Our company implement Iso-8535 Standard to produce compression-ignition common-rail high pressure fuel tube. The raw material SDY1800 is almost the same as German grade DSG 1800, it is jointly developed by us and Baosteel. The normal working pressure can be over 1600KG, 1800KG, the tolerance for OD and iD can be + 0. 05MM, core quality can reach grade Q. Now we are the best manufacturer in China.