The AWH pipe connections are made out of different resistive materials, for various quality, hygiene and traceability requests, compliant with WAZ 3.1 DIN EN 10204, optionally with 3.1 AD2000-W2, if requested. They include various union parts, DIN 11851 and DIN/ISO and DIN/inch, female and male connections and fittings, rotating union parts, hose union parts, bellows, SMS, IDF,RJT and DS unions, clamp connections, butterfly valve flange connectiosn, neumo-flange connections, loose flanges and welding necks etc. These parts can be made from different materials, EPDM, NPR, silicone or PTFE, depending on the need.