IF IT DON'T FIT, BEND IT!
YES, WERE STOCKING AMERICA AND THE WORLD!
YES, WERE STOCKING AMERICA AND THE WORLD!
Mandrel Bending is to bend tubing without any distortions in the bend area. By the use of a mandrel inserted to the inside of the tube, the mandrel keeps the tubing inside diameter nearly round during the bend process. Other benders crush the tubing and the loss of flow area can be a minimum of 40%. Mandrel Bending keeps the flow at 96-99%.
Youtube video here: https://youtu.be/F9ygWTqOfA4
Marman flanges have been created in the 1940's by Herbert "Zeppo" Marx of the Marx Brother fame. This flange was created to be simple yet be able to handle extreme pressures up to 3000 PSI associated with liquids and is superior to vacuum volume as well. These were used during World War 2 as a fast disassembly of automobiles and aircraft. Without this ingenious assembly, the war would have certainly had a different outcome. Currently, these are used on all diesel semi-trucks across the world as well as irrigation pipes, aircraft and these have even been used on the Space Shuttle Rocket Boosters . GBE Mandrel decided to manufacture these in smaller sizes to be able to handle the light exhaust pressures from automotive uses with ease. Unlike the V-Bands, these DO NOT LEAK.
Youtube Video here: https://youtu.be/dZFC7HiNy-
What is tubing? What is piping? Aren't they the same?
Tubing is what is used on vehicles, bikes, motorcycles, fences. Everything that doesn't require alot of strength. Tubing uses outside diameter and a wall thickness which is measured in gauge. The thickness compared to pipe is usually quit thin. If your looking for 2" tubing, it will be 2" measured outside diameter.
Piping uses inside diameter and doesn't give a wall thickness per se'. Usually it is measured by schedule. It is usually used for water, sewage, drains, roll bars/cages. This is usually quite a bit thicker in material than tubing because it needs to handle more pressures inside and out. If you are looking for 2" piping, then the inside diameter is measured 2", but the outside diameter could be 3" or even 12"!
Make sure you know what your asking for!
We only bend tubing, not piping.
Don't know what tubing to use? Here are the basics:
Steel Tubing: Great for inexpensive mock-ups, prototypes and headers but you must paint, plate or ceracoat the material. Welds good with mig, tig, oxy/act. Longevity? Unpainted, 2 years. Painted, 4 years. Plated, 10 years. Ceracoated, 10 years-15 years. Recommended for headers!
Aluminized Tubing: This is what your local exhaust shop uses. Aluminum coated steel tubing that resists rusting. Welds great with mig welder with shielded gas. You must paint outside of the welds otherwise rusting will occur. Longevity, 10 years except at the welds on the inside of the tube. Great for a do it yourself exhaust system.
409 Stainless: This is where we get technical. 409 tubing is known as "exhaust tubing". IT IS MAGNETIC! It welds good with mig and better with TIG using simple argon gas and a grey tungsten. Not very polish-able, but when bent, it stays there. This is what is mainly used by the "top guys" in the exhaust filed for kits and mufflers. Perfect for ALL custom exhaust. Is magnetic, but will mainly resist rusting. Longevity, 20 years Perfect for custom exhaust systems.
304 Stainless: This material is slightly magnetic and can actually become more magnetic when heat is applied or in the mandrel bending process. 304 is a super durable material except when put to high heat. Stress cracking can occur at welds or seams. Material does NOT keep it's shape when heated. Tends to attempt to straighten out bends in heated. Perfect for coolant (anti-freeze) lines. Highly polish-able. Not great to mig weld, must use helium blend. Tig welder can make welds look great, only argon needed with grey tungsten. Can be used on headers, but material will crack over time. Better off for a not-much used show car. Longevity, 20 years.
Click on the link below to see GBE Mandrel Bending's You Tube channel. We bend tube, fabricate, exp
All of our bends have FREE shipping. Tubing is sold by the foot and has shipping due. Anything longer than 3' is considered freight and is costly. When ordering tube, we will cut up to 3 feet long to ship unless you pay for the extra shipping costs.
If you are out of the USA and need our parts, when you order and if no shipping is stated or the price is below our cost, we will send you an invoice showing how much shipping is required to send your items. When paid, we can ship same day.
Give us a call at 503.344.4149
At GBE Mandrel Bending, we understand your need for a one stop shopping experience. We make all our bends and marman flange assemblies. We have our exhaust flanges made from our specs, so that everything fits right. If your going to make your own headers, we carry everything from the flanges, flange gaskets to the tubes. Unfortunately we do not make header collectors. Other than that, we can be your main source for mandrel bends!
Local? Stop on by! We are always here to help. Open to the PUBLIC!
15600 SE For Mor Court, Suite B, Clackamas, OR 97015
Please call us between the hours of 7am-5:30pm M-F so that we can answer all your questions. Special requests, email us at: GBEMANDREL@GMAIL.COM
Did you ever want to know what Mandrel bending is and how we achieve our nice bends?
Our customers possess the right to Open-A-Return on any order received in 30 days. However, in a healthy transaction where no mistake is proved to be made by the Seller, the Buyer will be responsible for the Return Label Cost. Also, please note that in order to prevent repeat abusers of our return policy, a return on orders over 30 days old will be denied in any occasion. If we do accept any return, a 20% restocking fee will be accessed. If tax is not collected on your order, the state that you reside requires that the PURCHASER file a sales and use tax return at the end of the year. This sales and use tax return is to report all taxable purchases that were not taxed and to pay the taxes associated with those purchases. This purchase is not exempt from your states sales or use tax merely because it is made over the Internet. We do NOT collect or pay the tax for you, that is your responsibility.
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