PVC-U Pipes and Fittings for Building Drainage
PVC-U Pipes and Fittings for Building Drainage
Execution Standard: T/CECS 10411-2024
Material: Main components: Unplasticized polyvinyl chloride resin, environmentally friendly calcium-zinc stabilizers, etc.
Diameter Range: Common range: 40 mm – 200 mm Extended range: Up to 1600 mm
Applications: Discharge of domestic sewage and wastewater in residential buildings. Roof rainwater drainage systems for buildings. Non-pressure buried drainage for municipal and industrial areas.
Features: Corrosion-resistant with long service life, excellent fluid performance, lightweight and easy to install, safe and environmentally friendly.
Customization Supported.
Description
1.Product Introduction
PVC-U (Unplasticized Polyvinyl Chloride) pipes for building drainage are manufactured primarily from polyvinyl chloride resin, with necessary additives, using an extrusion molding process. They are designed for drainage systems within buildings. This product features excellent corrosion resistance, is resistant to scaling, has low flow resistance, is lightweight, easy to install, and cost-effective. It is one of the most widely used materials in modern building drainage systems, suitable for discharging domestic sewage, wastewater, and rainwater from within buildings.
Main Raw Material | Polyvinyl Chloride (PVC) resin |
Nominal Outside Diameter (dn) | 40mm, 50mm, 75mm, 110mm, 160mm, etc. (Compliant with GB/T 5836.1) |
Wall Thickness (e) | Nominal wall thicknesses complying with standard classifications (e.g., S25, S20, etc.) |
Pipe Length | Typically 4m or 6m; customizable according to agreement |
Tensile Yield Strength | ≥ 40 MPa |
Elongation at Break | ≥ 80% |
Vicat Softening Temperature | ≥ 79 °C |
Drop Hammer Impact Test (0°C) TIR | True Impact Rate ≤ 10% |
Density | 1.35 – 1.50 g/cm³ |
Ring Stiffness | ≥ 4 kN/m² |
Flattening Test | No rupture when flattened to 50% of the outer diameter |
Longitudinal Reversion Rate | ≤ 5% |
Joint Sealing Performance | No leakage under the specified water pressure (e.g., 0.05 MPa) |
Long-term Service Temperature | ≤ 45°C |
Instantaneous Drainage Temperature | ≤ 90°C |
Chemical Resistance | Resistant to corrosion from domestic sewage, rainwater, and common chemicals |
3.Connection Methods
- Socket Fusion with Adhesive:One end of the pipe is plain, the other is an expanded socket. During installation, the plain end is inserted into the socket of another pipe. Specialized PVC-U adhesive is applied to the joining surfaces, quickly bonding and curing to form a permanent seal. This method offers simple construction, excellent sealing, and high joint strength.
- Elastomeric Seal Ring Connection:For some large-diameter pipes or specific application requirements, connections can be made using sockets pre-fitted with rubber seal rings. This is suitable for sections requiring a degree of flexibility or where future disassembly for maintenance is desired.
- Auxiliary Connections:Connections to accessories like access fittings, cleanouts, and expansion joints also follow the corresponding socket fusion or threaded connection methods.
4.Key Advantages & Selling Points
- Excellent Fluid Performance:Smooth inner wall with low coefficient of friction ensures smooth drainage and resists clogging. Excellent self-cleaning properties minimize scaling and fouling.
- Robust and Durable:Features good impact resistance, chemical corrosion resistance, and aging resistance. Unaffected by sewage, wastewater, and chemicals, it offers a long service life comparable to that of the building itself.
- Lightweight and Economical:Weighing only about 1/6 of equivalent cast iron pipes, it saves time and labor in handling and installation, significantly reducing transportation and construction costs for notable overall economic benefits.
- Fire Retardant:PVC-U material has good self-extinguishing properties and a high oxygen index, meeting building fire safety requirements.
- Environmentally Friendly and Energy-Saving: Low energy consumption in production, and waste material is recyclable, aligning with green building and sustainable development principles.
