TRM is the manufacturer of ductile iron products. Ductile iron also called ductile cast iron, spheroidal graphite iron, or nodular cast iron, is a type of cast iron invented in 1943. While most varieties of cast iron are brittle, ductile iron is much more flexible and elastic, due to its nodular graphite inclusions.

The products with standard BSEN 545 and BSEN 598.
BSEN 545 – Ductile iron pipes, fittings accessories and their joints for water pipelines.
BSEN 598 – Ductile iron pipes, fittings accessories and their joints for sewerage applications.