Allied vs. Galvanized (Hot-Dipped) Schedule 40 Pipe

• Allied galvanized tubing products resist rust and corrosion at least 45% longer than hot-dipped galvanized schedule 40 pipe. (See salt spray test results).

• Hot-dipped products, like pre-galvanized products, generally have a higher lead content than Allied's products which are galvanized with "four-nine" zinc, which is 99.99% pure.

• Gatorshield tubing (50 ksi yield strength) is significantly stronger (66%) gauge for gauge, yet is at least 31% lighter (OD/OD) than galvanized schedule 40 pipe. Less weight means easier handling and installation in the field, particularly in areas where material handling equipment is unavailable or the site is inaccessible.

• Allied's in-line galvanizing process, which involves heating and quick cooling of the tube, enhances the mechanical properties of the finished product. 50/55 Gatorshield delivers a minimum 50,000 psi yield strength, and greater impact resistance than hot-dipped schedule 40 pipe.

• 50/55 Gatorshield can be easily fabricated...bent, swaged, wall-to-wall flattened...without deformation of the triple layer of protection. Galvanized schedule 40 tends to flake and chip during fabrication.

• Unlike Allied's uniform exterior and interior coatings, the pipe hot-dipping process provides an inconsistent, rough surface finish that can result in poor coating coverage, as well as an inferior aesthetic appearance.

• 50/55 Gatorshield is available in a wide range of lengths to meet specific customer requirements. In contrast, galvanized Schedule 40 pipe is typically sold only in 21 foot standard lengths.
• Allied's Flo-Coat process is safer and better for the environment. Increased Federal and State EPA issues are restrictive to the hot-dipped galvanizing process. These restrictions will make hot-dip processes cost prohibitive, and may result in a decline of processors and cause availability problems.