- Easy Installation:Socket fusion is simple, fast, and unaffected by weather, effectively shortening project timelines.
5.Product Applications
- Building Interior Drainage Systems:Waste and soil stacks (vertical pipes) and branches (horizontal pipes) for domestic sewage and wastewater in residences, offices, hotels, schools, etc.
- Building Rainwater Drainage Systems: Piping for collecting and discharging rainwater from roofs, balconies, and courtyards.
- Auxiliary Drainage Works:Drainage pipes for air conditioning condensate, basement drainage, kitchen and bathroom branch drains, etc.
- Suitability:For applications where continuous drainage temperature does not exceed 45°C and instantaneous drainage temperature does not exceed 90°C.
6.Testing & Certifications
- Execution Standards: Products are strictly manufactured and tested in accordance with national standards GB/T 5836.1-2018 (pipes) and GB/T 5836.2-2018 (fittings). Also compliant with relevant industry application standards such as JGJ/T 314-2016.
- Authoritative Testing: Regular submission of samples to nationally recognized authoritative testing institutions for type testing, covering all physical/mechanical properties and hygiene indicators.
- Factory Inspection:Each production batch undergoes strict dimensional measurement, visual inspection, and necessary sampling for performance tests like hydrostatic pressure and drop hammer impact before leaving the factory, ensuring 100% compliance.
- Relevant Certifications:Can obtain certifications like the China Environmental Labeling Product Certification and Recommended Product Certificates for Engineering Construction, providing strong support for green building projects and bidding on key projects.
7.Manufacturing Process Flow
- PVC resin and additive batching → High-speed hot mixing → Cold mixing → Metered feeding to extruder → Melting, plasticization, and extrusion → Vacuum calibration and cooling → Spray cooling → Haul-off → Cut-to-length → Socketing (forming the socket end) → Finished product inspection → Printing markings → Packaging and warehousing.
8.Packaging and Delivery
- Standard Packaging:Pipes are bundled for packaging, typically in weights suitable for manual handling, wrapped externally with plastic film or woven bags to prevent scratches and contamination. Fittings are packaged in cartons or bags. Packaging is clearly printed with product name, specifications, standard number, production date, manufacturer information, and handling instructions.
- Storage & Transport:Pipes should be stacked straight on a level surface, height not exceeding 1.5 meters. Avoid severe impact, throwing, direct sunlight, and rain during transport.
- Delivery Assurance:Can flexibly arrange production and logistics according to customer order requirements, ensuring timely delivery to the job site and providing detailed shipping documentation.
9.Sales Service
- Pre-Sales:Provides free technical consultation, product selection guidance, and project quantity estimation. Can offer customized solutions for non-standard products based on special project requirements.
- In-Sales:Provides detailed product technical data and construction specification manuals. For large-scale or key projects, technical personnel can be dispatched for on-site technical briefings and installation guidance.
- After-Sales:
- Quality Assurance:Provides long-term quality assurance for products under normal conditions of transport, storage, and proper installation/use from the date of manufacture.
- Rapid Response:Ensures a response within 24 hours for user feedback, providing remote guidance or on-site support based on the urgency of the issue.
10.Company Strengths
- Scale & Quality:Possesses advanced fully automated production lines and large-scale production capacity. Controls raw material quality from the source, ensuring stable product performance and ample supply.
- R&D Capability:Maintains a dedicated R&D center for continuous improvement of formulations and processes. Product performance metrics exceed national standards, and new products (e.g., noise-reducing, antibacterial) can be developed based on market trends.
- End-to-End Quality Control:Strictly implements an ISO 9001 quality management system, achieving full-process, multi-stage quality monitoring from raw material intake to finished product dispatch, with online inspection at key process points.
- Professional Service Network:Has established a nationwide sales and service network supported by an experienced technical team, capable of providing timely, professional, and localized service to customers across the country.
- Brand & Reputation:Highly regarded in the building materials sector, with products widely used in numerous landmark buildings and key public projects, symbolizing quality and reliability.
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.
