MU203 is a 40mm diameter MUPVC waste pipe, typically available in 3-meter or 1-meter lengths, designed for solvent weld applications. It is part of Polypipe's System 2000 range for above-ground drainage. 
Key Details
Material: MuPVC (Modified unplasticized Polyvinyl Chloride).
Diameter: 40 mm (external diameter is 42mm for a 40mm system).
Length: Commonly sold as 3-meter or 1-meter lengths.
Joining Method: Designed for solvent welding using solvent cement for a permanent, secure joint. It is not compatible with push-fit systems.
Application: Used for residential and commercial above-ground waste water management systems.
Colour Options: Available in White, Black, and Solvent Grey.
Certification: Certified to BS EN 1329-1 (MUPVC System 2000) and holds BBA certification.
Durability: MuPVC is the preferred choice for waste systems that may encounter higher temperatures and a wider range of chemicals. 
Product Codes
The full product code depends on the length and color: 
MU203W: 40mm, 3m length, White.
MU203B: 40mm, 3m length, Black.
MU203SG: 40mm, 3m length, Solvent Grey. 
This product is a fundamental component of the Polypipe solvent weld waste system, providing a robust solution for various waste water management needs.