Bob Mehew said:
Hammy said:
Could somebody explain what is wrong with the Raumer Superstar anchor?
I had not spotted they were 316 but there is a weld which could put in stress which raises the chloride stress corrosion cracking concern. Thanks for identifying them.
I'm with you on the weld but this is (I know I've said this before) the SCC that has never been observed in the UK on the tens or hundreds of thousands of climbing bolts, lots of which are 304, installed on sea cliffs around the country?
I guess my questions are:
a) does anyone actually think that say the Raumer anchor is not good enough (i.e. if the approved anchors didn't exist, would these anchors remain unapproved)?
b) if there is a supply issue with the IC anchors, is it better to wait rather than use alternative anchors?
The skill and attention of the installer (mixing the resin right, keeping a sample, blowing out the holes properly, putting bolts in independent pieces of solid rock) is way more important than what bit of metal goes in a hole.