1: The seamless pipe is not too thick, and the diameter is below 30, so it can be cold-bent, that is, it can be directly bent into the required shape with a pipe bender;
2. The nozzle is easy to crack during cold bending, and can be hot bent, that is, it can be directly bent when heated to about 500℃;
3: The diameter is relatively large, about 30 to 80. It is best to fill dry sand first, and then hot bend;
4. The diameter is too large, and the pipe wall is thin. It is suggested to cut and weld. It can be cut into two 45 angles, welded in turn, and then paired into a "shrimp bend" to make the elbow shape like a prawn shell, section by section. The former has a simple structure, but it has a large resistance to fluid, while the latter has a small resistance to fluid.
Extended data:
Iron control engineering:
1, make a fence
Firstly, the iron pipe is made into a cuboid with a square cross section of 4 square centimeters, and the length of the cuboid is 1 meter, thus making 10 cuboids. The specific number can be determined according to the area or length you need to enclose.
Then drill two holes in the symmetrical centers of these cuboids, make all cuboids in turn, and fix all cuboids with relatively strong ropes or other materials passing through the middle.
If you want to keep the distance between cuboids, you can tie a knot on the rope to separate two adjacent cuboids. Finally, a base is made and all cuboids are welded to the base, thus completing a fence.
If you don't think it looks good, you can wrap a nice sticker outside the cuboid, spray paint in your favorite color, or design DIY patterns yourself to make the fence more beautiful. In this way, the fence will not destroy the overall feeling of the room, but also add a lot of color to the landscape of the room.
Step 2 make a subwoofer
Select an iron pipe with a diameter of 370 mm and a thickness of 8 mm, place the iron pipe vertically, drill a hole with a diameter of 100 mm above the iron pipe, and place the reverse hole.
Then make a wooden base with a diameter greater than 370 mm, put an iron pipe above the base, put a woofer in the iron pipe on the base, and set nails around it according to its specific size to prevent sliding.
Finally, a blind plate is placed on the iron pipe. The diameter of the blind plate should be the same as that of the iron pipe, but there may be errors in actual operation.
References:
Baidu encyclopedia-elbow