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We want to avoid spending money on a mandrel if we can. It's reassuring to hear you say no cracking should occur. We're gonna have our fingers crossed that this test piece works out. Thanks!

Sherman, Tx. An hour north of Dallas. We really can't deviate from 1.50" od x .125" wall. The largest CLR bend die we have is 4". We actually just ordered 24 ft of 6063-t52 to test on. fingers crossed... I'll look into 50XX grade. thanks.

Hello all, I am in a bit of a desperate situation. Our company has a potential huge order that requires bending aluminum tube. Like my title says, I want to know if I can make a 90° bend on ALUM 6063-T52, 1.50" OD X .125" Wall Thickness with a 4" center line radius, no mandrel? This seems to be...

Thanks for the responses. I felt like it was too convenient to work. So, the air would push it's way through the water into the hose?

Left out important detail: The water pressure I want to get to is only 525 psi.

hello all, I would like to know if filling a hose with water and then adding air on top of the water to increase pressure would work. I believe its the same theory as a air over hydraulic pump which can get 100 psi of air pressure to create 10,000 psi of oil pressure. I attached a very...

Initial load is the load required to initiate the spring to extend. The load when the spring is extended by an 1 or less would be cool too.

Already tried that one. Thanks for the response, though.

Is it possible for an extension spring to be 20 inches long while unloaded, 32 or so inches long fully extended(12" max displacement), and have an initial load of 30-40 lbs? All other properties are virtually not important. If so, where could I buy them?

Thanks buster.

Hello all, I work for a company that makes composite manhole covers and we would like to take testing in house. I have found a lot of ambiguous information on this and I am looking for a clear test procedure to satisfy the H-20, HS-20 standard. Thank you