Albina is currently bending:
259 lengths x 20 ft of 3/4″ OD X .049″ WALL T304 S/S.
279 lengths x 33 ft of 1″ OD X .049″ WALL ASTM B338 GRADE 7 SMLS
858 lengths x 30 ft of 1″ OD X .065″ WALL Zr702
For these heat exchanger “u-tube” projects we bend to various radii configurations and all bends are at 180°. After bending, we always trim both ends of the bend, deburr the ends after trimming, wash the ID of the tubing and securely package the bent tubes in custom made wooden crates. All of the bends are bent and checked to RDB-2.31 and ASME Section II-B, SB-163, S1.2.3 standards for wall thinning and ovailty. If high quality bends that won’t fail are required, industrial companies know to come to Albina. Do U? See some U-Tube bends below.
Tight Radii Boxed Steel U Tubes
Steel U Tubes Packaged in Custom Wooden Crate
Close Up of Bent Steel U-Tubes
Albina is much more than just a structural bending facility. We service ALL industries that might require bent steel.
Recently Albina was involved with a large industrial application where we orovided Cargo Heating Pipe Coils for tanks in barges.
We were responsible for bending, trimming and washing each of the 488 lengths x 40 ft 2″ SCH40 SA106B SMLS to net 880 pcs. All bends were made to a 6” center-line-radius and our quality control department had to 100% QC parts to make sure the backwall thinning of the material was not below .079” and that ovality of the material was minimized.
After processing the first phase of this project the customer immediately placed 3 more releases as they were pleased with the quality, fair pricing, communication and customer service offered by Albina.
While we would prefer a bridge to be constructed of mostly curved steel, steel can still add value in the construction of a concrete bridge. Post-tensioning is a form of “prestressing”, meaning that the steel is stressed (pulled or tensioned) before the concrete has to support the service loads. A typical steel strand used for post-tensioning has a diameter of 15.7mm and a tensile strength around four times higher than an average non-prestressed piece of rebar. Albina completed a recent project consisting of 300,000# of 3-1/2″-5″ OD pipe bent, cut, trimmed, weld marked and galvanized for thousands of pieces for a post tensioning piping (conduit) for a local bridge project. Our bent steel is then placed in a sheath or duct. This allows it to move as necessary when the tensioning force is applied after the concrete cures. The steel stretches as it is tensioned and it is locked into place, thus maintaining the force in the strand for the life of the structure.
Please reference the following article written by BBR VT International LTD. to learn more about the benefits of post-tensioning, the different types of post-tensioning and how it is installed. You can also reference concretenetwork.com or the Post Tensioning Institute for more information.