprehensive protection—insulation, flame retardancy, moisture resistance, and mechanical damage prevention—for both power and low-voltage cables in residential, commercial, and industrial buildings. It meets the demands for circuit safety and signal integrity in various modern applications, including smart home systems, security surveillance, and home theaters.

Product Specifications

2.Technical Parameters

Product Classification

Light-duty (Type L/205), Medium-duty (Type M/305), Heavy-duty (Type H/405)

Nominal Outer Diameter Range

Φ16mm to Φ63mm

Execution Standards

GB/T 43815-2024, JG/T 3050-1998

Electrical Performance

xcellent insulating properties, capable of withstanding voltage tests of 2000V and above without breakdown, ensuring electrical safety

Flame Retardancy

High oxygen index, exhibiting flame-retardant characteristics; self-extinguishes instantly upon removal from flame, effectively preventing fire spread along wiring routes

Mechanical Performance

High compressive and impact resistance. Heavy-duty conduits can be embedded in concrete without risk of damage from pressure or impact. Some premium products allow cold bending at temperatures as low as -15°C without cracking

Physical Performance

Low product density, good toughness, and high resin content ensure excellent comprehensive mechanical properties

Environmental Performance

Complies with environmental protection requirements and can meet the standards for green building material procurement and application

3.Connection Methods

  • Socket Fusion with Adhesive:This is the most traditional and widely used connection method. After applying specialized PVC adhesive to the pipe end and the fitting socket, the parts are joined. The connection relies on the chemical fusion action of the adhesive to achieve a strong, sealed joint. This method is low-cost and simple to operate.
  • Coupler Assembly Connection:For confined spaces or special requirements in engineering projects, we provide an improved snap-fit type coupler. This connection method requires no adhesive, enabling quick assembly through physical snap-fit or threaded structures. It effectively addresses joint quality and appearance issues in tight spaces, improving installation efficiency.

4.Key Advantages & Selling Points

  • Comprehensive Safety Protection:Integrates six key protections—insulation, flame retardancy, compression resistance, moisture resistance, corrosion resistance, and pest/rodent resistance—creating an all-weather safety barrier for wiring. This eliminates hazards such as leakage, short circuits, and fires.
  • Excellent Installation Convenience:The conduit is lightweight, making it easy to cut and handle. It can be manually cold-bent at room temperature using only a spring, without the need for heating. This greatly simplifies the installation of complex wiring routes and improves work efficiency.
  • Eco-friendly & High Intrinsic Quality:Formulated with environmentally safe materials, free from heavy metals and plasticizers. The product uses raw materials with high resin content and low calcium carbonate filler, resulting in lower density and better flexibility. Its performance far exceeds that of standard products on the market.
  • Long Service Life & High Reliability: Resistant to acid, alkali, and corrosion; does not rust or degrade, ensuring long-lasting performance under normal use conditions. The smooth interior wall with a low coefficient of friction facilitates wire pulling without damaging cable insulation.

5.Product Applications

  • Civilian and Commercial Buildings:Concealed or surface-mounted protection for power and low-voltage wiring in residences, office buildings, shopping malls, hotels, etc.
  • Public Facilities:Electrical wiring systems in schools, hospitals, stadiums, airports, railway stations, etc.
  • Industrial Sector:Protection for lighting and power circuits in factory workshops and warehouses.
  • Special Requirement Environments:Suitable for areas requiring moisture, corrosion, and pest/ant resistance, such as equipment rooms and underground parking garages.

6.Testing & Certifications

  • National Standard Compliance:Products fully comply with mandatory and recommended national standards (GB/T 43815-2024, JG/T 3050-1998) and have passed relevant type tests.
  • International Authority Certifications:Can provide testing and certification support to meet international standards such as UL 651 (USA) and CSA C22.2 (Canada) based on customer requirements.
  • Green Building Material Certification:Products meet green building material evaluation requirements, supporting the development of green buildings.
  • Full-Range Performance Testing:Every production batch undergoes a complete set of physical and electrical performance tests, including insulation strength, flame retardancy, compression resistance, impact resistance, and drop tests.

