Application Background for PVC Pipe Fittings

PVC Fittings (such as pipe fittings, valves, pipe clips, etc.) are high-rigidity, corrosion-resistant, and critically sealed infrastructure components used in construction/municipal applications. Their production is characterized by significant material processing challenges, high sensitivity to efficiency and cost, and prominent environmental pressures.

Material Properties:

• Primarily Rigid PVC (UPVC).

• Poor thermal stability with a narrow processing window (160-190°C).

• High melt viscosity.

• Releases corrosive gases (HCl) upon decomposition.

Product Requirements:

▶ Pressure Resistance and Sealing Performance (≥1.6 MPa hydrostatic pressure test).

▶ Chemical Corrosion Resistance (in acidic/alkaline/saline environments)

▶ Dimensional Stability (assembly interface tolerance: ±0.1 mm)

▶ Low Cost (highly price-sensitive for municipal engineering projects)

Challenges in Manufacturing PVC Pipe Fittings via Injection Molding

● Poor thermal stability and unique flow characteristics of PVC material;

● HCl gas corrodes metal components, shortening equipment lifespan;

● High-precision temperature control is required; localized overheating causes decomposition, while temperature inconsistency compromises product quality.

Our Technical Solutions

• PVC machine
• Standard with double core pulling device for Fitting molds.
• Air fan cooling equipment on the barrel, PID temperature control
• Special screw and barrel for PVC/CPVC system.
• Widened security doors to compatible with core pulling cylinder structure of

• 

  Customer
  Turnkey Solution
• 

  Machine: HXM850PVC
• 

  Machine: HXM658PVC
• 

  Machine: HXM428PVC

• 01
  
  Process & Mold Analysis & Design

  ● Raw Material Selection
  ● Product Design
  ● Mold Flow Analysis
  ● Mold Design Recommendations

• 02
  
  Equipment Selection Recommendations

  ● Product Performance
  ● Product Quality
  ● User-Friendliness
  ● Safety Requirements

• 03
  
  Whole-Plant Planning Recommendations

  ● Production Line Flow
  ● Layout, Man, Macie Marcrdng according to Process Flow
  ● Peripheral Automation
  ● Smart Connectivity

• 04
  
  Turnkey Solution Delivery

  ● Professional Installation and Commissioning
  ● On-Site Operator Training
  ● Molding Process Training

• 05
  
  After-Sales Service Solutions

  ● Preventive Maintenance (PM)
  ● Equipment Upgrade