1.Cast iron water strainer (JIS F7221) 2.cast iron , JIS FC20 3.Filter zinced JIS SS41 4. 10kg leaking test 5.5K,10K ... We had supplied the cast iron water/oil strainer to Japan market for many years. Included Sigle type, Double type, Y type, mud box ... , flanges etc.The body made with grey / ductile cast iron, The filters made with stainless ...