Our dock pipe is 1 1/4" durable galvanized steel well pipe, not conduit used by some of our competitors.
We have standard lengths of dock pipe cut and ready to go in stock. 2', 3', 4', 5', 6', 7', and 8' @ $2.95 per foot.
The ID of our pipe is 1 1/4" and the OD is 1 5/8".