WP loop to get related grouped products only

This code snippet can be used to get related grouped products only in single product page.

<?php
$pTerms = get_the_terms( $product->ID , 'product_cat', 'string');
$pTermsIds = wp_list_pluck($pTerms,'term_id');
$args = array(
	'post_type' => 'product',
	'post_parent' => 0,
	'post_status' => 'publish',
	'posts_per_page' => -1,
	'tax_query' => array(
	'relation' => 'AND',
	array(
		'taxonomy' => 'product_cat',
		'field' => 'id',
		'terms' => $pTermsIds,
		'include_children' => false
	),
	array(
		'taxonomy' => 'product_type',
		'field'    => 'slug',
		'terms'    => 'grouped', 
	),
),
'post__not_in' => array(get_the_ID()),
);
$loop = new WP_Query($args);
if ( $loop->have_posts() ) : ?>
<div class="related-product-container">
	<?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
	<div class="related-product">
	<div class="related-product-img">
	<?php echo get_the_post_thumbnail(); ?>
	</div>
	<div class="related-product-body">
	<h3 class="related-product-title"><a href="<?php echo get_permalink(); ?>"><?php echo get_the_title(); ?></a></h3>
	</div>
	</div>
	<?php endwhile; ?>
</div>
<?php	endif;
		wp_reset_postdata();
?>