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A53 Seamless & Welded Carbon Steel Pipe

A53 American standard seamless steel pipe is made of high-quality steel billets through hot rolling, cold drawing and other processes. The chemical composition and mechanical properties of this steel pipe comply with the requirements of American standard ASTM A53/A53M.

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Carbon Steel: Properties, Production, Examples and Applications

Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.

Types of carbon steel and their properties

Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel . Their carbon content, microstructure and properties compare as follows:

Carbon content (wt.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness
High-carbon steel	0.60 – 1.25	Pearlite	High hardness, strength, low ductility

Carbon Steel Description

Grade:

1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E

2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q

3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80

4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE

PRODUCT DETAILS

A53 Seamless & Welded Carbon Steel Pipe Description

ASTM A53 seamless steel pipe has high strength, good toughness, good processing performance and welding performance. A53 American standard seamless steel pipes are available in a wide range of specifications, with a wide range of outer diameters and wall thicknesses. Because ASTM A53 seamless carbon steel pipe has excellent material properties and good processing performance, it is widely used in petroleum, chemical industry, electric power, machinery manufacturing and other fields. For example, in the petrochemical industry, ASTM A53 steel pipes can be used to transport high-temperature and high-pressure oil, natural gas and other media.

A53 Seamless & Welded Carbon Steel Pipe Description
Product Name	A53 Seamless & Welded Carbon Steel Pipe
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
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
A53	Grade	C	Mn	P	S	Cu	Ni	Cr	Mo	V
TypeS(Seamless)	A	0.25	0.95	0.05	0.05	0.4	0.4	0.4	0.15	0.08
TypeS(Seamless)	B	0.3	1.2	0.05	0.05	0.4	0.4	0.4	0.15	0.08
TypeE(Resistance Welding)	A	0.25	0.95	0.05	0.05	0.4	0.4	0.4	0.15	0.08
TypeE(Resistance Welding)	B	0.3	1.2	0.05	0.05	0.4	0.4	0.4	0.15	0.08
TypeF(Furnace Welding)	A	0.3	1.2	0.05	0.05	0.4	0.4	0.4	0.15	0.08

Mechanical Properties
A53	GradeA	GradeB
Tensile Strength Min.psi(MPa)	48,000(330)	60,000(415)
Yield Strength Min.psi(MPa)	30,000(205)	35,000(240)

Physical Performance
Density 20°C	Modulus of Elasticity Kn/² mm				Coefficient of Thermal Conductivity 20°C	Heat Capacity 20°C	Resistivity 20°C
Kg/dm³	20C°	300C°	400C°	450C°	W/m K	J/kg K	Ωmm²/m
7.85	210	192	184	179	51	461	0.2

Scope of Application

Construction: underground pipeline, underground water, hot water transmission, mechanical processing, bearing sleeve, processing machinery parts, etc.

Electrical: natural gas transmission, hydroelectric fluid pipelines, anti-static pipes for wind farms, etc.

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FAQ

Q1. What steel products do you manufacture and supply?
A: We provide a range of steel products for construction, infrastructure, industrial and engineering applications, including rebar, H-beams, angle steel, channel steel and other structural steel products.

Q2. Can you provide different sizes and specifications?

A:Yes. We can supply products according to standard specifications as well as customer-specific size and dimensional requirements, subject to production feasibility.

Q3. Can you provide product specifications before placing an order?

A:Yes. Product specifications, dimensions, material grades and other technical information can be provided for review before order confirmation.

Q4. