ข้อต่อตรงลด-พีพีอาร์

25×20 (3/4"x1/2"), 32×20 (1"x1/2"), 32×25 (1"x3/4"), 40×20 (1 1/4"x1/2"), 40×25 (1 1/4"x3/4"), 40×32 (1 1/4"x1"), 50×20 (1 1/2"x1/2"), 50×25 (1 1/2"x3/4"), 50×32 (1 1/2"x1"), 50×40 (1 1/2"x1 1/4"), 63×25 (2"x3/4"), 63×32 (2"x1"), 63×40 (2"x1 1/4"), 63×50 (2"x1 1/2"), 75×32 (2 1/2"x1"), 75×40 (2 1/2"x1 1/4"), 75×50 (2 1/2"x1 1/2"), 75×63 (2 1/2"x2"), 90×40 (3"x1 1/4"), 90×50 (3"x1 1/2"), 90×63 (3"x2"), 90×75 (3"x2 1/2"), 110×50 (4"x1 1/2"), 110×63 (4"x2"), 110×75 (4"x2 1/2"), 110×90 (4"x3"), 160×110 (6"x4")