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  • What is the Maximum Direct Tap Size for Ductile Iron Pipe?

    What is the Maximum Direct Tap Size for Ductile Iron Pipe?

    By Jeff Houser   09/10/2020  In Installation Technical

    With Ductile iron pipe (DI pipe), typical service taps can be installed directly into the wall of the pipe, which is called “direct tapping.” The ability to use direct tapping eliminates the need for tapping saddles. And the ease at which DI pipe can be "hot tapped" helps avoid the issue of unhappy consumers because their service and pressure are not impacted by the addition of a new tap. The waterworks community frequently asks us, “How big of a tap will DI pipe allow?” The simple, most conservative response, not having interrogated the user as to their DI pipeline particulars, would be as follows:

  • Ductile Iron Pipe - Fact or Fiction?

    Ductile Iron Pipe - Fact or Fiction?

    By Roy Mundy, P.E., ENV SP, Assoc. DBIA   01/18/2020  In Products Technical

    McWane Ductile is committed to offering educational resources based upon sound engineering data to our clients and potential clients. One of these resources includes banners that display certain information about our product. 

    While attending a recent conference, we were challenged on the information these banners contained. In fact, one unknown individual walked by the booth and shouted, “Lies... that information is lies!” without the courtesy of stopping to discuss why he felt that way or what exactly was his objection.

  • UPDATED - Ductile Iron Pipe Versus HDPE - A Comparative Narrative

    UPDATED - Ductile Iron Pipe Versus HDPE - A Comparative Narrative

    By Ken Rickvalsky, ENV SP, AMPP CT   05/29/2025  In Comparisons Products Technical

    Selecting the right pipe material is essential for the longevity and success of any water infrastructure project. While Ductile iron pipe (DI pipe) and High-Density Polyethylene (HDPE) each offer distinct benefits, their differences in strength, performance, and long-term cost are significant. This article serves as a refresh of our previously published article in November 2019. It outlines key comparisons to help engineers and specifiers make informed decisions based on project-specific conditions, such as soil type, pressure, and environmental factors.

  • Why Are the AWWA Standards Important to Ductile Iron Pipe?

    Why Are the AWWA Standards Important to Ductile Iron Pipe?

    By Dan Flaig Shawn Smith   10/14/2022  In Products Technical

    Have you ever wondered what’s behind the AWWA standards? What do they mean? And why do we need them? They’re listed all the time in specifications, mysterious numbers on plans. Have you ever reviewed them to know why they are important for working with Ductile iron pipe (DI pipe)? In this Iron Strong Blog, we will briefly cover some of the applicable standards for DI pipe and how they help you complete your job safely, successfully, and on time.

  • How Do the Trench and Backfill Protect the Pipe?

    How Do the Trench and Backfill Protect the Pipe?

    By John Simpson P.E., ENV SP, AMPP CT   12/02/2021  In Installation Technical

    Utility pipelines provide for some of the most basic needs within our society. Essential services, such as supplying potable drinking water to our homes and businesses or sending wastewater away, are possible because of a network of buried pipelines. Whatever pipeline materials are used, they are expected to meet minimum service qualities such as withstanding leakage. This resiliency to leakage eliminates waste of our precious drinking water and prevents polluted soils from wastewater in the pipeline's proximity.

  • How Does Proper Bedding Allow a Pipe to “Sleep Well?"

    How Does Proper Bedding Allow a Pipe to “Sleep Well?"

    By Ken Rickvalsky, ENV SP, AMPP CT   01/22/2021  In Installation Technical

    Did you know the mattress industry is one of the oldest continuous industries in the world? The first mattresses were believed to have been manufactured in 37 BC in Persia. Today, more than 35 million mattresses are shipped world-wide to replace those that have been in service for an average of seven years. So, what does this have to do with Ductile iron pipe (DI pipe), you ask? This article will discuss how setting improper bedding in a pipe trench can cause sleepless nights for the water company and its crews due to pipe failures, seemingly always at night — as it is my experience that most large main breaks typically occur after dark!

  • Handling Ductile Iron Pipe: From Truck to Trench

    Handling Ductile Iron Pipe: From Truck to Trench

    By Dan Flaig   09/12/2020  In Installation Technical

    At McWane Ductile, we are proud to manufacture the strongest, most durable, and most flexible piping material available to the waterworks industry. Even with these great attributes, we still take great care when handling Ductile iron pipe (DI pipe). In this Iron Strong Blog, we’ll cover some key tips to safely handling your DI pipe once it arrives at your job site and throughout the construction or your pipeline project.

