Is there a big or small head to connect metric pipe and imperial pipe?
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How to connect DN50, φ57×3.5 metric seamless steel pipe and DN40, φ48.3×3.5 inch pipe? Are there any such elbows or big and small heads? Which standard?
Standard big and small heads are not available, but can be specially customized if necessary.
There is definitely no standard size head. Customize directly with the manufacturer.
There is no standard one, so make one yourself.
Needs to be customized. I encountered it once before. The pipe on one side was 529X10 and the pipe on the other side was 508X9.5. Although they were both DN500, I couldn't connect them. I was depressed then
If carbon steel is made on-site, stainless steel and alloy steel are best made by manufacturers.
If carbon steel is made on-site, stainless steel and alloy steel are best made by manufacturers.
Considering that your wall thickness is relatively thick, you can use standard metric 50×40 big and small heads and weld both ends. For DN40 pipes with a wall thickness of 3.5mm, direct welding is basically no problem.
Just process one yourself, there are no standard parts.
It can be customized, that is, 50 to 40, with the same thickness.
This is a non-standard pipe fitting and can be customized at the manufacturer.
When necessary, non-standard specifications for such large and small heads are proposed and ordered separately.
There is a solution for connecting metric pipes and imperial pipes: First, use the large and small heads DN50×40, and the pipes will become DN40. The metric pipes are welded to the HG20592 European A series flanges, and the British pipes are welded to the HG20592 European B series flanges, so that two flanges of the same diameter can be connected with bolts.