50 years of experience

Superior quality and reliability in every fitting

Welcome to FLO-MAC offering an extensive fitting inventory of buttweld pipe fittings ranging from schedule 10 through XXH. Please use our web site to find the fittings you need for your project. If you need special/custom fittings not seen on our site you can contact us today for more information, and be sure to download a catalog.

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Our Company

With over 50 years of experience in dealing with various alloys associated with the industry, we also offer…

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Our Facility

Our 75,000 square foot manufacturing facility is located in Los Angeles, California and houses our

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Custom Fittings

In addition to our normal catalog Buttwelding Fittings, FLO-MAC offers numerous capabilities…

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About our company

About FLO-MAC

We set the standard for quality and reliability

Since our inception in 1974, FLO-MAC has been manufacturing the highest quality buttweld fittings in America. We specialize in the manufacturing of reliable custom fittings, short runs, and expedited deliveries to the pipe and fitting industry in compliance with our contractual requirements.

Did you know?

Quality assurance is our top priority

All products are manufactured under the Quality Assurance Program established by FLO-MAC and provided at optimum cost and with the quickest possible delivery. It’s just another way we increase Customer Satisfaction.

In-House Efficiency

Message from the management

FLO-MAC custom buttwelding fittings are manufactured in Los Angeles, California in accordance with ASTM, ASME, and other governing specifications as they apply to the various alloys.

Our over 50 years of experience allows us to offer conversions of customer furnished materials into fittings and other shapes.

Superior quality

Customer satisfaction

FLO-MAC has the capability of manufacturing and processing operations in house to facilitate a smooth and efficient production flow, thus aiding our quality and customer satisfaction.

If you have questions or a need for special configurations. Contact us today and let us earn your business.

Pipe Fittings

ASTM/ASME standards for buttweld fittings manufactured by FLO-MAC.

A/SA403	Stainless Steels	A/SA815	Ferritic/Austenitic/Martensitic Steels
B/SB366	Nickel Alloys	B/SB363	Titanium Alloys
B/SB361	Aluminum Alloys	B/SB653	Zirconium

FITTINGS	SIZES	SCHEDULE
LR 90 & LR 45	1/2″ – 8″	10 – XXH
LR 180	1/2 – 6″	10 – XXH
SR 45, SR 90, & SR 180	1″ – 8″	10 – XXH
CAPS	1/2″ -12″	10 – XXH
CONCENTRIC & ECCENTRIC	1/2″ – 8″	10 – XXH
TEES & CROSSES (SML) & (W)	1/2″ – 14″	10 – XXH
LATERALS (W)	1-1/2″ – 8″	10 – 80
MULTIPLE EXTRUDED OUTLETS / HEADERS	1/2″ – 24″	10-160

WP-S	SEAMLESS	B16.9
WP-W	WELDED	B16.9	X-Ray of Our Fabricated Weld
WP-WX	WELDED	B16.9	X-Ray of Our Fabricated Weld & Material Weld
CR	WELDED	B16.9	Radiography Not Required

Special Configurations

In addition to our normal catalog of buttweld fittings, FLO-MAC offers numerous capabilities in various sizes, configurations, return bends, multiple pulled or extruded outlets.

If you have a need for special configurations, contact us today for more information.

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Why Choose FLO-MAC?

Made in the USA

FLO-MAC Buttweld Fittings are manufactured in Los Angeles, California in accordance with MSS-SP43, ASME B16.9 and other governing specifications as they apply to the various alloys and materials involved.

Our goal is for our clients to be assured that each piece is made to the highest industry standards.

The Facility

We set the standard for quality and reliability

Our 75,000 square foot manufacturing facility is located in Los Angeles, California and houses our manufacturing equipment, heat treating, warehouse, inspection, fulfillment and offices.

FLO-MAC has the capability of manufacturing and processing operations in-house to facilitate a smooth and efficient production flow, thus aiding our quality and customer satisfaction.