hi someone put , a safety feature on here had webbing on back bends to catch any blow out, does anyone remember i cant find it thanks

Brundage bone concrete pumping uses these. 

Seattle tarp makes them. Many pump companies use them.

thanks but i am in uk, i have ordered a canvas sheet will wrap that around, instead

Tarp will only rot away at some point.There was alot of testing for the blast net,well worth a e-mail.If you have ever seen the aftermath of a sweep/elbow failure you might change you mind.There's one born every minute.

many i know what your saying , but i dont do big jobs mainley use volumetrics, which are slow and if i have a block i stop, rev then empty pipe, once tarp wears i can replace,