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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
cold drawn precision seamless steel tube
For steel:10# 20# ST37 St45 St52 35# 45# 20Cr 40Cr 16Mn
Implementation of standards:DIN2391-1. EN10305-1. GB8163. ASTMA179. ASTMA192
SIZE: กำ4-60
Main Features:
(1)technique: cold drawing
(2)features: good wall thickness tolerance,hight concentricity,
hight concentricity,small tolerance of OD and ID