Skip to content
Tuscan Foundry Products Logo Black
Find out more about our products by giving us a call
0333 987 4452
Linkedin Envelope
  • About Us
  • Buildings
    • Churches
    • Industrial
    • Residential
  • Finishes
  • Products
  • Support
  • Restoration Index
    • Conservation Rooflight Guide
  • Contact
  • News & Articles
  • About Us
  • Buildings
    • Churches
    • Industrial
    • Residential
  • Finishes
  • Products
  • Support
  • Restoration Index
    • Conservation Rooflight Guide
  • Contact
  • News & Articles
£0.00 0 Basket
Tuscan Foundry Products Logo Black
  • About Us
  • Buildings
    • Churches
    • Industrial
    • Residential
  • Finishes
  • Products
  • Support
  • Restoration Index
    • Conservation Rooflight Guide
  • Contact
  • News & Articles
  • About Us
  • Buildings
    • Churches
    • Industrial
    • Residential
  • Finishes
  • Products
  • Support
  • Restoration Index
    • Conservation Rooflight Guide
  • Contact
  • News & Articles
£0.00 0 Basket

Established 1893   |   BS 460:2002 Certified   |   UK & International Supply   |   Expert Technical Support   |   0333 987 4452

Shop / Cast Iron Gutters & Pipes / Cast Iron Rectangular Pipes & Fittings / Rectangular Pipe to Round Connector
Rectangular-to-Round-Cast-Iron-Downpipe-Connector
CODE RTCON Category Cast Iron Rectangular Pipes & Fittings

Rectangular Pipe to Round Connector

£265.40 – £444.00Price range: £265.40 through £444.00 ex VAT (£318.48 – £532.80 inc VAT)

Cast iron connector from 100x75mm to 150x100mm rectangular downpipe to 65mm, 75mm or 100mm round, in primer or black painted finish.

Clear

UK delivery from £45. Longer items are despatched palletised. See delivery rates.

The Rectangular Pipe to Round Connector changes a rectangular downpipe to a round section, for connection to a round pipe, a round gully inlet or an underground drain socket.

It is used at the foot of a run where the below-ground drainage takes a round pipe, or where a rectangular run must join an existing round system.

Round outlets are 65mm, 75mm or 100mm. The 100mm round outlet is not made for 125mm x 70mm pipe.

All fittings in our rectangular range are cast iron to BS 460:2002, made to the same moulded profile so pipes and fittings line up neatly on the elevation. Every fitting is supplied either in primer, ready for painting on site, or in factory black. For listed buildings and conservation areas we also offer hand-applied linseed oil paint in heritage colours, which stays breathable and flexible and is straightforward to maintain. Stocked items are usually dispatched within 5 to 7 working days; allow around 6 to 7 weeks where a linseed oil finish is specified.

Rectangular pipe sizes: 100mm x 75mm (4″ x 3″), 125mm x 70mm, 125mm x 100mm (5″ x 4″) and 150mm x 100mm (6″ x 4″).

Suitable for listed buildings, conservation areas and heritage restoration. For specification support or a project quotation, call 0333 987 4452.

Additional information

Size/Finish

Primer 100mm x 75mm, Primer 125mm x 70mm, Primer 125mm x 100mm, Primer 150mm x 100mm, Black Painted 100mm x 75mm, Black Painted 125mm x 70mm, Black Painted 125mm x 100mm, Black Painted 150mm x 100mm

