Mechanical Contractor

CK Supply: An Industry-Leading Mechanical Contractor Supply Company

For decades, CK Supply has supplied plumbers and HVAC mechanical contractors with high-quality industrial gases. We have a full range of bulk and specialty gases for any construction purpose.

A Leading Mechanical Contractor Supply Partner That Powers Your Business

CK Supply understands that plumbing and HVAC mechanical contractors require a steady supply of industrial gas for the welding needs. Reach out today and see the wide range of services we offer.

Providing Quality Industrial Gases for Plumbing Welding Tools and HVAC Welding Equipment

Quality control is taken very seriously at CK Supply. We’re a customer-driven company that prides itself on being professional and responsive. With five relation locations in Missouri and Illinois, we deliver gases for any mechanical contracting application:


Argon is a colorless, odorless gas used to protect the welding environment from the outside atmosphere.

Our gas cylinders are available in various sizes, and we provide argon as a compressed gas or liquid.


Acetylene is a highly flammable, colorless gas primarily used with cutting torches and other types of welding techniques. Acetylene produces heat that generates temperatures over 5,000 degrees and is one of the most efficient fuel gases available.

CK Supply provides laboratory-tested and certified acetylene. Our cylinders are easily transported to any worksite and help keep your operation running smoothly.


Hydrogen‘s high melting and boiling point make it a widely used gas in many mechanical contracting processes. Some of the applications of hydrogen include:

  • Heat treating
  • Parts manufacturing
  • Welding processes

CK Supply offers lab-tested and certified hydrogen in sizes ranging from small cylinders to liquid bulk tanks.

Blue Flame Plus

Blue Flame Plus is well suited for heavy burning and heating because it produces a high flame temperature of 6,000 degrees. Blue Flame Plus can cut, heat, and braze metal quickly and efficiently.

CK Supply sells Blue Flame Plus in five-cylinder sizes and bulk tanks up to 30,000 gallons.


Nitrogen is a colorless and tasteless gas that has various applications across many industries, including pressure testing and blanketing.

CK Supply specializes in distributing nitrogen tanks of various sizes. Our headquarters in St. Louis features an automated fill plant capable of filling several cylinder banks simultaneously.

Can’t find the gas you need listed above? CK Supply provides hundreds of other specialty gases and mixtures to meet industry requirements.

Welding Supplies for Mechanical Contracting

CK Supply offers plumbing welding tools and HVAC welding equipment with a variety of applications. Our selection of welding supplies include:

  • MIG and TIG welding machines
  • Stick welding
  • Plasma cutting
  • Welding tables

We are a certified warranty repair center and offer rentals for your short-term welding needs.

Mechanical Contractor Supply Vending Solutions Provided by CK Supply

CK Supply now offers Industrial Vending Solutions for regular managing and tracking of inventory. We have partnered with SupplyPro to provide savings to businesses by reducing consumption, waste, and theft. Our vending solutions increase productivity and eliminate stock outs with automated ordering.

CK Supply is dedicated to helping our customers meet their objectives, and industrial vending is another example of how we have invested in technology to help increase efficiency. Contact CK Supply today to see how we can help with your mechanical contractor supply needs.

Contact Our Customer Sales Specialists To Discuss Your Particular Gas Requirement At (314) 644-3500.

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