We stock domestic welded steel pipe made from carbon steel for wholesale distributors nationwide, in continuous weld (CW) and electric resistance weld (ERW), black and galvanized, 1/8″ through 18″.

Our broad product range of Domestic Welded Steel Pipe, coupled with our strong commitment to inventory, allows us to offer industry-leading fill rates.

We carry a broad range of Domestic Continuous Weld (CW) pipe, stocked with anti-microbial coating for UL/FM approved products. CW’s uniform grain pattern and smooth surface cause less wear and tear on threading tools and dies. Our pipe is stored indoors at our 12 distribution centers across the U.S. and is fully covered during delivery.

We have strong relationships with multiple domestic steel pipe mills that go back 40+ years as the leading master distributor of steel pipe. This enables us to stock the best quality and broadest range of domestic steel pipe products for use in Plumbing & Heating, PVF, HVAC, Fire Sprinkler and other applications.

Continuous Weld (CW)

• SureThread Continuous Weld (CW) Domestic Welded Steel Pipe from Wheatland Tube
• SureThread CW pipe is officially approved to ASTM A53, Grade B standard
• Schedule (SCH) – SCH40, SCH80
• Sizes – 1/8″ through 6″ NPS (Nominal Pipe Size)
• Lengths – 10′ and 21′
• End Finish – Plain End (PE), Threaded & Coupled (T&C), Threaded Both Ends (TBE)
• Coating – Black and Hot-Dip Galvanized
• Specs – ASTM A53, Type F, Grade B

Electric Resistance Weld (ERW)

• Schedule (SCH) – SCH10, SCH40
• Sizes – 1-1/4″ through 18″ NPS (Nominal Pipe Size)
• Lengths – 10’6″ and 21′
• End Finish – Plain End (PE), Roll Grooved
• Coating – Black and Hot-Dip Galvanized
• Specs – ASTM A53, Type E, Grade B and ASTM A135, Type E, Grade A and Grade B

CW vs. ERW: Which Domestic Welded Steel Pipe to Stock

CW is the go-to for threaded plumbing, gas and mechanical work in smaller sizes, since it threads cleanly and is easy on dies. ERW covers larger diameters and the Schedule 10 lightwall and roll grooved product used in fire sprinkler systems. Carrying both lets your counter cover contractors from 1/8″ threaded nipples to 18″ grooved mains. Buy what you need, mix it with plastic and copper on one order, and keep inventory lean while steel prices move.

Need weight per foot for freight or load planning? Try our pipe weight calculator. Schedule 10, 40, and 80 dimensions are in our steel pipe size chart.

Our domestic welded pipe is available to ASTM A53 Grade B. Compare types and grades in our ASTM A53 Grade B pipe guide.

More Steel Pipe Info:

• Pipe Specifications Overview
• Steel Pipe Size Chart and Schedule
• Pipe Weight Calculator
• ASTM A53 Pipe

Sharpen Your Competitive Edge With United Pipe & Steel

• Become more competitive and manage your risk on volatile commodity products while turning inventory more quickly.
• Break bundles and take advantage of low weight minimums while mixing and matching products, including copper tube, PVC pipes, threaded rod, strut and all other products we carry.
• Buy what you need, when you need it.
• Take advantage of routine ‘milk run’ delivery routes for service once or twice per week.