If you are on subscription for SW you can log on to SW and there is a secton for routing resources where you can download a heap of piping library parts, including a small selection of DIN.
Otherwise, if your pipe is CuNiFe (copper/nickle/iron) to the DIN standards then you should try
as their product catalogue is very detailed. If you are after flanges you can download some great info (ANSI & DIN) from Neumira (a spanish flange manufacturer). I would be interested if any of our European friends can point me to a similar sites for steel piping and fittings.