20# / C22 Carbon Steel Tube

20# / C22 Carbon Steel Tube
Carbon steel 20# is ideal for projects requiring reliable performance at a competitive price, particularly in non-corrosive environments. For harsh conditions, surface treatments (e.g., galvanizing) or alloy steels are recommended.
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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 are your main products?
We primarily deal in carbon steel (hot-rolled/cold-rolled sheets, coils, pipes, and bars), structural steel (angle bars, channel steel, I-beams, H-beams, square/rectangular tubes, etc.), galvanized products (galvanized sheets, coils, pipes, and profiles), and aluminum products (sheets, coils, profiles, and bars). We can also supply other steel varieties based on customer requirements.


2. Are you a manufacturer or a trader?
We are a comprehensive service provider integrating trading, processing, and distribution. We maintain close partnerships with major steel mills in Vietnam and the surrounding region, ensuring a stable supply chain. Additionally, our in-house processing center offers value-added services, combining the flexibility of a trader with the service capabilities of a processing plant.


3. Do you accept small-batch orders? What is the minimum order quantity (MOQ)?
Yes, we support small-batch and trial orders. The MOQ is typically one container (approx. 20–25 tons), depending on product specifications and dimensions. MOQs for aluminum products can be lower; please contact us for details.


4. What is the typical delivery time?
For standard products, delivery takes 15–30 days after receipt of the deposit, depending on order volume, product type, and current production scheduling. Stock items can be delivered sooner. Delivery times for customized orders will be longer, and we will inform you in advance.


5. What payment methods do you accept?
We generally accept T/T (Telegraphic Transfer) and L/C (Letter of Credit). More flexible payment terms can be negotiated for long-term clients. Specific ratios (e.g., 30% down payment and 70% balance) can be adjusted based on the order value and credit status.


6. What processing services do you offer?
We provide services such as cutting, punching, bending, welding, uncoiling, and leveling. We also offer customized deep processing of profiles based on technical drawings. All processing is performed in-house to ensure quality control and timely delivery.

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