... K7&K9&K8 3.ling according to ISO4179 flange t joint ductile iron pipe Standard: JIS, AISI, ASTM, GB ... foodstuff, home electric appliances, kitchen articles, construction and decorations, railroad vehicles.Some seamless stainless steel pipe/tube ... tools, mechanical parts, petroleum refining equipment, bolts and nuts, pump rods, and kitchenware. Inspection:Chemical Analysis -- Component Analysis--- ...