Services

Piping Systems

Carbon Steel Piping

Carbon steel is the most common and cost-effective choice for high-pressure, high-temperature industrial service. It is used for steam lines, process piping, oil & gas transport, compressed air, hydraulic systems, and structural supports (Schedule 40, 80, and higher wall thicknesses).

Welding Processes

Shielded Metal Arc Welding (SMAW / Stick) – Primary method for field fabrication and repairs.
Gas Tungsten Arc Welding (GTAW / TIG) – Used for root passes to ensure full penetration and high-quality internal bead.
Gas Metal Arc Welding (GMAW / MIG) and Flux-Cored Arc Welding (FCAW) – Faster fill passes for productivity on larger projects. All welders are ASME Section IX qualified, and procedures are qualified to the applicable B31 code. We perform 100% visual inspection, and non-destructive testing (x-ray, mag-particle, or ultrasonic) as required through our partners.
Orbital Welding (Automatic TIG) – Produces consistent, crevice-free, sanitary internal welds with full penetration and minimal heat-affected zone. Perfect for straight runs and repeatable quality.
Manual TIG Welding – Used for complex fittings, branches, and field modifications by our highly skilled sanitary welders. We meet code welding standards.

Stainless Steel Sanitary / Hygienic Piping

Sanitary piping is required wherever cleanliness and clean-in-place (CIP) capability are critical—food processing, dairy, beverage, pharmaceutical, and biotech plants. We fabricate and install 304L and 316L stainless-steel tubing (typically 1–6 inch) with polished or electropolished finishes.

HDPE (High-Density Polyethylene) Piping

HDPE is lightweight, flexible, and highly resistant to chemicals, abrasion, and corrosion. It is ideal for potable water, wastewater, chemical transfer, slurry lines, natural gas distribution, and buried or above-ground industrial piping.

Joining Methods

Butt Fusion & Electrofusion Welding – The preferred heat-fusion process creates a monolithic, leak-free joint stronger than the pipe itself (no internal beads or crevices).
Mechanical Joints – Flanges, MJ couplings, compression fittings, or transition adapters for quick connections to valves, pumps, or other materials.

Copper Piping

Copper tubing (Type K, L, M) offers superior thermal conductivity and natural corrosion resistance. It is widely used in commercial HVAC, plumbing, process cooling lines, and some industrial heat-exchange applications.

Joining Methods

Soldering (Soft Solder) – For standard water and low-pressure lines (up to 250 °F).
Silver Brazing / Hard Solder – Higher-temperature and higher-pressure joints.
ProPress® Mechanical Press-Fit System – Flame-free, press-to-connect fittings that
dramatically reduce installation time and eliminate hot-work permits in many facilities. Ideal for retrofits and occupied spaces.

PVC, CPVC, and Other Thermoplastic Piping

  • ● PVC (Polyvinyl Chloride) – Schedule 40/80 pipe for cold-water service, drainage, irrigation, chemical transport, and cooling-tower lines.
  • ● CPVC (Chlorinated PVC) – Handles hot water and higher-temperature chemicals up to 200°F.
  • ● PEX, ABS, and Specialty Plastics – Where flexibility or specific chemical resistance is needed.

Joining Methods

Solvent-cement welding (creates a chemical bond)
Threaded, flanged, or mechanical grooved connections

These systems are fast to install, lightweight, and corrosion-free in many industrial and commercial environments.

Additional Industrial & Commercial Piping Systems we install:

  • ● Stainless-Steel Piping (304/316) – Corrosive or high-purity process lines; welded with the same TIG/SMAW processes as carbon steel but with specialized procedures to prevent carbide precipitation.
  • ● Chrome-Moly & High-Alloy Piping – High-temperature and high-pressure power and refining applications.
  • ● Fiberglass Reinforced Plastic (FRP) / Composite Piping – Extremely corrosive chemical and acid services.
  • ● Ductile Iron Piping – Large-diameter water mains and fire-protection systems (mechanical joint or flanged).
  • ● Instrumentation Tubing & Hydraulic/Pneumatic Lines – Stainless or copper with compression or welded fittings.

Why Choose Longhorn Industrial Contractors?

Certified industrial welders and fusion technicians on staff
Full in-house fabrication shop and mobile welding rigs
Turnkey design-build, retrofit, and emergency repair capability
Strict adherence to safety, quality, and environmental standards
Competitive pricing with regional delivery speed

Whether you need a new process line, a complete plant repipe, or routine maintenance on existing systems, our team has the expertise and equipment to deliver reliable, code-compliant piping systems that keep your facility competitive.

Contact us today to discuss your next piping project. Longhorn Industrial Contractors — Built Tough, Delivered Fast

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