Carbon steel flange, the body material is carbon steel flange or end flange connection. Common material for casting carbon steel grade WCB, forging A105, or Q235B, 10#, #20 steel, 16 manganese, steel, Q345B, such as 45.
Usually to prevent rust on the surface of the flange plating (Huang Xin, white zinc, etc.), or brush rust proof oil and spray paint treatment. The production process includes forging, casting, plate rolling, plate cutting and so on.
Among them, the forging price is the highest, the plate product is second, the casting product is the lowest. In terms of quality, the best forging, roll second, casting the most of the third. But the forging diameter is generally small. Standard: Mechanical Department standard JB/T81-94
The Ministry of chemical industry standard HG2059397 / HG20617-97
National standard GB/T9119-2000
Marine Standard CB M1001-81
Thermal power standard D-GD87-1101
National building standard S02403
European standard EN14420-2
The United States flange drilling standard ANSI B 16.5 we will at a reasonable price, timely service, strict quality, integrity and responsible attitude, to provide customers with first-class products