Seamless Hollow Section Square Tube

Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of seamless hollow section square tube in China. Please feel free to buy high quality seamless hollow section square tube from our factory. Good service and reasonable price are available.

Seamless Hollow Section Square Tube
Seamless Structural Hollow Section
Seamless Steel Square Tube, Seamless Steel Rectangular Tube
Material Grade:
Grade B/S235JR/STKR400/STKR41/C250/20#,  
S355JR/S355J0H/S355J2H/STKR490/STKR50/C350/Q345B/Q345C/Q345D
SHS: 20*20mm-600*600mm
RHS: 20*30mm-600*800mm
Wall Thickness: 2.0mm-35mm
Wall Thickness Tolerance: +/-10%
 

Heat Treatment/Hot Finishing: 
+N: Normalized
+QT: Quenched and tempered

Standard and Specifications:

ASTM A500: Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.
Scope: This specificaiton covers cold-formed welded and seamless carbon steel round, square, rectangular, or special shape structural tubing.
Application: General structural purposes.

ASTM A519: Seamless Carbon and Alloy Steel Mechanical Tubing.
Scope: This specification covers both seamless hot-finished mechanical tubing and seamless cold-finished mechanical tubing.
Tube Shapes: Square, Rectangular, Round, Special Sections.
Application: Mechanical purpose.

JIS G 3466: Carbon Steel Square and Rectangular Tubes for General Structure.
Scope: This specification covers the carbon steel square and rectangular tubes.
Application: Used for civil engineering, architecture and other structures.

BS EN 10210: Hot Finished Structural Hollow Sections
Scope: This standard specifies the requirements for hot finished hollow sections of circular, square, rectangular or elliptical forms.
(1. Hot formed with or without subsequent heat treatment. 2. Cold formed with subsequent heat treatment to obtain equivalent metallurgical conditions to those obtained in the hot formed product.)
Application: For building and civil engineering.

AS/NZS 1163: Structural Steel Hollow Sections
Scope: This standard specifies the requirements for cold-formed steel hollow sections.
Application: For structural purposes.

Usage: 
Glass curtain wall, large steel structure engineering, machinery manufacturing, shipbuilding, bridges, construction industry, metallurgical industry, automobile industry, railway, highway, aviation, container, furniture, decoration and other industries