Lengh:2400mm Inner diameter:200,300,400,500,600,800etc Joint:plain,socket,rabbet(male and female) 1,Our davantages1)Good quality2)Considerate after-sale serviceOnce the product sold, we will provide free after-sale services during one year, including the maintain and accessories except vulnerable parts 3)Variable frequncy motorSave 40% power,make lower noisy, difficult to be broken and easy to ...