Have you tried a pipe supplier, they can usually help with prices
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
Hi Asade, you should specify more details: Grade, Qty, Wall Thickness, PSL 1 or PSL 2, Length(Usually 6m or 12m,etc), Painting(black, epoxy, FBE, Galv. etc). Try Alibaba is a good way to source in China since the quality or technology related to produce those pipes are sophisticated. LittleInch's price is a bit higher ^!^. Take 4" SCH40 API 5L Gr.B for example, you can get an average price of approx. USD450 / tonne (FOB Tianjin). Other grades to X70 generally will be no higher than USD700 / tonne. You can calculate the price per meter yourself by using the unit weight specified in ASME B36.10. Be aware that although many may hold a large stock of PSL 1 pipes, PSL 2 might require a large volume (say more than 60 MT) to manufacture.