Premium Only Content
Custom 5053 5083 schedule 40 aluminum tube 7075 large diameter aluminum pipe
Structural and seamless tube are both extruded. That means a billet of material is forced through a hole in a die shaped to form the two dimensional cross-section you need. (We’ve called it the “toothpaste process” in the past and compared it to decorating a cake.)
Sometimes you want that extruded material to have a hole down the center. The simplest example is circular tube or pipe. for an explanation of the difference. Porthole and seamless are different ways of forming that hollow internal section.
In porthole, metal is forced around a shape that matches the hollow section you want to extrude. Physics being what it is, the tooling needs ribs to hold that shape in place, and the metal has to flow around them. That separates the metal as it extrudes, so a second die forces those sections back together. At the micro-structure level, the surfaces weld to each other, which means there’s a seam.
As the name suggests, seamless extruded tubes avoid this. The difference is that a forming mandrel is inserted into the billet of material from the rear, and pushed thorough until it’s very close to the opening in the die. The material flows through the gap, emerging with both internal and external dimensions fixed and without any seams.
-
4:29:06
MissesMaam
9 hours agoISSA RUMBLE TAKEOVER BABY 💚✨
25.6K5 -
1:51:52
Kim Iversen
11 hours agoUS-Backed Al-Qaeda Takes Over Syria: Israel the Biggest Beneficiary — Were They Responsible?
108K116 -
1:54:02
Fresh and Fit
9 hours agoMoney Monday Call-In Show
117K14 -
28:33
Stephen Gardner
8 hours ago🔥Joe Biden SHOCKS the DNC...Then burns it down on way out!
100K153 -
1:04:33
JustPearlyThings
11 hours agoThe MISLEADING Tactics of the Feminist Agenda | Pearl Daily
49.5K26 -
1:26:57
Flyover Conservatives
1 day agoLara Logan’s Explosive Take: Open Borders. The Future for J6 Hostages. The Fallout from Hunter Biden’s Pardon. | FOC Show
51.9K26 -
1:27:53
Adam Does Movies
13 hours ago $11.62 earnedIt's Kraven Time! First 8 Minutes Revealed + Moana 2's Huge Box Office! - LIVE
58.2K2 -
7:20:47
-
1:05:40
Donald Trump Jr.
15 hours agoAmerica to the FBI: We Only Take Kash, Live with Mike Davis | TRIGGERED Ep.195
170K180 -
2:23:13
WeAreChange
11 hours agoBIDEN 180: Crime Family Coverup Exposed By Joe’s Pardon Of Hunter!
78.6K41