I have two record types for an order object. for sample order record type i want to hide the edit and delete permissions for all users. pls help me to hide those buttons
I don't think you can do that for Order Products since they inherit those permissions from the Order. So you'd have to turn off edit/delete permissions for the Order in order to do that.
However, as an alternative, you could create a custom lighting component to display Order Products (without the actions), and replace this related list with that new component on the lightning record page.