6906 Ceramic Pipes, Conduits, Guttering and Pipe Fittings (Excl. of Siliceous Fossil Meals or Similar Siliceous Earths, Refractory Ceramic Goods, Chimney Liners, Pipes Specifically Manufactured for Laboratories, Insulating Tubing and Fittings and Other Piping for Electrotechnical Purposes)

6906 (01/1988-..) Ceramic Pipes, Conduits, Guttering and Pipe Fittings (Excl. of Siliceous Fossil Meals or Similar Siliceous Earths, Refractory Ceramic Goods, Chimney Liners, Pipes Specifically Manufactured for Laboratories, Insulating Tubing and Fittings and Other Piping for Electrotechnical Purposes) 69060000 (01/1988-..) Ceramic Pipes, Conduits, Guttering and Pipe Fittings (Excl. of Siliceous Fossil Meals or Similar Siliceous Earths, Refractory Ceramic Goods, Chimney Liners, Pipes Specifically Manufactured for Laboratories, Insulating Tubing and Fittings and Other Piping for Electrotechnical Purposes)