Seibel Modern MFG. & Welding Corp.

Seibel Modern Mfg., since its conception in 1944, has remained an industry leader in industrial welding and steel fabrication. The company has remained a small family, non-union corporation currently employing 75 people including an office staff of 9.

From the companies’ origins in the garage of its founder, Seibel Modern Mfg. has expanded to a 70,000 square foot facility located in Lancaster, NY.


The business now boasts over 13 million dollars in sales despite its lack of a sales staff. Work is acquired through repetitive customers and customer referrals. This philosophy has landed the company work on projects both local and national such as the Franklinville, NY steel pony truss for which Seibel Modern won an American Institute of Steel Construction/National Steel Bridge Alliance award in 1998.

2020 Award of Merit, AZP Grinder Strengthening, Material Supplier/Manufacturer - Seibel Modern Manufacturing & Welding. Please read more…

Seibel Modern Mfg., holds multiple certifications in both welding and steel fabrication.


Steel Fabrication

  • AISC Certified Steel Fabricator
  • PADOT Bulletin 15 Approved Fabricator
  • New York State DOT Approved Fabricator
  • New York City DOT
  • New York State Thruway Authority
  • MSHA
  • MASS Highway



  • Certified Welders
  • NYS DOT Certified
  • AWS Certified
  • In-House CWI

We Specialize in...

Structural Steel Fabrication

Misc. Steel Fabrication

Bridge Component Fabrication

Concrete Precast Embedments

Stainless Steel Weldments

Tunneling & Mining Steel Components

Industrial Welding

Battery Cases

Are you interested in a fabrication or welding service not listed here?  Click here to contact us, we may be able to assist you.