Hot Rolled Carbon Steel Tube for Mechanical Purpose

China

Sep 21, 2016

Hot Rolled, Carbon Steel Tube, Hollow Bar,

Description

 Hot Rolled Carbon Steel Tube for Mechanical Purpose

Hot Rolled Carbon Steel Tube for Mechanical Purpose
Application:
1. Solar Racking;
2. Agricultural and dairy products;
3. Greenhouse structures and equipment
4. Playground and recreational equipment
5. Conveyor rollers
6. Carports and metal buildings
7. Trailers
8. Appliances
9. Canopies and Shade Structures
10. Satellite dish supports
11. Vinyl stiffening tubes
12. Miscellaneous product applications
Order Definition:
Details (essential data)
1. Product “ Mechanical Tube”.
2. Manufacturing norms.
3. Steel grade and heat treatment.
4. Nominal dimensions:
A. Outer Diameter
B. Wall Thickness
C. Length
5. Quantity and tolerances
Options
1. Request for steel with controlled sulphur content
2. Special tolerances
3. Lengths different to those shown as standard.
4. Special checks
5. Certification and marking different to that shown in the present specifications.
6. Colour coding of one end
Standard:
JIS G3445 Carbon Steel Tubes for Machine Structural Purposes
Steel Grades:
JIS G3445: STKM 12A, STKM 13A, STKM 16A, STKM 17A, STKM 19A
Sizes Range:
OD10.2mm-720mm, WT: 1.6mm-100mm
Chemical Composition(%):
STKM 12A C≤0.20, Si≤0.35, Mn≤0.60, P≤0.04, S≤0.04,
STKM 13A C≤0.20, Si≤0.35, Mn≤0.90, P≤0.05, S≤0.05,
STKM 19A C≤0.25, Si≤0.55, Mn≤1.5, P≤0.04, S≤0.04,
STKM 16A C:0.35-0.45, Si≤0.40, Mn:0.40-1.00, P≤0.04, S≤0.04,
STKM 17A C:0.45-0.55, Si≤0.40, Mn:0.40-1.00, P≤0.04, S≤0.04,
Mechanical Properties
Steeel Grade: STKM 13A
Yield Strength R2 (Mpa):215 min
Tensile Strength Rm (Mpa):370 min
Elongation(%)(L):25 min

Steeel Grade: STKM 19A
Yield Strength R2 (Mpa):315 min
Tensile Strength Rm (Mpa):490min
Elongation(%)(L):18min

Steeel Grade: STKM 16A
Yield Strength R2 (Mpa):325 min
Tensile Strength Rm (Mpa):510 min
Elongation(%)(L):15 min

Steeel Grade: STKM 16A
Yield Strength R2 (Mpa):345 min
Tensile Strength Rm (Mpa):550 min
Elongation(%)(L):15 min
Outer Diameter Tolerances
+/-1%, or +/-0.5mm (Chose the bigger one)
Wall Thickness Tolerances
Scope of Outer Diameter:102mm max
Tolerance:+/12.5% or +/-0.4mm (Chose the bigger one)

Scope of Outer Diameter:102mm min
Ratio of Wall Thickness and Outer Diameter (WT/OD):0.05 max
Tolerance:+/15% or +/-0.4mm (Chose the bigger one)

Scope of Outer Diameter:102mm min
Ratio of Wall Thickness and Outer Diameter (WT/OD):0.05-0.10
Tolerance:+/12.5% or +/-0.4mm (Chose the bigger one)

Scope of Outer Diameter:102mm min
Ratio of Wall Thickness and Outer Diameter (WT/OD):0.10 min
Tolerance:(-10%, +12.5%)
Delivery Conditions
Hot Rolled only.
Stress Relieved
Annealed
Normalized
Quenched and Tempered
Surfaces Conditions
Black surface with oxygen skin
Grinded for external or internal surface, or external and internal surface
Peeled for external or internal surface, or external and internal surface
Certification
The product is supplied with 3.1.B inspection certificate, in conformity with EN 10204.