3.1 The internal oblique ladder pattern on the material of the equipment requirements (based on the use of media environment determined). Commonly used steel Q235-AF; when the container shell made of high-alloy steel, the inclined ladder should be the container housing the material (wall) material line.
3.2 parts machining roughness Ra ≤ 25μm, cutting-edge roughness ≤ 50μm, ladder beams around the burr are prohibited.
3.3 After soldering the internal inclined ladders shall not be warping, stepping foot welded at both ends polished smooth, inclined ladder should be stable after installation firm.
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