Can I not allow the factory to rotate?

[sdgmlj]

I made a factory. I just want it to enter the liquid from above, but when I press "R", it has four rest assured, but I only want one direction. What should I do?

fluid_boxes = t_fluid_boxes()
local function t_pipe_picture()
return
{
filename = "__base__/graphics/entity/pipe-covers/hr-pipe-cover-north.png",
priority = "extra-high",
width = 128,
height = 128,
shift = util.by_pixel(0, 0),
scale = 0.5,
}
end

[Klonan]

You can set an entity prototype flag:
https://wiki.factorio.com/Types/EntityP ... tatable.22

[sdgmlj]

You can set an entity prototype flag:
https://wiki.factorio.com/Types/EntityP ... tatable.22

Thank you. Problem solved