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7. In weld overlay, do I need a single layer or a double layer weld overlay?
This is, of course, your decision. Usually, a double layer weld overlay is requested due to the chemistry requirements from the client. With all weld overlay methods, there is dilution. Controlling that dilution can determine if you need a single or double layer weld overlay. Please refer to our "Weld Overlay" brochure. 8. How thick is your cladding? This is determined by the client. However, most applications require 3mm or .125". If you are thinking about a thicker corrosion barrier, you should consider a higher alloy instead. 9. How are the longitudinal welds made for pipe and pipe fittings? KLAD utilizes a few different methods. One method would be similar to any other longitudinal welded pipe--bevel, form and weld. Another method is more involved. The plate is edge prepped, beveled and formed. The carbon steel is welded from the outside and the cladding is restored along the weld seam via weld overlay from the inside. This is called a "backclad" weld. The method you need will depend on the conditions and temperature of your application and other design requirements. 10. How are the girth welds produced? They are similar to the longitudinal welds. Girth welds less than 24" diameter are made with a solid alloy. For diameters 24" and larger, a backclad weld can be made. |
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