1. Machinery Safety Directive 89/392/EEC,1989
2. Metal Pipes and Fittings - Stainless Steel Bends and Tees for the Food Industry (ISO 2851:1973),1973
3. Metal Pipes and Fittings - Stainless Steel Clamp Liners with Gaskets for the Food Industry (ISO 2852:1974),1974
4. Metal Pipes and Fittings - Stainless Steel Screwed Couplings for the Food Industry (ISO 2853:1976),1976
5. Metal Pipes and Fittings - Stainless Steel Tubes for the Food Industry (ISO 2851 :1980),1980