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2. D-ring - Wikipedia

   en.wikipedia.org/wiki/D-ring

   A D-ring may be used at the end of a leather or fabric strap, or may be secured to a surface with a metal or fabric strap; though there are D-rings with a middle body designed to be welded to steel. Ideally, a D-ring swings freely after it has been secured. D-rings may vary in composition, geometry, weight, finish and load (rated) capacity ...

3. Fillet weld - Wikipedia

   en.wikipedia.org/wiki/Fillet_weld

   Along with a triangle, there will usually be a size for the weld for example (1 ⁄ 8 ”x 3 ⁄ 8 ”) to the left of the triangle. This means that the vertical leg of the weld is to be 1 ⁄ 8 ” whereas the horizontal leg is to 3 ⁄ 8 ”. To the right of the triangle, there will be a measurement of exactly how long the weld is supposed to ...

4. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   The typical rings are fabricated from rolled steel plate, angles or tee's welded together to create the ring cross section required. Rings are fabricated from any combination of plate, tee or W shape that the shop can roll. Rings are usually mild carbon steel, ASTM A36 plate, or equivalent.

5. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Gaskets are mechanical seals, usually ring-shaped, which seal flange joints. [3] Gaskets vary by construction, materials and features. Commonly used gaskets are non-metallic (ASME B 16.21), spiral-wound (ASME B 16.20) and ring-joint (ASME B 16.20). Non-metallic gaskets are used with flat- or raised-face flanges.

6. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   The heat-affected zone (HAZ) is a ring surrounding the weld in which the temperature of the welding process, combined with the stresses of uneven heating and cooling, alters the heat-treatment properties of the alloy. The effects of welding on the material surrounding the weld can be detrimental—depending on the materials used and the heat ...

7. Nipple (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Nipple_(plumbing)

   A chase nipple has male threads on one end only. The other end is a hexagon. The chase nipple passes through the knockouts of two boxes, and is secured by an internally threaded ring called a lock nut. [1] [2] Chase-Shawmut Company, of Boston, is the company which first produced chase nipples. [3]

8. List of welding codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints ISO 17660-2: Welding - Welding of reinforcing steel - Part 1: Non-load bearing welded joints ISO/TR 20172: Welding — Grouping systems for materials — European materials ISO/TR 20173: Welding — Grouping systems for materials — American materials ISO/TR 20174

9. Rotary friction welding - Wikipedia

   en.wikipedia.org/wiki/Rotary_friction_welding

   Typically one welded element is rotated relative to the other and to the forge (pressed down by axial force). The heating of the material is caused by friction work and creates a permanent connection. In this method, the materials to be welded can be the same, dissimilar, composite [1] or non-metallic materials. Friction welding methods of are ...