Tubes for industrial use made of plastic, elastomer, or rubber; tubes for industrial use made of two or three layers of plastic, elastomer, and/or rubber; sheets for industrial use made of plastic, elastomer, or rubber

Tubes for industrial use made of plastic, elastomer, or rubber; tubes for industrial use made of two or three layers of plastic, elastomer, and/or rubber; sheets for industrial use made of plastic, elastomer, or rubber