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The National Certified Pipe Welding Bureau

NCPWB saves you time and money with qualified welding and brazing procedures that reduce your risk of noncompliance.



NCPWB Resources Provide Welding-Specific Information.

Looking for welding or brazing procedures? Need to educate techs or customers about ASME code requirements? Seeking welding safety training tools?


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From Code Compliance To Technical Support, NCPWB Has You Covered.

Confused about compliance? Have questions about the NCPWB WPSs and BPSs? We’ll connect you to the right person for everything NCPWB.


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Are you planning to solder in a couple of dozen 1-1/2 inch brass control valves in that heating system you are installing in that high-rise building?

MCAA’18 Convention Registration is Open!

You are invited to join the MCAA family at our annual convention, this coming March 25-29 at the beautiful JW Marriott Hill Country resort in San Antonio, Texas. You can view the planning guide and register online at our special MCAA’18 website!

The MCAA and the UA have teamed up to provide additional financial relief to 357 field and office employees of our South Texas members who were victimized by Hurricane Harvey. Each employee is receiving a $500 relief check, with half coming from the MCAA Disaster Relief Fund and half from the UA’s Charitable Trust. This is in addition to the $1,000 relief check each employee already received from MCAA’s Disaster Relief Fund. Here’s the reaction of one of CFI Mechanical’s employees: “Chuck, once again I am floored by the generosity of others. Today I received a second check for disaster aide from the MCAA along with the UA Charitable Trust. Together with their members, they raised more to assist flood victims. This will help while waiting for the insurance company to decide what might or might not be covered. I have never been more proud to be a plumber for a union contractor that is so active in MCAA. Thank you again for your generosity!”

The UA/MCAA Labor Relations Conference will be held at The Mirage in Las Vegas, November 14-15. The theme of this year’s Labor Relations Conference will be “Highlighting Best Practices.” Want to join us? It’s still not too late to make your hotel reservation.

Come learn about the latest HVACR and plumbing products and services on Supplier Partnership Day at our Exhibitor’s Display on October 16, 2017. The MSCA CONNECT 2017 Education Conference will be held October 15-18, 2017 in Boca Raton, FL at the Boca Raton Resort and Club!

This week’s conference highlight is Tech Demos! Come join us at the registration area for demonstrations and display of all things Tech from October 16-18, 2017 at MSCA CONNECT 2017 Education Conference, to be held October 15-18, 2017.

Featured Resources
  • Business and Politics

    This bulletin provides advice, tools and information about the federal legislative process to help you be effective in presenting and discussing industry issues with your House and Senate representatives.

    Featured ResourceManagement Methods BulletinsManaging Your Business
  • Doing Business with a Customer in Bankruptcy

    This bulletin can help you avoid legal and other pitfalls that may affect your business relationship with a customer that has or may file for bankruptcy.

    Featured ResourceManagement Methods Bulletins
  • FAQs About FASB

    MCAA produced this document to assist member companies and their accountants in complying with the Financial Accounting Standards Board’s (FASB) disclosure requirements pertaining to an employer’s participation in multiemployer defined benefit pension plans. Questions? Please contact John McNerney.

    Managing Your Business

Visit the NCPWB Resource Center

NCPWB Benefits of Membership
NCPWB Networking
Network on Technical Issues

Network with pipe welding contractors, United Association folks, and welding experts. Nationally or as a member of one of our NCPWB Chapters.

NCPWB Technical Resources
Resources on Pipe Welding

Everything from lists of Certified Welders to technical resources and bulletins. NCPWB is focused solely on Pipe Welding, so if you’re in the business, you need to belong.

NCPWB Technical Support
Code Compliance And Technical Support
Confused about compliance? Have questions about the NCPWB WPSs and BPSs? We’ll connect you to the right person for everything NCPWB.

National Certified Pipe Welding Bureau (NCPWB)

Are you a contractor looking to learn more about how NCPWB tools can help ensure that your company’s piping installations meet or exceed what is required by the codes and state regulations? Would you like to reduce your liability risks? This video is for you!

ASME B31 Piping Codes – An Engineer’s Guide
Are you an engineer looking to optimize your interactions with the contractors who install your systems? This video provides insights into piping fabrication, installation, examination and testing to help you deliver systems that provide long-lasting, trouble-free service at the lowest possible cost.