Help identify the supplier of this wagon load - pipes

[resin001]

I am trying to source some more of these to fit in a rake of Parkside OO gauge pipe wagons. This set was from my late brothers collection -  the pipes are 70 mm long by 7 mm diameter and are metal

( they are magnetic ! ) . I have tried the common suppliers on the web but have had no joy so far - note my brother would never make anything apart from Metcalfe card buildings so I can strongly assume they were purchased as shown in the picture. I can make my own from brass tube but would prefer a RTR option in this case .

[Dungrange]

I don't know for sure, but they look a bit like the loads that were made by Duha.  I don't know if they are still available in the UK, but they were in the past: places like Hattons stocked them.  However, I can't see that particular load in their current range (the ones near the bottom of the page as closest.

 

https://www.duha-modely.cz/en/steel-and-their-products.html