7.Manufacturing Process Flow

  • Raw Material Batching and Mixing:Polyvinyl Chloride (PVC) resin, stabilizers, flame retardants, fillers (calcium carbonate), etc., are precisely weighed according to the formulation. They undergo high-speed hot mixing followed by cold mixing to produce a uniform dry blend.
  • Extrusion Molding:The dry blend is fed into a conical twin-screw extruder where it is plasticized and melted at suitable temperatures. It is then extruded through a die to form a continuous pipe parison.
  • Vacuum Calibration and Cooling:The pipe parison immediately enters a vacuum calibration tank for precise sizing of outer diameter and roundness. It then proceeds to a spray cooling trough for gradual cooling and final shaping.
  • Haul-off and Printing:A caterpillar haul-off unit provides steady pulling force. Simultaneously, permanent markings such as brand, specifications, type, and production date are printed onto the pipe surface.
  • Cut-to-Length and Inspection:Controlled by a length measuring device, the pipe is cut to precise lengths using a planetary cutter (chip-free). Finished products undergo strict inspection for appearance and dimensions, along with sampled performance testing, before being warehoused.

8.Packaging and Delivery

  • Standardized Packaging:Pipes are bundled for packaging, with a fixed quantity per bundle. They are wrapped in film or woven bags to prevent scattering and damage. Protective caps are fitted on pipe ends. Fittings are packaged in cartons or bags, clearly categorized. All packaging bears clear product information.
  • Efficient Logistics and Delivery:We have an established logistics partnership network. Depending on order volume and destination, we provide road or sea freight services. We support phased deliveries aligned with project schedules to ensure timely and orderly material supply at the construction site.

9.Sales Service

  • Pre-Sales:Provides complimentary product technical consultation, selection guidance, and project quantity estimation support.
  • In-Sales:Provides detailed product technical documentation and construction guidance manuals. For large-scale or key projects, technical personnel can be dispatched for on-site technical briefings and installation guidance.
  • After-Sales:
  1. Quality Assurance:Provides product quality guarantees in compliance with national regulations.
  2. Rapid Response:A dedicated service hotline ensures quick response to user needs.
  3. Technical Support:Provides technical consultation and support to assist in resolving application-related issues.
  4. Customer Training: Can organize product knowledge and application training sessions based on customer requirements

10.Company Strengths

  • Leader in Technical Standards:We actively participate in the formulation of national and industry standards. Our product lines strictly adhere to the latest national standards (GB/T 43815-2024), ensuring our technology remains at the industry forefront.
  • Stringent Quality Control, Green First:We control raw materials from the source, utilizing higher-cost eco-friendly formulations. Our products offer excellent performance and align with green building material trends. Some products have been included in authoritative green building material databases.
  • Complete System Solution Capability:We are not just a pipe supplier; we provide complete wiring protection systems including conduits, trunking, and various connection accessories, ensuring compatibility and optimal overall performance.
  • Strong Production Capacity and Supply Guarantee:We possess advanced production facilities and automated production lines with sufficient capacity to meet the concentrated supply demands of large-scale engineering projects and guarantee accurate delivery timelines.
Zhongcai(Sancai) Pipe has 20 years of industry experience and serves over 500 customers worldwide. Its advantages include:
  • Advanced production capacity: Automated production line with an annual output of over 100000 tons, meeting large-scale demand. R&D Strength: Collaborate with universities to continuously innovate products, such as anti-static PE pipes. Customer case: Successfully participated in the Asian municipal water supply project, with a customer satisfaction rate of 98%. Environmental Commitment: Use recyclable materials, reduce carbon footprint, and support green buildings.
  •  Strict quality control: Establish a sound quality management system, implement full process quality monitoring from raw material procurement to product delivery, and rigorously inspect every link to ensure reliable product quality.
  • Rich industry experience: With years of deep cultivation in the pipe and fittings industry, we have accumulated rich project experience and successfully served numerous large-scale municipal, construction, industrial and other projects, winning widespread recognition and praise from customers.

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