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German standard S0 flange
German standard S0 flange

German standard S0 flange

German standard S0 flange production process: forging, casting, plate rolling system; German standard S0 flange...
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German standard S0 flange production process: forging, casting, plate rolling system; German standard S0 flange connection form single welded, double nut connection.

German standard S0 flange features beautiful appearance, smooth surface, acid and alkali resistance, corrosion resistance, texture performance.

Production process oxygen furnace opening, integral forging or finished forging cutting molding.

Technical requirements of German standard S0 flange:

1. The level and technical requirements of butt welding flange shall meet the corresponding requirements of jb4726-4728. 1, the nominal pressure PN 0.25 MP 1.0 MPa carbon steel and austenitic stainless steel forgings allowed the use of level Ⅰ forgings. 2, in addition to the following provisions, nominal pressure of PN 1.6 MPa to 6.3 MPa forgings shall conform to Ⅱ level or above level Ⅱ forgings levels. 3, conform to one of the following situations, should accord with the requirement of Ⅲ and forgings: (1) the nominal pressure PN acuity 10.0 MPa flange forging; (2) nominal pressure; 4.0MPa chrome molybdenum steel forgings; (3) nominal pressure; 1.6MPa ferritic steel forgings with operating temperature ≤-20 ℃.

Welding flange is generally made by forging or forging rolling process. When using steel plate or section steel manufacturing, to meet the following requirements: 1, welding flange should be ultrasonic testing, no layered defects; 2, should be cut along the rolling direction of steel into strips, through bending butt welding into a ring, and the surface of steel to form a ring of cylinder. The steel plate shall not be directly machined into butt welding flange with neck; 3. Full penetration weld shall be adopted for the butt weld of the ring; 4. The butt welding seam of the ring shall be subjected to post-welding heat treatment and shall be subject to 100% radiographic or ultrasonic inspection, and the radiographic inspection shall meet the grade II requirements of JB4730, and the ultrasonic inspection shall meet the grade I requirements of JB4730.

Three, welding flange neck lateral slope should not be greater than 7o. Welding flange in production and welding strict control of technical parameters, to ensure that the production and use of full play and value.