welding process of hardox 400 pipe wall thickness rand(1.0,16 mm

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S355J2 steel plate rolling process is controlled rolling process. In the rolling process, the ingot rolling temperature is 1000-1050℃; in the first stage, the low-speed and large reduction rolling process is adopted, the high-temperature stage is 950-1000℃, the welding process of HARDOX 400 rolling speed is 1.6-2.0m/s, the single reduction rate is 15-20%, and the cumulative reduction rate is 40-45%, so as to ensure sufficient deformation of ingot. In the first stage, the start rolling temperature is 910-930℃, and the finish rolling temperature is ≤ 870℃.As a basic building material, steel plates are currently widely used in automobiles, shipbuilding, chemical industry, aerospace and other fields. Reasonable selection of flaw detection methods to ensure the quality of welding process of HARDOX 400 steel plates is of great significance to safe production. Common defects of steel plates are folding, inclusion, shrinkage, air bubbles, delamination and cracks. These problems can be discovered in time through flaw detection.

Seamless pipes material and specificationAPI 5L Gr.B, welding process of HARDOX 400 A106 Gr.B, ASTM A53 Gr.B, ST37.0, ST35.8, St37.2, St35.4/8,St42,St45,St52,St52.4, STP G38, STP G42, STS42STPT49STS49Sizes(mm): 0.12-2.0mm*600-1250mmWall Thickness(mm):1.2mm-40mmCertificates: API5L ISO 9001:2008 TUV SGS BV etcSurface: Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE

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