Product Overview

PVC-U Plain Drainage Fittings are essential components for constructing non-pressurized wastewater and sewer piping systems. Manufactured from unplasticized polyvinyl chloride (PVC-U), these fittings are designed to ensure smooth flow, leak-free joints, and long-term durability.
Available in a wide variety of configurations, they are compatible with standard PVC-U drainage pipes and support quick, easy installation for both new builds and renovations.
These fittings are suitable across all brands within the Gongchi Group and offer consistent performance from premium to economy-level projects.

‍

Key Features

• Produced from rigid, high-strength PVC-U material
• Excellent chemical and corrosion resistance
• Lightweight yet durable structure for easy handling
• Compatible with solvent welding or rubber ring connections
• Smooth internal surfaces reduce buildup and improve flow
• Available in wide range of shapes and sizes for system flexibility
• Resistant to UV, mold, and root intrusion in underground use

‍

Available Sizes & Standards

• Outer diameters range: 50mm to 300mm or customized
• Elbows & Bends
  • 90° Elbow
  • 45° Elbow
  • Long Radius Bend
  • Double 90° Elbow (Back-to-Back)
  • 90° Elbow with Access Cap
• Tees, Crosses & Branches
  • Equal Tee
  • Reducing Tee
  • Y Branch (45°)
  • Double Y Branch
  • Four-way Cross Tee (Double Tee)
  • Y Branch with Access Cap
• Traps & Drainage Components
  • P Trap
  • S Trap
  • Water Seal Trap
  • Floor Drain Trap with Grating
  • Overflow Box / Water Box
  • Anti-odor Trap with Insert
  • Trap with Cleanout Access
• End Caps & Connectors
  • End Cap (Plain)
  • Threaded Screw Cap
  • Male Threaded Adapter
  • Inspection Opening Fitting
  • Socket Coupling
  • Reducing Coupling
• Fittings with Flanges / Fixing Accessories
  • Closet Flange
  • Ring with Nail (Fixing Clamp / Wall Support)
  • Pipe Hanger with Screw
  • Grated Vent Cover
  • Inspection Plug with Screw Thread

Applications

• Indoor and outdoor drainage systems
• Residential and commercial wastewater piping
• Rainwater and roof drainage
• Underground sewerage connections
• Vent and inspection access points

‍

Certifications

• ISO 9001 – Quality system certified
• CE Certification – For European market
• GB/T 5836.2 – Chinese standard for PVC-U drainage fittings
• Tested for long-term performance in sanitary environments

‍

Packaging & Delivery

• Box-packed by fitting type and size
• Labeled with product codes, sizes, and specifications
• OEM options available for logos and carton printing
• Supplied in export cartons or mixed-type packing as required

Export & Market Position

PVC-U Plain Drainage Fittings are supplied under all Gongchi Group brands – including Gongchi, Huangpin, JiuSheng, Dishui, BenSu, and Shuanggu – allowing customers to choose the right balance of price and performance.
These fittings are widely exported for use in residential construction, municipal drainage, and infrastructure projects across Asia, Africa, and the Middle East.