What's the specification for flanges with outer diameter 160?
Flanges (Flange) are also called flanges or flanges. The flange is the part that connects the pipe to the pipe and the valve and is connected to the end of the pipe. The flange is lined with bolts to secure the two flanges. Gaskets for gaskets between flanges. Flanges, threaded connections (wire connections), flanges and welded flanges and clamp flanges.
The old labels JB81-59, 10kg-25kg, DN50, 2.5kg-6kg and DN65 are all outer diameter 160
