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Structured-wall · Type A

Hollow-Wall Spiral-Wound HDPE Pipe (Type A)

Hollow-wall construction with smooth inner and outer surfaces

Type A Hollow-Wall Spiral-Wound Pipe is a structured-wall HDPE pipe for gravity drainage and sewers. Its wall is wound from a hollow polyethylene profile, giving smooth inner and outer surfaces, and it contains no steel reinforcement.

Wall construction
Hollow wall, spiral-wound
Material
PE80 / PE100
Reinforcement
None — all polyethylene
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Last updated . Reviewed by Shunfang Engineering Team

Black large-diameter spiral-wound PE structured-wall pipe in the factory yard
  • Open end of a PE structured-wall pipe
  • Person beside a large-diameter PE structured-wall pipe
  • Wound structured-wall pipe yard

Technical specifications

TypeType A
Wall constructionHollow wall, spiral-wound
Inner surfaceSmooth
Outer surfaceSmooth
ReinforcementNone — all polyethylene
MaterialPE80 / PE100
JointingSocket joint with elastomeric seals, electrofusion band, extrusion welding where approved
DutyGravity flow

Applications

  • Stormwater DrainageLarge-flow urban stormwater lines
  • Sewer & WastewaterMunicipal and industrial gravity sewers
  • CulvertsBuried high-capacity flow paths
  • Industrial EffluentCorrosive and process wastewater discharge
  • Sea Outfall & IntakeCoastal discharge and intake lines, by project review

Features and benefits

  • Smooth inner and outer walls.
  • All polyethylene, with no steel.
  • PE80/PE100: flexible, corrosion-resistant and fatigue-resistant.
  • Low roughness and no scaling keep the flow capacity.

Jointing and installation

  • Socket joint with elastomeric seals

    A spigot end with sealing rings is pushed home into the socket end.

  • Electrofusion band

    A band with embedded heating wire is clamped over the joint and fused.

  • Extrusion welding

    Used where approved for the diameter and duty.

Standards and quality

  • DIN 16961Wall section benchmarked for designer review · Design benchmark, not a certification
  • ASTM F2720Wall section benchmarked for designer review · Design benchmark, not a certification

Certified management systems

  • ISO 9001:2015
  • ISO 14001:2015
  • ISO 45001:2018

Project references

ProjectLocationSpecification
Tashan South Road Type-A pipe supplyChinaDN400–DN1400
Jinan 2022 sewer–stormwater separationJinan, ShandongDN300–DN600 · SN12.5 · 30 km
Rizhao Port projectRizhao, ShandongDN1600
Shijiazhuang north drainage retrofitShijiazhuang, HebeiDN2600
  • Tashan South Road Type-A pipe supply
    Tashan South Road Type-A pipe supplyDN400–DN1400
  • Jinan 2022 sewer–stormwater separation
    Jinan 2022 sewer–stormwater separationDN300–DN600 · SN12.5 · 30 km
  • Rizhao Port project
    Rizhao Port projectDN1600
  • Shijiazhuang north drainage retrofit
    Shijiazhuang north drainage retrofitDN2600

Photos

  • Stormwater drainage pipe stock
    Stormwater drainage pipe stock
  • Gravity sewer outfall discharging water
    Gravity sewer outfall discharging water
  • Large staged pipes for culvert and flood control
    Large staged pipes for culvert and flood control
  • Offshore positioning for marine outfall
    Offshore positioning for marine outfall

Frequently asked questions

What is a Type A hollow-wall spiral-wound pipe?

It is a structured-wall HDPE pipe for gravity drainage and sewers, wound from a hollow polyethylene profile so that both the inner and outer surfaces are smooth. It contains no steel.

What diameters and ring stiffness classes are available?

Diameter and ring stiffness are confirmed per project; measured examples are shown on this page.

How does Type A differ from Type B?

Type A is all polyethylene with smooth inner and outer walls; Type B adds steel wire inside the ribs for larger diameters.

How are the pipes joined?

With a socket joint and elastomeric seals, an electrofusion band, or extrusion welding where approved.

What do you need for a quotation?

Diameter basis (DN/ID or DN/OD), ring stiffness or burial depth and traffic load, medium, line length and destination.

Compare with Type B: Steel-Wire-Reinforced HDPE Structured-Wall Pipe

ParameterType A: Hollow-Wall Spiral-Wound PipeType B: Steel-Wire-Reinforced HDPE Structured-Wall Pipe
Wall constructionHollow wall, spiral-woundStructured wall with steel-wire-reinforced hollow ribs, spiral-wound
Inner surfaceSmoothSmooth PE layer
Outer surfaceSmoothRibbed, with bonded PE protection

Need steel-wire reinforcement or diameters up to 6 m? See Type B.

Send us your project parameters

Tell us the diameter, pressure or ring stiffness, quantity and destination. We reply with the next technical step.

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Export contact

Michael, Customer Manager

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