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Superior Fabrication welcomes all inquiries from anyone interested in its operations. Please send all comments or questions to us by completing the form. 


801 S. Eastern Ave.
Elk City, OK 73644


Leader in Design, Welding, & Manufacturing of Pressure Vessels & Equipment since 1997. SFI is a custom fabrication company that specializes in the fabrication of oil and natural gas production equipment.

Bobtail Truck and Trailer

SFI Trailer Division holds a valid ASME “R”, "U", and "T" stamp and is able to perform DOT cargo tank inspections and repairs.
We offer aluminum and steel fabrication and repairs in our 5 bay trailer shop: suspensions, brake systems, vacuum pumps, gear pumps, centrifuges, hydraulics, electronic liquid level control systems (Titan and Garnet ) PTO, Wet Kits and much more.
Our warehouse is well stocked and maintained with parts inventory for cargo tank trailers and vacuum trailers while our steam bay can clean or de-gas your trailers for Confined Space Entry.

  • Bobtail Tanks and Trailer
     -DOT Certified
  • Multi-Compartment
  • Pressurized
  • Vacuum
 Custom Built Tank Bed

Custom Built Tank Bed

 Mueller Sales and Service

Mueller Sales and Service