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SIGMA Corporation » Quality – Service – Commitment – Delivered.
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News & Announcements

  • Message from SIGMA President Larry Rybacki: Waterworks Industry Unites to Fight Childhood Cancer 08/07/2018
  • Hiring Outside Sales Representative for the states of Oregon and Washington 06/27/2018
  • SIGMA is implementing an increase on its line of Municipal & Construction Castings (MCC) 06/21/2018
Sigma Co Celebrating 30 Years

Waterworks Products

  • Fittings
  • Municipal Castings
  • Accessories
  • Fabricated Products
  • Pipe Restraint Products
  • Extended Products
  • Treatment Plant Division
  • HDPE Products (Raven)

Piping Products

  • Fire Protection Products
  • Plumbing Products
  • New Products

Drainage Solutions

  • Hydrotec Fiber Reinforced Concrete Trench Drains
  • Polylok Trench Drains & Drainage Products
  • Steel Trench Drains
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Waterworks Products

  • Accessories
  • Extended Products
  • Fabricated Products
  • Fittings
  • HDPE Products (Raven)
  • Municipal Castings
  • Pipe Restraint Products
  • Treatment Plant Division
  • SIGMA Line Card

Piping Products

  • Fire Protection Products
  • Plumbing Products
  • New Products

Drainage Solutions

  • Hydrotec Concrete Trench Drains
  • Polylok Trench Drains
  • Steel Trench Drains
  • Trench Drain Line Card
  • Trench Drain Case Studies

Price Lists

  • Waterworks Price Lists
  • Piping Products Price Lists
  • All Other Price Lists

SIGMA E-News Archives

  • 2017 E-News Archive
  • 2016 E-News Archive
  • 2015 E-News Archive
  • 2014 E-News Archive
  • 2013 E-News Archive
  • 2012 E-News Archive

Engineering

  • Certificates
  • FM/UL Approvals
  • Submittal Requests
  • Restraint Calculator Tool
  • Technical Support
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