Heavy Duty Stainless Steel 304 No Hub Coupling Pipe Connector – China Suppliers & Factory with EPDM and Chloroprene Gaskets
⭐ 1. Key Selling Points
UPC Listed & ASTM A888 Compliant for North American Construction Projects
304 Stainless Steel Band + Heavy-Duty German Style T-Bolt Clamp
Multi-Layer Orange Reinforced Rubber Seal, Anti-Leakage & Anti-Aging
Flexible Joint Allows 3°-5° Angular Deflection & Thermal Expansion Compensation
Fast Installation, No Welding / Flange Required, Easy Pipeline Maintenance
Full Sizes DN50-DN300 Available, Custom Thickness & Width Supported
📋 2. Product Basic Information
| Item | Specification Details |
|---|---|
| Brand | TJTC |
| Product Name | Heavy Duty No Hub Coupling |
| Main Material | Strap: 304 stainless steel; Bolt/nut: stainless steel; Gasket: EPDM rubber/chloroprene rubber (orange reinforcement layer or blue reinforcement layer) |
| Certification | UPC Certified, CSA Certified, ASTM A888 |
| Applicable Pipe | W Type Hubless Cast Iron Drain Pipe, DWV PVC Pipe Transition Joint |
| Standard Sizes | DN50, DN75, DN100, DN150, DN200, DN250, DN300 |
| Application System | Building Drainage, Sewage, Rainwater, Vent DWV Pipeline |
| Feature | Shock Resistant, Flexible Connection, Corrosion Resistant, Space Saving |
| Packing | Carton Packing, Pallet Loading for Sea Shipment |
🏢 3. Wide Application Scenarios
Construction Type
- High-rise residential buildings
- Commercial office buildings
- Hospitals & schools
- Shopping malls & hotels
- Underground parking lots
Pipeline System
- Indoor vertical drainage risers
- Horizontal branch sewage pipes
- Buried main drainage pipes
- Rainwater collection pipelines
- Building vent DWV systems
Matching Pipe
- Hubless W-type cast iron drainage pipe
- Transition connection between cast iron pipe and PVC DWV pipe
Sales Market
- North America (USA, Canada)
- Southeast Asia
- Middle East
- Large-scale domestic engineering projects
🛡️ 4. Quality Control & Certification Support
Complete UPC certification file for customs clearance and local engineering inspection in North America
Raw material incoming inspection: stainless steel thickness test, rubber aging resistance test
Finished product hydraulic leakage test under 0.3MPa working pressure
Batch production tracking, all sizes have stable dimensional tolerance
Support third-party inspection before shipment as customer required
📦 5. Packaging and Shipping
Frequently Asked Questions (FAQ)
Q1: What standards do TJTC Heavy Duty No Hub Couplings comply with?
A1: Our couplings are fully UPC listed, CSA certified, and compliant with the ASTM A888 standard. This ensures they meet the strict building codes and requirements for North American construction projects.
Q2: Can these couplings be used to transition from cast iron to PVC pipes?
A2: Yes, TJTC Heavy Duty No Hub Couplings are designed for connecting W-type hubless cast iron drainage pipes and can also be used as transition joints between cast iron pipes and PVC DWV pipes.
Q3: What are the main materials used in the coupling?
A3: The outer shield and bands are made of premium 304 stainless steel, accompanied by heavy-duty German-style T-bolt clamps. The inner sealing gasket is made of high-quality EPDM or chloroprene rubber, featuring an orange or blue reinforcement layer for enhanced durability and leak protection.
Q4: Does the coupling support thermal expansion and angular deflection?
A4: Yes, the flexible joint design allows for 3° to 5° of angular deflection and compensates for thermal expansion and contraction within the pipeline system, reducing stress on the pipes.
Q5: What sizes are available, and do you support customization?
A5: We provide a full range of standard sizes from DN50 to DN300. Additionally, we support custom thickness and width requirements to meet specific engineering demands.
Q6: What quality control tests do the couplings undergo before shipping?
A6: Every batch undergoes rigorous raw material testing (stainless steel thickness and rubber aging resistance) and a finished product hydraulic leakage test under 0.3MPa working pressure. We also support third-party pre-shipment inspections upon customer request.