wp loop custom post type

<?php
$loop = new WP_Query(
    array(
        'post_type' => 'yourposttypehere' // This is the name of your post type - change this as required,
        'posts_per_page' => 50 // This is the amount of posts per page you want to show
    )
);
while ( $loop->have_posts() ) : $loop->the_post();
// The content you want to loop goes in here:
?>
 
<div class="col-sm-4">
My column content
</div>
 
<?php endwhile;
wp_reset_postdata();
?>