Product Name: ASTM D1785 UPVC Pipe, UV-Resistant, Bell End
Type: UPVC Pipe, UV-Resistant
Standard: ASTM D1785
Material: UPVC
Size Range: 3/4–4 Inch
Wall Thickness: SCH 80
Connection End: Bell End
Applications: Electrical Conduits, Communication Lines

Source: https://www.landee.cn/astm-d1785-upvc-pipe-3-4-4-inch-sch-80-uv-resistant-be.html