Steel is the most common material for spring washers due to its ease of process and its high tensile strength. Chrome vandium alloy is a higher quality steel with a good through-hardening capability; it is used to make very thick spring washers.
How to Prevent Swimmerâs Itch. Thereâs no cure-all to eliminate swimmerâs itch. The negative symptoms are, ironically, a problem of our own immune systemâs making, and short of abstaining from swimming altogether, thereâs a risk of getting swimmerâs itch in a Northern Michigan lake.
â¢ Try not to sunbath for too long, you might catch sunburn. â¢ Halong Bay water is pretty warm during winter so feel free to swim or dive from your junk, however, try to cover yourselves immediately when you are done with the swimming because you might catch a cold. Always swim in a group of at least 3-5 people. Remember to warm up properly. â¢ Researchers say swimming ability is severely decreased in cold water so no matter how confident you are at you swimming, try not to swim too early in the morning or too late in the afternoon.