Specification:Carbon Steel Tubes for Machine Structure Purposes
Application:For Machinery and Automobiles and Bicycles and Furniture Structural
Grade:STKM11/12/13/14/15/16/17/18/19/20(A B C)
Manufacture:Seamless or Welded Process
Section of Shape:Round
Outside Diameter: 21.7mm to 630mm according to JIS G3445
Wall Thickness:According to JIS G3445 or Specified
Length of Pipe:Fixed 5.8/6 Meters or SRL/DRL or Specified
Permissible Variations:According to JIS G3445 Standard
End of Finish: Plain & Beveled End &THD with Coupling
Heat treatment:Heat Treated
Surface:Bare or Coated Protective Paint or Anticorrosive Coating
MTC: Mill Test Certificate according to JIS G0415 3.1B/EN 10204 3.1B
Marking & Packing: According to JIS G3445 or Specified 
MOQ:5 Tons
Transportation:FCL&LCL by sea
Delivery:10-15 days after signed contract
Payment:L/C or T/T or D/P or O/A

Relevant Links:

1ASTM A134Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over) Steel Pipe
2ASTM A139Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
3ASTM A252Welded and Seamless Steel Pipe Piles
4ASTM A500Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
5ASTM A501Hot-Formed Welded and Seamless Carbon Steel Structural Tubing
6ASTM A618Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
7EN 10210Hot Finished Structural Hollow Section of Non-alloy and Fine Grain Structural Steels
8EN 10219Cold Formed Welded Structural Hollow Sections of Non-alloy and Fine Grain Steel
9JIS G3444Carbon Steel Tubes for General Structure
10JIS G3445Carbon Steel Tubes for Machine Structure
11JIS G3446Stainless Steel Pipe for Machine and Structural Purposes
12JIS G3475Carbon Steel Tubes for Building Structure
13GB/T 3094Cold Drawn Shaped Steel Tubes
14GB/T 8162Seamless Steel Tube for Structure Purposes
15GB/T 14975Seamless Stainless Steel Tube for Structural
16GB/T 18705Welded Stainless Steel Pipes for Decoration
17GB/T 30063Longitudinal Submerged Arc Welded Steel Tubes for Structural Purpose
18GB/T 34201Seamless Hot-Rolled Square and Rectangular Steel Tubes for Structure