Charlotte Pipe and Foundry takes pride in being a family-owned, American-made leader in plumbing innovation while providing industry expertise for both cast iron and plastics systems and evolving to serve professionals in the field. 

As part of our commitment to keeping plumbing pros at the top of their game, Charlotte Pipe shares technical advice and product expertise every month here on the Behind the Pipe blog. In 2025, we published articles covering everything from piping-connection fundamentals to value engineering and CIPP lining.

Here are Charlotte Pipe’s five most-popular articles of 2025: 

1. “Examining the Consequences of Cured-in-Place Pipe Lining”
2. “Solvent Welding: How to Join Plastic Pipe and Fittings Like a Pro”
3. “CISPI 310: A Guide to No-Hub Cast Iron Connections”
4. “Evaluating Value Engineering for PVC vs. Cast Iron in Commercial Plumbing”
5. “6 DWV Installations Where Edge HP Enhances Performance”

In addition to Charlotte Pipe’s robust technical hub, literature shop, and Tech Tools app, these articles help break down complex topics into practical, real-world guidance you can apply on the job.

1. Examining the Consequences of Cured-in-Place Pipe Lining

A widely used technique for sanitary, storm sewer, and drinking water pipelines, cured-in-place pipe lining was developed to help restore damaged pipe with minimal surface disruption. However, there are several performance challenges to consider.  

2. Solvent Welding: How to Join Plastic Pipe and Fittings Like a Pro

Solvent cement is designed to help ensure tight, leak-free plastics systems, creating a cross-molecular bond that’s as strong as the pipe itself. Review the six steps required for secure joints, along with the available cement options. 

3. CISPI 310: A Guide to No-Hub Cast Iron Connections

CISPI 310 is the specification for couplings used in connecting hubless cast iron pipe and fittings for sanitary and storm drain, waste, and vent piping applications. Hubless couplings that fall under this standard work to provide a positive, reliable, corrosion-resistant seal.

4. Evaluating Value Engineering for PVC vs. Cast Iron in Commercial Plumbing

When is substituting PVC for cast iron truly valuable, and when does it create hidden risks? With over a century’s worth of expertise with both materials, Charlotte Pipe works to answer this question by examining eight application scenarios in commercial plumbing. 

5. 6 DWV Installations Where Edge HP Enhances Performance

Charlotte Pipe’s Edge HP Iron™ is built to protect against delamination and fight corrosion over time. With many of the same benefits found in traditional cast iron, Edge HP Iron boasts four main strengths for aggressive applications. 

Looking for even more industry knowledge? Start 2026 strong with additional insights from the Charlotte Pipe blog.