Array
(
    [труба 110] => Array
        (
            [1м] => 20.5
            [2м] => 22.5
            [3м] => 33.5
            [4м] => 44.5
        )

    [труба 160] => Array
        (
            [1м] => 120.5
            [2м] => 122.5
            [3м] => 133.5
            [4м] => 144.5
        )

    [труба 200] => Array
        (
            [2м] => 22.5
            [3м] => 33.5
            [4м] => 44.5
        )

)
<hr class='0'><hr class='1'>22.5<hr class='2м'>33.5<hr>44.5<hr>