Weldcoa can help you with the most basic of questions. “Help me choose the best lead material for the gas and pressure that I am using.” To the most complex, “What kind of equipment and budget do I need to fill my own EPA Protocols?” Weldcoa is there to help you reach your goals safely, on time and within your budget. We can help you establish budgets, manufacture or source the equipment you need. We can install it, train your people and support the long-term maintenance of our products.
" Someone at Weldcoa has done an excellent job hiring and training people with an emphasis on customer service. It doesn’t matter whether we’re working with an engineer, technician or office person about an invoice or shipment, their customer service makes Weldcoa the perfect partner to support our growth. "Mike Zeilman: Operations/Sales Manager, Decatur Site for S.J. Smith Company
Purchasing a Weldcoa product opens the door for you to access our deep bench of seasoned industry experts. Our experts spent years in the field dealing with the exact same issues that you are facing today. Having problems with a pump, a valve, bulk tank? Become a Weldcoa client and gain access to our knowledgeable team.
Please note: To support our commitment to quality, customer service, training, safety, and continuous improvement, communications with Weldcoa may be monitored, recorded, retained, and reviewed. This may include telephone calls, voicemail messages, emails, electronic messages, and other communications sent to or received from Weldcoa.
Recordings and communications may be used for quality assurance, employee training and development, customer service, documentation of business transactions and instructions, safety, security, dispute resolution, and other legitimate business purposes.
By communicating with Weldcoa, you acknowledge that your communications may be monitored, recorded, retained, and reviewed in accordance with applicable law.
Phone: 1(630) 806-2000
Weldcoa's main administrative office and manufacturing facility is located at: 335 East Sullivan Road, Aurora, Illinois 60505 USA
Weldcoa's automation and lead department as well as the Weldcoa Innovative Center (WIC) is located at: 338 East Sullivan Road, Aurora, Illinois 60505 USA. (This location is where most of our training classes and hosted seminars are located)
For your convenience, Weldcoa has two dedicated email channels to assist with your future needs. Each email address connects you to a specialized team, ensuring your inquiries are addressed promptly and effectively.
We are always here to help you swiftly and efficiently.

Located in Aurora, IL, Weldcoa is an innovative US manufacturer of products that store, transport, fill, supply and/or analyze compressed gas, cryogenic liquids, high pressure liquids and supercritical fluid. Our cross-disciplinary team of experts bring an in-depth knowledge of gases to every project. You can count on their passion and commitment to make your project a success.
Call 630-806-2000 or email us at solutions@weldcoa.com today to get started.