| Message: | Thickness:2 - 30 mm
Section Shape:Round
Outer Diameter(Round):12 - 920 mm
Technique:Hot Rolled
Certification:IOS
Surface Treatment:hot rolled
Special Pipe:API Pipe
Alloy Or Not:Non-alloy
Secondary Or Not:Non-secondary
Product name:Hot-rolled seamless steel pipes building materials seamless pipe
Type:hot rolled
Usage:struture
Length:1-12m
Shape:Round Square
Material:Q195/Q215/Q235/Q345
Keyword:Mill Test Certificate Steel Pipe
Certificate:IOS
Hot rolled seamless steel tube: hot rolling is relative to cold rolling, cold rolling is under the recrystallization temperature, and hot rolling is above the recrystallization temperature.
Hot-rolled seamless tube can destroy the cast structure of steel ingot, refine the grain of steel and eliminate the defects of microstructure, so that the microstructure of steel can be compacts and the mechanical properties can be improved.The improvement is mainly reflected in the direction of rolling so that the steel is no longer isotropic to some extent.The bubbles, cracks and looseness formed during pouring can also be welded under high temperature and pressure. url:http://www.jiade-group.com |
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