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20cr-alloy-seamless-steel-square-pipe Introduction:

Product name:	20cr-alloy-seamless-steel-square-pipe
Standard:	DIN GB ISO JIS BS ASTM AISI etc
Material:	10#,20#,35#,45#;16Mn;20Cr,40Cr;15CrMo,30CrMo,35CrMo,42CrMo;A106B,St37,St42,ASTM 4140, etc
Outer diameter:	cold rolled(≦6mm)hot rolled(≧32mm)
Length:	5-12m
Wall thickness:	1-25mm
End:	Plain end/ Beveled end( protected by plastic caps on both ends),cut square,grooved, threaded and coupling, etc
Surface treatment:	Bare,Painting black,Vanished,Oiled, Galvanized, Anti-corrosion,Heat preservation coating
Testing method：	Pressure test, Flaw detection,Eddy current testing, Hydrostatic testing or Ultrasonic examination and etc
Package:	Small pipe in bundles with strong steel strips, large pieces in loose,covered with plastic woven bags
Application:	Structure pipe; High and low pressure boiler tube; Liquid delivery;Seamless

20cr-alloy-seamless-steel-square-pipe

Refers to the ability of the material to resist the corrosion of the surrounding medium. The corrosion resistance of metals is related to many factors, such as the chemical composition of metals, processing properties, heat treatment conditions, microstructure and medium and temperature. Chemical corrosion is the result of the direct chemical interaction between the metal and the surrounding medium.