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Groove Pipe

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Grade Group:A53-A369, 10#-45#, Cr-Mo alloy, 16Mn, Q195-Q345

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Product description

Parameters

Models

Special pipe/tube

special shaped steel pipes/tubes

1.deformed steel pipes/tubes

2.thickness:0.5-20mm

3.special design & demensions can be customized

Shape: The tubes shall be furnished in the following shapes, as specified by the purchaser: round, square,HEXAGON,rectangular and special sections.

Chemical Composition& Mechanical Properties(Type: Cold Drawn Seamless Mechanical/CDS)

Final supply conditions

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.
Cold finished (soft)	BKW	The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).
Cold finished and stress-relieved	BKS	Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed	GBK	The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.