This pipe marking guide will describe the best practices for making a visual pipe marking program compliant with OSHA/ANSI and various standards. four. Why we should always use Ashirvad make Rubber Lubricant for pushfit pipes and fittings installation? We generally persuade the usage of lubricant whilst inserting pipe/fitting. This helps https://austropipes.com/swr-pipes-and-fittings-manufacturer/