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(916) 568-2363  ·  info@upstreameng.com

Sacramento, California · Est. 1995

PrecisionTube & PipeBending

Upstream Engineering is a custom tube/pipe fabricator specializing in Mandrel and Rotary Draw Bending — from prototype to high-volume production. Serving aerospace, automotive, architectural, and industrial sectors.

Our Bending Services Get a Quote
Precision tube bending

CNC Rotary Draw Bending · 0.25″ – 4.00″ diameter

Mandrel Bending◆ Rotary Draw Bending◆ CNC Precision◆ End Forming◆ TIG & MIG Welding◆ Polishing◆ Cold Sawing◆ Prototype to Production◆ In-House Engineering◆ Mandrel Bending◆ Rotary Draw Bending◆ CNC Precision◆ End Forming◆ TIG & MIG Welding◆ Polishing◆ Cold Sawing◆ Prototype to Production◆ In-House Engineering◆

What We Do

Custom Fabrication, Built to Spec

Upstream Engineering is a custom tube/pipe fabricator with our major emphasis on precision bending. We specialize in Mandrel bending, or more precisely called Rotary Draw Bending.

Our bending capacity is from 0.250″ to 4.000″ diameter tubing and 1.000″ to 3.000″ pipe. All of our bending machines are fully CNC (Computer Numerically Controlled) to assure the highest precision and quality.

We can also provide numerous secondary operations such as trimming, deburring, bead rolling, flaring, swaging, slotting, welding & polishing.

Bending Other Capabilities
Tube bending
1995
Founded
35+
Years Experience
20K
Sq. Ft. Facility
4″
Max Tube Diameter

Industries We Serve

Precision Parts for Demanding Applications

Aerospace & Aviation

High-precision aluminum, stainless, inconel, and titanium tube fabrication for demanding flight applications.

Automotive

Exhaust systems, hydraulic assemblies, and structural components for automotive manufacturers and custom builders.

Architectural

Handrail systems, decorative structures, and custom forms fabricated to precise specifications for architectural projects.

Agricultural Equipment

Durable tube and pipe assemblies built to withstand demanding field conditions.

Robotics & Industrial

Custom hydraulic and pneumatic tube assemblies for automated systems and industrial machinery.

Medical & Specialty

Swimming pool systems, undersea exploration vehicles, radiator components, and medical equipment providers.

Core Service

Tube & Pipe Bending — From Design & Prototype to Production

We specialize in Mandrel bending, or more precisely called Rotary Draw Bending. This process uses an internal mandrel to support the tube/pipe while bending in order to prevent flattening and wrinkling. This is especially necessary for bending thin wall materials on a tight bend radius.

We have an extensive tooling inventory for bending from 0.25″ to 4.000″ outside diameter tubing and 1.000″ to 3.000″ pipe.

For each material diameter we offer various CLR (centerline bend radius) tooling from as little as 1D (CLR = 1 × tube diameter) up to 5D.

Tube Bending Diagram — Wall Thickness, CLR, Bend Angle, Outside Diameter

Wall Thickness  ·  CLR  ·  Bend Angle  ·  Outside Diameter

From exhaust system components to hydraulic tube assemblies, or from handles to handrails, we will help you achieve your manufacturing requirements. We welcome prototype work as well as volume production, and will assist you with the design process as well.

Square tube U-bend Polished U-bend tubes S-bend exhaust pipes Y-junction tube fabrication 180-degree U-bend tube

Extensive Tooling Inventory

Wide range of tooling across diameters and CLR ratios to accommodate virtually any project geometry.

Prototype Work

We welcome one-off prototypes and short runs — supporting your design team from sketch to first article.

Volume Production

CNC-controlled bending machines ensure repeatable precision for high-volume manufacturing runs.

Full Service Fabrication

Additional Services for a Variety of Materials

Secondary Operations

◆End Forming
◆Flaring
◆Expanding
◆Swaging
◆Bead Rolling
◆Slotting
◆TIG & MIG Welding
◆Cold Sawing

In-House Engineering

◆Reverse Engineering
◆From Drawing to Product
◆Prototype to Production
◆Part Design

Materials We Work With

◆Mild Steel
◆Stainless Steel
◆Alloy Steel
◆Aluminized Steel
◆Inconel
◆Aluminum
◆Titanium
◆Copper
◆Brass

Our Work

Photo Gallery

Below is a selection of fabrication samples from our facility. Contact us to discuss how we can fabricate components for your application.

End forming and swaging samples End forming and swaging samples Flared tube end forming Swaged and expanded tube components Mixed fabrication samples Various tube end forming parts Tube fabrication components Precision bent tube sample Aluminized steel tube components Aluminized steel tube components Multi-bend aluminum tube Complex multi-bend tube S-bend tube fabrication Titanium tube — precision bend Titanium bent tube hook components Titanium S-bend hook component Aluminum small-diameter bent tubes Cold saw trimmed tube — cope cut end Cold saw trimmed tube — angled cut Cold saw trimmed tube — angled cut detail Stainless steel triangle tube frame Stainless steel triangle frame with bracket Stainless steel triangle frame assembly Multi-bend large aluminum tube Complex multi-bend aluminum tube

Who We Are

Precision Tube & Pipe Fabrication Since 1995

Upstream Engineering has been producing quality products since 1995. With over 35 years of engineering experience, Upstream Engineering has the capability and is committed to meeting our customers' tube & pipe fabrication needs.

We service an array of customers at our 20,000 sq.ft. facility, including aircraft, automotive and motorcycle exhaust manufacturers — to swimming pool designers, radiator manufacturers, handrail crafters, agricultural equipment manufacturers, undersea exploration vehicles, and medical equipment providers.

Located in the heart of California's Central Valley in Sacramento, we combine deep technical expertise with hands-on craftsmanship to deliver precision components on time, every time.

1995
Founded
35+
Yrs Experience
20K
Sq. Ft. Facility
8+
Industries Served
Upstream Engineering facility

Reach Out

Contact Upstream Engineering

Ready to discuss your tube or pipe fabrication project? Our team in Sacramento is here to help from initial design through production.

◎
Address
4661 Pell Drive #18
Sacramento, CA 95838
◎
Phone
(916) 568-2363
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Fax
(916) 568-2366
◎
◎
Web
www.upstreameng.com

Common Questions

Frequently Asked Questions

What is Mandrel / Rotary Draw Bending?

Rotary Draw Bending uses an internal mandrel to support the tube or pipe during the bending process. This prevents the tube wall from collapsing, flattening, or wrinkling — which is especially critical for thin-wall materials and tight bend radii.

What tube and pipe diameters can you handle?

We can bend tubing from 0.250″ to 4.000″ outside diameter, and pipe from 1.000″ to 3.000″. Contact us for materials or sizes outside this range.

What materials do you work with?

We work with aluminum, mild steel, stainless steel, alloy steel, inconel, titanium, copper, and brass. Our in-house engineering team can advise on material selection for your application.

Do you accept prototype orders?

Absolutely. We welcome prototype work as well as volume production, and will assist with the design process. From a single prototype to full production runs, we've got you covered.

What secondary operations do you offer?

In addition to bending, we offer end forming, flaring, expanding, swaging, bead rolling, slotting, TIG & MIG welding, polishing, cold sawing, and in-house engineering including reverse engineering and part design.

How do I get a quote?

Contact us by phone at (916) 568-2363, by email at info@upstreameng.com, or use the contact form on our Contact page. Please include material, diameter, wall thickness, bend radii, and quantity if known.