Project Description

Commitment to You

We are committed to integrate steel resources in china and serve the global steel market. We have 15+ years of experience in steel researching, production, managing and sales.

Our ability to purchase materials directly from leading mills will give you the competitive edge. Any Questions Just Call +86-731-89903933

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:

  1. ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
  2. DIN1629 Seamless Circular Unalloyed Steel Tubes
  3. EN10297 Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes
  4. BS6323 Specification for Seamless and Welded Steel Tubes for Automobile, Mechanical and General Engineering Purposes
  5. JIS G3445 Carbon Steel Tubes for Machine Structural Purposes

Steel Grades:

  1. ASTM A519: 1010, 1020, 1035, 1045, 1060;
  2. IN 1629: St37.0 (1.0254), St52.0 (1.0421);
  3. EN 10297: C35E (1.1181), C45E (1.1191), C60E (1.1221), E235 (1.0308), E355 (1.0580), E355K2 (1.0920);
  4. BS 6323: HFS 3, HFS 5.
  5. JIS G3445: STKM 12A, STKM 13A, STKM 16A, STKM 17A, STKM 19A.

Sizes Range:

OD10.2mm-720mm, WT: 1.6mm-100mm

Chemical Composition(%):

Similar Grades C Si Mn P S Cr Ni Mo Al Cu
1010/STKM 12A (0.08-0.13)/(0.20 max) (/)/(0.35 max) (0.30-0.60)/(0.60 max) 0.04 max (0.05 max)/(0.04 max) / / / / /
1020/St37.0/E235/HFS 3/STKM 13A (0.18-0.23)/(0.17 max)/(0.17 max)/(0.20 max) (/)/(/)/(0.35 max)/(0.35 max) (0.30-0.60)/(/)/(1.20 max)/(0.90 max) (0.04 max)/(0.04 max)/0.035 max)/(0.05 max) (0.05 max)/(0.04 max)/(0.035 max)/(0.05 max) / / / / /
St52.0/E355/E355K2/HFS 5/STKM 19A (0.22 max)/(0.22 max)/(0.20 max)/(0.23 max)/(0.25 max) (/)/(0.55 max)/(0.50 max)/(0.50 max)/(0.55 max) (/)/(1.60 max)/(0.90-1.65)/(1.50 max)/(1.50 max) (0.04 max)/(0.030 max)/0.030 max)/(0.05 max)/(0.04 max) (0.035 max)/(0.035 max)/(0.030 max)/(0.05 max)/(0.04 max) (/)/(/)/(0.30 max)/(/)/(/) (/)/(/)/(0.50 max)/(/)/(/) (/)/(/)/(0.10 max)/(/)/(/) (/)/(/)/(0.20 min)/(/)/(/) (/)/(/)/(0.35 max)/(/)/(/)
1035/C35E/STKM 16A (0.32-0.38)/(0.32-0.39)/(0.35-0.45) (/)/(0.40 max)/(0.40 max) (0.60-0.90)/(0.50-0.80)/(0.40-1.00) (0.04 max)/(0.035 max)/0.04 max) (0.05 max)/(0.035 max)/(0.04 max) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/)
1045/C45E/STKM 17A (0.43-0.50)/(0.42-0.50)/(0.45-0.55) (/)/(0.40 max)/(0.40 max) (0.60-0.90)/(0.50-0.80)/(0.40-1.00) (0.04 max)/(0.035 max)/0.04 max) (0.05 max)/(0.035 max)/(0.04 max) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/) (/)/(/)/(/)
1060/C60E (0.55-0.65)/(0.57-0.65) (/)/(0.40 max) (0.60-0.90)/(0.60-0.90) (0.04 max)/(0.035 max) (0.05 max)/(0.035 max) (/)/(/) (/)/(/) (/)/(/) (/)/(/) (/)/(/)

Mechanical Properties

Similar Grades Yield Strength R2 (Mpa) Tensile Strength Rm (Mpa) Elongation(%)(L)
1020/St37.0/E235/STKM 13A (221 min)/(215 min)/(215 min normalized)/(215 min) (345 min)/(350-480)/(360 min normalized)/(370 min) (25 min)/(25 min)/(25 min)/(25 min)
St52.0/E355/STKM 19A (335 min)/(335 min normalized)/(315 min) (500-650)/(490 min normalized)/(490 min) (21 min)/(20 min)/(18 min)
1035/C35E/STKM 16A (276 min)/(270 min)/(325 min) (448 min)/(520 min)/(510 min) (20 min)/(19 min)/(15 min)
1045/C45E/STKM 17A (310 min)/(305min)/(345 min) (517 min)/(580 min)/(550 min) (15 min)/(14 min)/(15 min)

Outer Diameter Tolerances

+/-1%, or +/-0.5mm (Chose the bigger one)

Wall Thickness Tolerances

Scope of Outer Diameter Ratio of Wall Thickness and Outer Diameter (WT/OD) Tolerance
102mm max / +/12.5% or +/-0.4mm (Chose the bigger one)
102mm min 0.05 max +/15% or +/-0.4mm (Chose the bigger one)
102mm min 0.05-0.10 +/12.5% or +/-0.4mm (Chose the bigger one)
102mm min 0.10 min (-10%, +12.5%)

Delivery Conditions

  1. Hot Rolled only.
  2. Stress Relieved.
  3. Annealed.
  4. Normalized.
  5. 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.

Experienced 15+ Years

Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets.

We Can Supply Follows Products with High Quality:

  1. Cold Rolled Steel Tube
  2. Cold Drawn Steel Tube
  3. Hollow Bar
  4. Honed Tube
  5. Plated Tube
  6. Plated Bar
  7. Boiler Tube

All Products According Quality Standard Strictly:

  1. ASTM: ASTM A519, ASTM A513.
  2. JIS:JIS G3441, JIS G3445, JIS G3466, JIS G3459.
  3. DIN: DIN1626, DIN1629, DIN2391, DIN2393, DIN2448, DIN2458.
  4. EN: EN10305.
  5. BS: BS6323.

Wide Range of Pipes to Fit Your Industry:

  1. OD from 5mm to 820mm.
  2. Wall Thickness from 0.1 to 100mm.
  3. Length up to 50mtr per pc.

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