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5680 Pecos Street , Denver, Colorado, United States

Memberships : American Institute of Steel Construction (AISC),National Steel Bridge Alliance (NSBA)
Industry : Steel/Iron
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Since Oct, 2017
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About Company

Longero is Colorado's premier industrial custom steel fabricator, welding shop, and metal former. Since 1923 we have served the needs of Denver, Boulder, Ft. Collins, Colorado Springs, Pueblo, Grand Junction and surrounding areas in manufacturing large steel and stainless steel weldments.

Longero was founded in 1923 by Phil Longo and Nick Vallero as a partnership engaged in boiler repair and sheet metal work. At that time the company was known as Longero Boiler and Sheet Metal Works, Inc. In 1930, the company moved to 3410 Brighton Blvd., Denver, CO. In April 1958 the machinery and equipment were sold to T.E. Mattox and J.F. McCauley who changed the name to Longero, Inc. In 1980, the physical plant was expanded from 6000 to 17,500 square feet adding several overhead cranes. In 1988, the company was purchased by SLG, Inc. who doubled the annual sales of the company.

In June 1993 the company was purchased by Iron Mountain Industries who has continued the strong growth trend. The company more than doubled its sales volume in less than three years. This has been due to the assembly of a truly great team of professionals in every aspect of the business. As the company has grown, the need for a larger facility was identified in 1995. As a result the company moved to its current facility in November of 1997. This move more than doubled the manufacturing space and increased sorely needed hook height to 24 feet. The facility is now capable of fabricating an 80,000 pound fabrication.In 2016 we celebrated our 93rd year as a company and look forward to serving your steel fabrication and forming needs for many years to come.

Mission Statement
To deliver to our customers the finest custom steel fabrication and forming in our chosen area of influence by providing superior quality, on-time delivery and professionalism. To support our employees with the finest management, facilities, and tools to accomplish their jobs and to compensate them as the finest craftsmen in their field.

Longero's Facilities
Our facility is located at 5680 Pecos Street within unincorporated Adams County in NW Denver, CO. The office space consists of roughly 4000 square feet, and includes state of the art, real-time order tracking and CAD systems. The manufacturing space includes 30,000 square feet indoors and 35,000 square feet under crane with the ability to accommodate an additional 19,125 square feet of indoor manufacturing space if necessary. Our south bay is equipped with (2) 10-Ton cranes, our center bay is equipped with a 5-Ton and a 3-Ton crane. Our north bay is equipped with (2) 3-Ton cranes. If needed two additional cranes can be erected to handle twenty five tons each. Hook height in all bays is 24'. Our south bay can handle an 80,000 lb. fabrication. In addition, the manufacturing facility is surrounded by three acres of land.

Our full-service steel fabrication plant located in Denver offers a variety of services including;

  • LARGE SPECIALTY FABRICATIONS: Longero fabricates carbon steel, stainless steel, and aluminum weldments. We can fabricate in weights up to 80,000 pounds (40 tons). Common fabrication projects at our plant are skids, platforms, water control gates, atmospheric tanks (non-pressure vessels), bins, hoppers, transitions, clarifiers, process equipment, and spiral stair cases.
  • WELDING: Longero offers full service metal welding for both small and large projects. All welders meet requirements of AWS D1.1 and/or AWS D1.6, and can also be certified as needed to meet welding procedures for specific jobs.  
  • METAL PROFILE ROLLING: Longero utilizes three angle roll machines in-house to meet your steel bending needs of all sizes. We are Colorado’s most experienced shop for high-quality angle rolling, pipe rolling, square tube rolling, rectangular tube rolling, beam rolling, HSS rolling, and channel rolling.

  • PRESS BRAKE WORK: Longero’s four press brakes allow us to bend both small and large steel plates. Our largest 400-ton press brake can bend up to 1 ½” plate and is 14’ long. Typical projects on our press brakes included bending of heavy plate, forming stair pans, forming transitions, forming cones, forming square to rounds, forming channels, and forming angles. Our brakes can be used to step brake carbon steel or abrasion resistant (AR) plates to manufacture blades, buckets and other wear surfaces.

  • PLATE ROLLING WORK: Longero can roll steel plate on our three plate rolls. We can roll plate as thick as 1 ½”, and up to 5/8” plate in 12' long sections. Typical plate rolling projects include arc segments, repads, pre-fabricated railing, bucket liners, and spiral stair stringers from rectangular tubing, channel and plate.

  • SHEARING: Longero has two shears in-house. Our impressive large shear can cut up to 1 1/4" thick carbon steel and 3/4" stainless steel in 12' sections.

Longero is American Institute of Steel Construction (AISC) quality certified for Intermediate Bridge with a Fracture Critical Members endorsement. This certification demonstrates our commitment to quality and we are proud to be one of only a few fabricators in Colorado with this endorsement of our quality control program. We will be undergoing certification for the AISC’s new Hydraulic Structures certification in 2017. 

Company NameLongero
Business CategorySteel/Iron
Address5680 Pecos Street
United States
ZIP: 80221
Year Established1923
MembershipsAmerican Institute of Steel Construction (AISC),National Steel Bridge Alliance (NSBA)
Hours of OperationMonday - Friday 7:30 a.m. - 4:00 p.m.
Company Services
  • Steel Fabrication
  • Steel Welding
  • Metal Rolling
  • Metal Bending
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