https://www.putzmeister.com/products/-/product-category/series/5219667/5240448/5253069/shotcrete/pipe-technology/laydown-pipes/p1ih/p1ih-hdr-400-6---125mm
https://www.putzmeister.com/products/-/product-category/series/5219667/5240448/5253069/shotcrete/pipe-technology/laydown-pipes/p1ih/p1ih-hdr-400-6---125mm