Product Description

Carbon Steel Tube 20#

Carbon steel 20# (Grade 20 carbon steel) is a widely used low-carbon steel under the Chinese GB/T 699 standard. It offers a balanced combination of strength, ductility, and machinability, making it suitable for a variety of industrial applications.

Product Parameters

Product Name

Carbon Steel Tube 20#

Standard

ASTM: Similar to A283 Grade C or AISI 1020

DIN: Comparable to St37-2

Outer Diameter

Seamless: 1/4"-36"

Welding: 21.3mm-3620mm

Round Tube: 1/2"-10"

Square Tube/Rectangular Tube: 15x15mm-400x600mm

Wall Thickness

Seamless: 1.25mm-50mm

Welding: 1.65mm-65mm

Length

3-12 meters, Support customization

Surface Process

Bright, Polished, Black

Other Services

Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

C

Si

Mn

P

S

0.17-0.23

0.17-0.37

0.35-0.65

≤ 0.035

≤ 0.035

 

International Trademark Comparison Table

AISI/SAE ISO DIN

BS

NF

JIS

S

1020 C22

CK22

IC22

C22/C20

S20C/S22C

≤ 0.035

 

Mechanical Properties

Tensile Strength ≥410 MPa
Yield Strength ≥245 MPa
Elongation ≥25%
Hardness ≤156 HB (annealed condition)

 

Scope of Application

● Structural components (brackets, frames).  ● Piping systems and hydraulic cylinders.

● Machinery parts (shafts, gears, bolts).         ● Automotive and agricultural equipment.

 

Product Application

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Packaging and shipping

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Factory Display

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FAQ

1. What products do you supply?
We supply carbon steel, galvanized steel, pre-painted steel, stainless steel, copper, aluminum, and structural steel sections. Our product range includes sheets, coils, pipes, bars, strips, angles, channels, I-beams, and H-beams.


2. Can you provide customized specifications?
Yes. We can supply products in different materials, grades, thicknesses, widths, lengths, and surface finishes. Please send us your detailed specifications so we can confirm availability.


3. What processing services do you offer?
Depending on the product and project requirements, we can provide cutting, slitting, custom sizing, and other processing services. Please provide your drawings, dimensions, tolerances, and processing requirements with your inquiry.


4. How do you ensure product quality?
Products are supplied according to the material, dimensions, specifications, and quality requirements confirmed in the order. Please inform us before ordering if your project requires specific inspections, tests, or documents.

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