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Product introduction

Earthquake Resistance Pipe

Earthquake Resistance Pipe PE Double-Wall Pipe
  • It is a tube made of high density polyethylene material by extruding a rectangular profile with a hollow groove shape in the spiral direction. It has a cross-shaped structure, the inner and outer surfaces are smooth, and the perfect joint is maintained. It is a product with excellent corrosion resistance and durability. It has a stable and sturdy structure to prevent leakage.
Ring Stiffness
  • 4~12.5 kN/m2
Features
  • Excellent chemical resistance (acid and alkali wastewater, salt)
  • Excellent impact resistance, water tightness and water permeability
Earthquake Resistance Double-Wall Pipe (ER-DP) Performance
Item Unit Performance Test Method
PE Double-Wall Pipe
Ring Stiffness KN/㎡ Nominal Ring Stiffness standard KS M 3500-1
150-200 12.5 or higher
250-600 8 or higher
700-1200 4 or higher
Ring Stiffness test - No cracks, breaks, or damage
Impact test - No cracks, breaks, or damage
Density g/㎤ 0.941 or higher
Melt mass g/10min 1.6 or less (190°C, 5.0 kg)
Flow index
Yield tensile strength N/㎟ 20.0 or higher
Batch test Wt.% 0.10 or less
Carbon black content % 2.0~3.0%
Thermal stability Minutes over 20
NCLS hr over 24

Earthquake Resistance Multi-Wall Pipe (ER-MP) Performance
Item Unit Performance Test Method
PE Multi-Wall Pipe
Ring Stiffness KN/㎡ Nominal Ring Stiffness standard KS M 3500-2
150-200 16 or higher
250-600 12.5 or higher
700-1200 8 or higher
Ring Stiffness test - No cracks, breaks, or damage
Impact test - No cracks, breaks, or damage
Melt mass g/10min 1.6 or less (190°C, 5.0 kg)
Flow index
Density g/㎤ 0.941 or higher
Yield tensile strength N/㎤ 20.0 or higher
Batch test Wt.% 0.10 or less
Thermal stability Minutes over 20
NCLS hr over 24
Carbon black content % 2.0~3.0%

Remarks (The dimensions and tolerances of ER pipes follow the dimensions and tolerances of PE double-wall pipes and PE multi-wall pipes.)

  • ❶ Tolerance of inner diameter: 150 (± 4.5mm), 200~600 (± 5.1mm), 700~1200 (± 6.4mm)
  • ❶ Tolerance of pipe wall thickness (total thickness): (150~250)mm pipe ±8%, 300mm or larger pipe ±5%
  • ❸ Tolerance of pipe length: (0~2)%
  • ❹ The minimum pipe wall thickness refers to the thickness of the structured pipe wall on the fluid flow side.
  • ❺ The cut length of the pipe may be subject to agreement between the parties.