Stainless steel pipe procurement, how should I inquire?

If you want to purchase stainless steel pipe, how should you inquire? Some friends directly ask how much is a ton of stainless steel pipes as soon as they come up, what specifications of stainless steel pipes you have not explained clearly, come up and ask the price, in fact, this is not understanding our industry, so it is easy to be pitted.
Then the correct quotation should contain these points, material, specifications and application range, for example, I want 201 stainless steel round pipe, the outer diameter is 25, the wall thickness is 0.4. The purpose is the oven bracket, the pipe mouth needs to be shrunk processing, the quantity is ten tons, what is the price? If you need to ask more than a few, be sure to make it clear with other suppliers, you follow what I said to the supplier, the price asked is called professional. If you don't understand anything, and you don't explain it clearly, pick the cheapest one to buy back, and after receiving the goods, you find that this is not the goods you want, and finally it may be a purchase with a high cost.