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Cast Iron Drainage

Showing all 16 results

  • Durable cast iron pipe designed for heavy duty applications.

    SML Below Ground Cast Iron Pipe x 3mtr

    Price range: £98.46 through £195.58
    This product has multiple variants. The options may be chosen on the product page
  • Heavy-duty ductile iron coupling.

    SML BG Ductile Pipe Coupling

    Price range: £16.54 through £33.90
    This product has multiple variants. The options may be chosen on the product page
  • High-quality cast iron bend 15°.

    SML Below Ground Cast Iron 15deg Bend

    Price range: £22.18 through £39.82
    This product has multiple variants. The options may be chosen on the product page
  • Cast Iron underground drainage bends pipe.

    SML Below Ground Cast Iron 30deg Bend

    Price range: £22.18 through £39.82
    This product has multiple variants. The options may be chosen on the product page
  • SML Below Ground Cast Iron 45deg Bend

    SML Below Ground Cast Iron 45deg Bend

    Price range: £22.18 through £39.82
    This product has multiple variants. The options may be chosen on the product page
  • Durable cast iron soil pipe with 88 degree bend.

    SML Below Ground Cast Iron 88deg Med/Long Radius Bend

    Price range: £52.00 through £156.10
    This product has multiple variants. The options may be chosen on the product page
  • durable 88 degree rest bend drainage.

    SML Below Ground Cast Iron 88deg Rest Bend

    £64.49
    This product has multiple variants. The options may be chosen on the product page
  • Durable Y 45deg Cast iron branch.

    SML Below Ground Cast Iron 45deg Y Branch

    Price range: £52.00 through £156.10
    This product has multiple variants. The options may be chosen on the product page
  • 88 deg Cast iron T fitting designed for effective drainage.

    SML Below Ground Cast Iron 88deg T Junction

    Price range: £49.24 through £77.74
    This product has multiple variants. The options may be chosen on the product page
  • Cast Iron 110mm Double Branch.

    SML Below Ground Cast Iron 68deg Double 100mm Branch

    £56.86 excl VAT £56.86
  • Cast Iron Plain Trap.

    SML Below Ground Cast Iron 100mm P-Trap

    £41.08 excl VAT £41.08
  • Durable Cast Iron Reducer.

    SML Below Ground Cast Iron 150x100mm Reducer

    £52.96 excl VAT £52.96
  • Blank end - cast iron end cap.

    SML Below Ground Cast Iron End Cap

    Price range: £8.28 through £11.80
    This product has multiple variants. The options may be chosen on the product page
  • SML Below Ground Cast Iron Inspection Chamber

    SML Below Ground Cast Iron Inspection Chamber

    Price range: £227.32 through £373.76
    This product has multiple variants. The options may be chosen on the product page
  • High-quality cast iron pipe fittings, hanging bracket.

    SML Below Ground Hanging Bracket

    Price range: £9.88 through £18.73
    This product has multiple variants. The options may be chosen on the product page
  • Access Pipes with Rectangular cover.

    SML Below Ground Access Pipe

    Price range: £98.80 through £154.61
    This product has multiple variants. The options may be chosen on the product page

Harmer SML cast iron pipe

At Castings Drainage, we supply high-performance Harmer SML cast iron pipework and fittings, engineered to deliver exceptional strength, corrosion resistance, and long-term reliability for domestic and commercial installations. Whether you are connecting soil directly to drain and sewer systems or managing a robust below ground drainage network, find your exact product category from the options above:

Explore Our Range

  • Pipes & Couplings: High-durability SML Cast Iron Pipe (3mtr lengths) paired with secure SML BG ductile pipe couplings to ensure a seamless and robust pipeline installation.
  • Bends & Branches: A comprehensive selection of flow-optimising components, including 15deg, 30deg, 45deg, and 88deg bends, rest bends, 45deg Y branches, and 88deg T junctions.
  • Junctions, Traps & Reducers: Specialist fittings designed for system transitions and flow control, featuring double branches, P-traps, reducers, and secure end caps.
  • Access, Chambers & Support: Essential structural components to complete your network, including inspection chambers, access pipes, and heavy-duty hanging brackets.

Key Benefits

  • Manufactured and tested in accordance with the European Standard BS EN 877.
  • Allows direct connection from soil to drain to sewer, supporting a robust below ground drainage system.
  • Provides excellent strength, corrosion resistance, and long-term reliability.
  • Suitable for both commercial and domestic drainage installations.

Browse our full range of Harmer SML pipes and fittings above, or contact our experts for tailored advice and recommendations. Every product meets strict industry standards to ensure maximum safety and performance across your entire drainage network. Get in touch with our team for bulk orders or technical support.

Please Note: All sizes and specifications correspond to our SML below ground cast iron product listings above.