Cast iron and ductile iron pipe was long a lower-cost alternative to copper, before the advent of durable plastic materials but special non-conductive fittings must be used where transitions are to be made to other metallic pipes, except for terminal fittings, in order to avoid corrosion owing to electrochemical reactions between dissimilar metals (see galvanic cell).[18]
Shop with confidence from a team you can trust. We are the pioneers of the online plumbing supply industry and have a deep understanding of unique, hard-to-find plumbing parts. We opened our online store in 1995, and we're still going strong today. Born into a world without Google, surviving the dot-com bubble, and flourishing in our 25th year, we continue to offer unrivaled customer service and a vast inventory. Because we don't believe in minimum orders, you have the freedom to order exactly what you need, anytime, anywhere.
The Home Depot has a wide selection of high-quality plumbing parts including sump pumps, water heaters, HVAC systems, pipes and much more. The Home Depot even has eco-friendly plumbing options to help you save money and live green. If you need professional advice or installation assistance with any of your plumbing projects, turn to The Home Depot to help you finish your plumbing project. 

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