Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Circular Hollow Section,round steel hollow section

Specifications of Circular Hollow Section (CHS):

1.Outer Diameter: 54mm-258mm
2.Wall Thickness: 2.5mm-4mm
3.Theoretical Weight:3.175kg/m-25.056kg/m
4.Cross Section Area: 4.045m2-31.919m2
5.Standard: ASTM, GB, DIN, JIS 
6.Technique: hot rolled or ERW (seamless and welded steel pipe) 
7.Size: 10*10mm-500*500mm (square) or 20*10mm~600*400mm (rectangular) 
8.Implementation of standards: Executable GB6728-2002 standards for structural steel cold-formed hollow Executable JISG3466-88 in Japan to adapt the general scope of Rectangular Pipe Construction Standards Application: Widely used in bridge buildings, construction supports, mechanical tube, and furniture etc. 
9.General Packaging: Follow as clients' requirement 
All circular tube is available in a range of standard lengths or can be cut as you request.

Circular Hollow Section

Product Name round steel tube/round steel hollow section/CHS/circular hollow section
Size OD 13-1800mm
Wall Thickness 0.8-35mm
Length less than 12m
Standard ASTM A53 BS1387 BS EN39 ASTM A500 BS4568 BS EN31
Material Chinese Grade Q195 Q235 Q345
Foreign Grade ASTM  ASTM A519 :Grade B,Grade C,Grade D,Grade 50
EN S185,S235JR,S235JO,E335,S355JR,S355J2
JIS S JIS 4051:S330,SS400,SPFC590,S20C, S45C
Usage Used For Construction,Machinofacture And Accessorize,ect
Ends Plain,Beveled,Threaded with coupling or cap
Surface Treatment Bared,Galvanized,Black painted(varnish coating),With oiled,corrosion resistant coating
Technique ERW(Electronic Resistance Welding)
EFW(Electronic Fusion Welding)
DSAW(Double Submerged Arc Welding)
Welded Line Type Longitudinal
Section Shape Round
Inspection With Hydraulic Testing,Eddy Current and Infrared Test


Features of Circular Hollow Sections (CHS):
1.Polished lines cause smooth surface appearance
2.Ideal for applications where the products confront compression and tension
3.Perfect as bracing and columns
4.Lack of protruding edges makes them safe to touch
5.Smooth round surfaces used in thoroughfare areas 
6.Fully closed sections are less exposed to the environment 
7.Easy to keep clean from dust and other material build-up
round steel hollow section
Applications of Circular Hollow Sections (CHS):
1.Residential construction: structural and foundation uses
2.Non-Residential construction: commercial and industrial construction, signage, leisure equipment , road furniture, stadiums, fire hydrant/sprinkler application
3.Manufacturing: materials handling equipment
4.Mining: conveyor equipment, wash plants, mining equipment
5.Rural: feed and fencing, farm machinery
6.Transport: truck and trailer, horse floats, car carrying, box trailers
7.Powder coaters: playground equipment, architectural features in shopping centers 



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