go to www.roncoplastics.com .... you might find a 'stock' tank that may
fit from there literally hundreds tanks in inventory.

Also consider a HDPE lined GRP tank from a specialty fabricator. There
has been quite a lot of advances in prebonding HDPE to fiberglass
sheeting, the fabricator then plastic welds the joints and spark tests
them for accuracy, then reinforces the backing joint surfaces with
additional GRP -- this method of HDPE construction is starting to show
up in the high pure chem. industry with 'reasonable' results.

In article , Marc
wrote:

I'm looking for a custom fabricator of HDPE Poly for a water tank.
Anyone have any recommendations? Preferably in the NE, but nationwide
is ok. Thanks.