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About

Sigma is a manufacturer and distributor of high pressure bolting specified by the American Petroleum Institute.

Sigma Distributes standard bolting and manufactures custom bolts to customer specifications and per print following careful details of the latest revisions. We are API 20E and ISO 9001 2000 certified and are on the approved vendor list of major wellhead manufacturers, energy and petrochemical companies worldwide.

Services
zinc plating
MP35 Bolts
custom bolts
CNC Machining
headed bolts
inconel bolts
Fluoropolymer Coating
hex head bolts
all thread studs
stud bolts
Contact
  • Wed 8:00 AM - 5:00 PM
    OPEN NOW
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