  • Updates to Envision® and How Ductile Iron Excels in The New Rating System

    Updates to Envision® and How Ductile Iron Excels in The New Rating System

    By John Johnson, ENV SP, NACE CT   07/23/2020  In Environmental & Safety Installation Products

    This Blog Reflects Significant Updates for Envision Manual V3. As we know, America's infrastructure is in crisis! According to the American Society of Civil Engineers, the estimated investment needed is $1 Trillion over the next 25 years for underground water infrastructure. This investment, as well as the ever-increasing cost of electricity, limited water supply, ever-decreasing natural resources, and environmental concerns, are driving the need for change. Change on how infrastructure is designed and constructed – utilizing more sustainable design and construction practices. ENVISION is designed to provide guidelines for these changes to North American infrastructure. In short, it is a rating system approach very similar to LEED Building Certification; however, with the focus on infrastructure.

    Envision not only asks, ‘Are we doing the project right?’ but also, ‘Are we doing the right project?’

  • Considering Resiliency When Choosing Pipe Materials

    Considering Resiliency When Choosing Pipe Materials

    By Roy Mundy, P.E., ENV SP, Assoc. DBIA   07/01/2020  In Environmental & Safety Installation

    In this third installment about Sustainability and Resiliency for our Iron Strong Blog, we are focusing on the resiliency of pipe and pipelines as a result of natural disasters such as storms, floods, and wildfires. While earthquakes and seismic events also need to be considered, much has been written on those aspects and we will discuss them in our next installment. Resiliency means many different things to many different people, and its definition is often a matter of perspective and need. Put simply, resiliency is the ability to survive, resist, or recover from damage due to some external hazard.

  • Sustainability & Resiliency – The Impact of Recycling and Using Recycled Products

    Sustainability & Resiliency – The Impact of Recycling and Using Recycled Products

    By Stuart Liddell   06/05/2020  In Environmental & Safety Products

    In this second installment of our Iron Strong Blog on Sustainability and Resiliency,  we will focus on recycling and the recyclability of various pipe materials. As you may know, Ductile iron pipe is made from recycled iron and steel scrap, making it not only a recycled product but a recyclable product.

    Okay, since that fact has been stated, why read further? Well, besides being the only primary full-size-range piping product made from recycled material, you should know why this is important to you, me, and everyone else. We will look at the impact of recycling on cities and towns as well as countries and the planet.

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Latest Posts

  • Developing an Asset Management Plan for Your Future Utility or Engineering Organization
    Developing an Asset Management Plan for Your Future Utility or Engineering Organization By Roy Mundy, P.E., ENV SP, Assoc. DBIA 12/04/2025  In Comparisons Industry
  • Can Joining Water Works Industry Organizations Help You Grow Professionally?
    Can Joining Water Works Industry Organizations Help You Grow Professionally? By Dustin Henderson 10/21/2025  In Careers WaterWorks
  • How Does Ductile Iron Pipe Provide Proven Resilience to Seismic Events?
    How Does Ductile Iron Pipe Provide Proven Resilience to Seismic Events? By Jacob Lovin, ENV SP 09/04/2025  In Products Resiliency Technical
  • How to Secure Green Reserve Sustainability Incentives Using State Revolving Funding & Ductile Iron Pipe
    How to Secure Green Reserve Sustainability Incentives Using State Revolving Funding & Ductile Iron Pipe By Cole Mitcham, P.E. 07/29/2025  In Energy Products Technical
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Products
  • Products
  • Ductile Iron Pipe
    • Tyton® Joint Pipe
    • TR Flex® Restrained Joint Pipe
    • Mechanical Joint Pipe
    • Mechanical Joint Lock Joint Pipe
    • Fabricated Flange and Wall Pipe
    • Ball and Socket Joint Pipe
    • Long-Span Pipe
    • Permaloy™ Pipe
    • Seismic Flex Coupling™
  • Gaskets
    • Tyton® Gaskets
    • Mechanical Joint Gaskets
    • Flange Gaskets
    • Sure Stop 350® Gasket
    • Specialty Gaskets Service & Usage
  • Fabrication
    • Fabricated Flange and Wall Pipe
    • Grooved Pipe
    • Welded Outlet Pipe
    • Thread-o-Lets
    • Weld-On Boss
  • Fittings and Accessories
    • Bronze Wedge
    • Cable Bond
    • Pipe Joint Lubricant
    • Mechanical Joint Accessories
    • Seismic Flex Coupling™
    • TR Flex® Accessories
    • TR Flex® Fittings
    • V-Bio® Encasement
  • Linings
    • Cement-Mortar Lining
    • Glass Lining
    • Protecto 401™ Lining
    • Ceramapure™ PL90 Lining
  • Coatings
    • Asphaltic Coating
    • Zinc-Coating
    • Ceramawrap Coating
    • V-Bio® Enhanced Polyethylene Encasement
  • Technical Bulletins
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