304L Stainless Steel Traceless-Weld Rappel Ring

These are Climbing Taiwan's 304L welded rappel rings. What sets these apart from other welded rings is that these are solution annealed to improve corrosion resistance, which helps to homogenize the structure, dissolve any carbides formed during welding, and to address problems that arise with welding. The welds are also ground down to make it traceless (and helps with ring rotation for even wear). They are also passivated for additional corrosion resistance.  These have laser markings but are FAINT.  CTW doesn't like to laser after all the treatments. Laser-etching burns the surface, and consequently affects the corrosion resistance where the font is. They prefer passivation to be the last process. It keeps the rings clean and tidy and makes sure there's no contamination on the surface. We've given them an 8 kN work load limit (WLL) because the steel became more ductile after the the solution treatment (annealing). However their actual breaking strength is 80 kN!