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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
galvanized seamless steel tube

For steel:10# 20# ST37 St45 St52 35# 45#20Cr 40Cr
Standard:DIN2391-1,EN10305-1
SIZE:กำ4-60
Main Features:
(1)technique: galvanization in precision tube
(2)features: long-term antirust, over 20O Hours in salt spray test, non dropping of zinc coating after bending