PVC Fittings for Water Supply Pressure Piping System ISO/GB, JIS,BS,ASTM standard All Lipson Fittings (Injections) are produced from High Cromium Based Stainless Steel Moulds and High Precision Injection Machines for Quality Consistency and Superior Product Finishing.Our pipes and fittings can be made, according and conforming to the following international standards:1) American standard (ASTM ...