Round Outlet

65mm, 75mm, 100mm

Cross-reference

Primer 100mm x 75mm, 65mmRT4325A
Primer 100mm x 75mm, 75mmRT4325B
Primer 100mm x 75mm, 100mmRT4325C
Primer 125mm x 70mm, 65mmRT5325A
Primer 125mm x 70mm, 75mmRT5325B
Primer 125mm x 100mm, 65mmRT5425A
Primer 125mm x 100mm, 75mmRT5425B
Primer 125mm x 100mm, 100mmRT5425C
Primer 150mm x 100mm, 65mmRT6425A
Primer 150mm x 100mm, 75mmRT6425B
Primer 150mm x 100mm, 100mmRT6425C
Black Painted 100mm x 75mm, 65mmXRT4325A
Black Painted 100mm x 75mm, 75mmXRT4325B
Black Painted 100mm x 75mm, 100mmXRT4325C
Black Painted 125mm x 70mm, 65mmXRT5325A
Black Painted 125mm x 70mm, 75mmXRT5325B
Black Painted 125mm x 100mm, 65mmXRT5425A
Black Painted 125mm x 100mm, 75mmXRT5425B
Black Painted 125mm x 100mm, 100mmXRT5425C
Black Painted 150mm x 100mm, 65mmXRT6425A
Black Painted 150mm x 100mm, 75mmXRT6425B
Black Painted 150mm x 100mm, 100mmXRT6425C

FAQ Categories

  • Cast Iron Airbricks
  • Cast Iron Airvents
  • Cast Iron Hopper Heads
  • General
  • Gutter & Pipe Brackets
  • Gutters & Pipes
  • Heating
  • Rooflight Openers
  • Soil Pipes
All FAQ
What building types is the H530 cast iron hopper head suited to?

What building types is the H530 cast iron hopper head suited to?

The H530 measures 330mm wide x 150mm deep x 350mm high, making it well suited to Georgian and Victorian terraces, where a compact, narrow footprint is needed.

What is the difference between satin chrome and polished chrome rooflight openers?

What is the difference between satin chrome and polished chrome rooflight openers?

Satin chrome has a brushed, low-sheen finish suited to contemporary interiors, while polished chrome has a bright mirror finish. Both are available in the telescopic hand winder range at Tuscan Foundry. The choice typically depends on the existing ironmongery specification.

How do I choose the right size rooflight opener for my rooflight?

How do I choose the right size rooflight opener for my rooflight?

Size selection depends on the distance between the mounting point and the rooflight frame, and the desired throw (opening distance). Our telescopic openers are available in 150mm, 250mm, and 300mm; the screw-jack stay is available in 300mm with a 250mm throw. For guidance on sizing for your specific rooflight, please call 0333 987 4452 or use the contact form.

What building types is the Pultney Tapered Hopper Head suited to?

What building types is the Pultney Tapered Hopper Head suited to?

The Pultney Tapered Hopper Head is well suited to Georgian and Regency townhouses, Victorian terraces, rural farmhouses, barns, and functional estate buildings where a plain, period-correct hopper is the appropriate specification. It also works well on new heritage-style construction. Its unfussy, chamfered form makes it a versatile choice across a wide range of traditional building types.

What pipe connection sizes do your cast iron hopper heads accept?

What pipe connection sizes do your cast iron hopper heads accept?

Our cast iron hopper heads are available with 65mm, 75mm and 100mm round outlets, 75mm, 100mm and 125mm square outlets, and 100x75mm, 125x100mm and 150x125mm rectangular outlets, to match the downpipe already on site or specified for the project.

What is the difference between Traditional Express and LCC soil pipe?

What is the difference between Traditional Express and LCC soil pipe?

Traditional Express (TX) is a cast iron push-fit soil system. Socketless pipes are joined with push-fit sockets and couplings using rubber seals, so there is no caulking on site. LCC uses caulked socket-and-spigot joints and a bitumen coating. TX is quicker to install and can be painted; LCC is the closer match to an original Victorian stack. Our Traditional Express vs LCC guide compares the two in detail.

What finishes are available on your cast iron hopper heads?

What finishes are available on your cast iron hopper heads?

Our cast iron hopper heads are available in a choice of finishes including primer, painted, and specialist heritage finishes. Please call us on 0333 987 4452 or submit an enquiry to discuss the right finish for your project.

Are cast iron access pipes suitable for listed buildings?

