There are many sources for plumbing supplies. You can either go to a store for them or look on your computer. You can check out Home Depot, Lowe's, or Menard's.
If you are in need of commercial plumbing supplies immediately, you might check with local "big box" stores such as Home Depot and Lowe's. They will often have the supplies needed and many plumbers who need something in a hurry go there. However, to get the best price, you might need to go to an actual plumbing supply store which often sells wholesale, therefore might not sell to an individual.
Acorn, Alisons, American Standard, Kohler, Moen, and Zurn produce commercial plumbing supplies. Several dozen plumbing companies offer commercial products.
The largest selection of plumbing supplies on the internet can be found at the award-winning www.plumbingsupply.com. Besides their impressive stock, they also provide interesting facts, fun items, plumbing history and more.
There are many suppliers of commercial plumbing supplies in the Greater Toronto area. imechsupply.com is one and irvingsplumbing.com is another. If you are looking for a plumber, you can call rotorooter.
Most home improvement stores will have plumbing supplies that are not as expensive as new supplies. If the store has ordered more than what they thought they would need, or an item has been discontinued, they will discount the plumbing supplies to the public. This could mean big savings if you are in need of doing some plumbing work in your home. Home builders can save money by purchasing discount supplies as well, thereby passing on the savings to the customer.
Home improvement stores, such as Menards, Home Depot, and Lowe's, provide copper plumbing supplies to the public. You can expect to pay more for the copper supplies, but they are generally more durable.
Yellow pages.
Most plumbers do not personally sell commercial plumbing supplies, but the company they work for might. Your plumber might be able to tell you where he gets his supplies, so you may be able to use him as a source of information.
You can go to the website of national stores like walmart, menards, lowes, and ace hardware. I would also try going to www.bizrate.com/plumbing-supplies/buy-kitchen-sink
PVC is commonly used in plumbing
You can buy galvanized pipe for your plumbing project at hardware stores, home improvement stores, or online retailers that specialize in plumbing supplies.