Synopsis of Process Routing: DIN highly accurate, cold drawn and bright seamless steel tube is used as the tube to be phosphated. The phosphated is realized with the imported chemical fluid to form a black film. The antirust oil is absorbed by means of...
seamless steel tube...
Synopsis of Process Routing: DIN highly accurate, cold drawn and bright seamless steel tube is used as the tube to be galvanized. The outer wall of tube is electroplate. The caps are covered at two ends of tube to prevent from the...
Synopsis of Process Routing: DIN highly accurate, cold drawn and bright seamless steel tube is used as the tube to be internally and externally galvanized. The inner and outer wall of tube areelectroplate, and/or passivated with military green after...
Synopsis of Process Routing: quality carbon steel → cold rolling → bright heat treatment without oxidization (NBK status) → nondestructive testing. In the wall honing and inside flushing under the high pressure→ Antirust oiling...
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