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 high pressure oil tube
 cold drawn precision seamless steel tube
 cold rolled precision seamless steel tube
 black phosphated seamless steel tube
 galvanized seamless steel tube
 cold drawn seamless steel feed-water heater tube
high pressure oil tube
For steel:10# 20# St37 St45 St52
Implementation of standards:DIN2391-1. EN10305-1
Main Features:
(1)technique: advanced craft of cold-drawing and annealing
(2)main use: mainly used in diesel engine, gasoline engine oil line
(3)features: smooth inner surface, small tolerance of ID. inner and
outer non-oxidation .good plasticity and being easy to do further progress