Are cast iron access pipes suitable for listed buildings?

Yes. Cast iron access pipes to BS 460 are the like-for-like choice for listed and period buildings, and fitting access points avoids damaging historic pipework when clearing blockages. We recommend confirming any changes with the conservation officer.

What building types is the Iron Works Hit & Miss Vent in Antique Black suited to?

What building types is the Iron Works Hit & Miss Vent in Antique Black suited to?

The Antique Black finish suits Victorian, Edwardian, and inter-war buildings where ventilation ironwork was painted rather than polished — estate houses, terrace housing, civic buildings, and rural properties. It is also correct for listed buildings and conservation area properties requiring like-for-like replacement of original ornamental cast iron vents.

What is a corner hopper head and when do I need one?

What is a corner hopper head and when do I need one?

A corner hopper head collects rainwater from two gutters running at right angles and channels it into a single downpipe. They are typically required at internal roof valleys, on hipped roofs, and wherever two runs of gutter converge at a corner. The Regent H1A is designed specifically for this application and is sized to suit the most common gutter profiles.

Related products

  • Rectangular-Cast-Iron-Side-Pipe-Offset_Cast-Iron-Rectangular-Downpipe-Side-Offset

    Rectangular Pipe Offsets Side

    £284.50 – £1,983.80Price range: £284.50 through £1,983.80 ex VAT (£341.40 – £2,380.56 inc VAT)
    Select options This product has multiple variants. The options may be chosen on the product page
  • Cast Iron Rectangular Pipe Earband Plain

    Rectangular Pipe Earband Plain

    £103.70 – £201.00Price range: £103.70 through £201.00 ex VAT (£124.44 – £241.20 inc VAT)
    Select options This product has multiple variants. The options may be chosen on the product page
  • Cast Iron Rectangular Pipe Build In Holderbat

    Rectangular Pipe Build In Holderbat

    £130.70 – £411.90Price range: £130.70 through £411.90 ex VAT (£156.84 – £494.28 inc VAT)
    Select options This product has multiple variants. The options may be chosen on the product page
Tuscan Foundry Products Logo White

CONTACT US

Sales & Customer Services:
0333 987 4452

Tyn-Y-Clyn
Llanafan Fawr
Builth Wells
Powys LD2 3LU
United Kingdom

FOLLOW US

Twitter

MESSAGE US

ABOUT US
  • About Us
  • News
  • Testimonials
  • Gallery
  • About Us
  • News
  • Testimonials
  • Gallery
PRODUCTS
  • Bespoke Commissions
  • Cast Iron Soil Pipes
  • Cast Iron Gutters & Pipes
  • Heating & Cast Iron Radiators
  • Hardware & Spares
  • Cast Iron Radius Guttering
  • Bespoke Commissions
  • Cast Iron Soil Pipes
  • Cast Iron Gutters & Pipes
  • Heating & Cast Iron Radiators
  • Hardware & Spares
  • Cast Iron Radius Guttering
SUPPORT
  • Brochures
  • Delivery
  • International Shipping
  • Downloads
  • Surveys & Visits
  • Rooflight Guide
  • Brochures
  • Delivery
  • International Shipping
  • Downloads
  • Surveys & Visits
  • Rooflight Guide
CONTACT
  • Contact
  • Referral Scheme
  • FAQ
  • Privacy Policy
  • Terms And Conditions
  • Contact
  • Referral Scheme
  • FAQ
  • Privacy Policy
  • Terms And Conditions
Tuscan Foundry Products Logo Black
Find out more about our products by giving us a call
0333 987 4452

Tuscan Foundry Products, Tyn-Y-Clyn, Llanafan Fawr, Builth Wells, Powys LD2 3LU, United Kingdom

© Tuscan Foundry Products 2026

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish.AcceptReject Read More
Privacy & Cookies Policy

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Non-necessary
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
SAVE & ACCEPT