Alumasc Apex 100mm (4") x 1.83m Cast Iron Downpipe without Ears - Primed

Alumasc Apex Heritage cast iron round downpipes are designed to deliver the authentic appearance, durability, and long-term performance expected from traditional cast iron rainwater systems. Widely used across listed buildings, period homes, conservation projects, and architectural developments, these classic round cast iron downpipes provide a clean heritage finish built to last for decades.

Manufactured using traditional sand casting methods combined with modern quality control standards, Apex cast iron downpipes offer excellent dimensional accuracy, dependable fitment, and outstanding resistance against weather exposure, impact damage, and long-term exterior wear.

Available in 65mm (2.5”), 75mm (3”), and larger 100mm (4”) round downpipe sizes, the system is suitable for both residential and commercial rainwater applications where durability and authentic detailing matter.

Why Choose Apex Heritage Cast Iron Downpipes?

• Traditional round cast iron downpipe design suited to heritage and architectural projects
• Available in 65mm, 75mm, and 100mm downpipe sizes
• Manufactured using authentic sand cast methods
• Extremely strong, durable, and vandal resistant construction
• Ideal for listed buildings, period homes, churches, and conservation work
• Socketed cast iron joints for traditional installation detailing
• Manufactured to British Standard BS460
• Minimal maintenance requirements with a service life exceeding 40 years
• Cast iron is 100% recyclable and built for long-term exterior performance
• Compatible with Apex Heritage cast iron guttering systems and accessories.
  
  

Painted Black, Primed & Custom RAL Finishes

The Apex Heritage cast iron round downpipes are available factory painted black using a high-performance coating system developed for long-lasting durability and colour retention in exposed UK conditions.

Primed cast iron downpipes are stocked in 65mm and 75mm sizes for projects requiring on-site finishing or bespoke paint systems.

Custom RAL colour cast iron downpipes are available on request and professionally powder coated to order for heritage, conservation, and architectural specification projects.

Fast UK Delivery

At Cast Iron Warehouse, we specialise in supplying premium cast iron rainwater systems across the UK.

• Painted black cast iron downpipes: next working day delivery available when ordered before 11:30am, subject to stock availability. All sizes.
• Primed cast iron downpipes: stocked in 65mm and 75mm sizes
• Custom RAL powder coated downpipes: typically 7–10 working day delivery from point of order.