Sigma Tube & Bar

What Sigma Tube & Bar does

Sigma Tube & Bar is a privately held, Houston-based distributor of mechanical tubing and bar products serving the oil and gas industry. Founded in 2013 by a team of oil patch professionals led by founder and president Chris Friend, the company positions itself as a responsive, customer-focused alternative to large metal service centers, emphasizing quick quotes, same-day deliveries, and willingness to handle special requests.

The company's core product portfolio spans round bars (grades including 1018, 8620, 8630Mod, 4340, 4330V Mod, 4145, 4140, 4130M-7, and 4130 in sizes 3-32 inches), precision square blocks in grade 4130, hot finished tubing, cold drawn tubing, and stainless steel products (2205 Duplex, 17-4, 420, 410, 316, and 304). All products conform to AISI, ASTM, API, and customer-specific specifications. Sigma Tube & Bar complements its product line with in-house value-added services including heat treating (water, oil, and polymer quenching), machining (turning, trepanning, boring, honing, gundrilling, skiving, reaming, roller burnishing), cutting (laser jet, plasma, flame, saw), and comprehensive testing (non-destructive testing, fracture mechanics, corrosion testing, metallography, chemical analysis, hardness testing, and traceability verification).

The business operates a direct, sales-led, quote-driven go-to-market model targeting oil and gas customers primarily in Texas. The warehouse facility at 14315 W Hardy Rd in Houston holds ISO 9001:2015 and API Q1 certifications, providing the regulatory baseline required to supply upstream operators. Pricing is bespoke per quote and not publicly disclosed. The company has not raised external funding, has no disclosed investors, and operates without a parent company, keeping ownership with the founding team and private stakeholders.

Name

Sigma Tube & Bar

Legal name

Sigma Tube & Bar

Website

https://sigmatb.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Short description

Sigma Tube & Bar is a privately held Houston-based distributor of mechanical tubing, round bars, and stainless steel products serving oil and gas customers with same-day delivery and in-house heat treating, machining, cutting, and testing services.

Ownership category

akta.pro rank

Product category

Industrial Steel Distribution

NAICS

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (331210)

SIC

Steel Pipe & Tubes (3317)

akta.pro primary industry

Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)

akta.pro secondary industry

Long Products Manufacturing (Rebar, Wire Rod, Merchant Bar, Sections/Beams) (IMAKABAH)

Keywords

• Steel distribution services
• Oilfield tubular products
• Mechanical tubing supply
• Industrial bar products
• Metal processing services

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Steel Tubular and Bar Products Sales: Sigma Tube & Bar generates revenue through the sale of mechanical tubing and bar products, including round bars, square blocks, hot finished tubing, cold drawn tubing, and stainless steel products. Additional revenue is derived from value-added services including heat treating, boring, honing, cutting, and machine work.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Sigma Tube & Bar distributes mechanical tubing and bar products—including round bars, square blocks, hot finished tubing, cold drawn tubing, and stainless steel products—to the oil and gas industry. Products conform to AISI, ASTM, API, and customer-specific specifications. The company bundles these materials with value-added processing services such as heat treating, machining, cutting, and testing.

Product overview

Sigma Tube & Bar is a steel distributor and supplier serving the oil and gas industry with precision tubular and bar products. The product portfolio includes Round Bars, Square Blocks, Hot Finished Tubing, Cold Drawn Tubing, and Stainless Steel Products, all conforming to AISI, ASTM, API, and customer-specific specifications. The company complements its product offerings with value-added services including Testing, Heat Treating, Machining, and Cutting services. Founded in 2013, the company emphasizes quick quotes, same-day deliveries, and special requests handling.

Differentiator

Problem solved

Functional benefit

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves4 records

Expansion highlights2 records

Market position

Competitive moat3 records

Key risks1 record

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sigma Tube & Bar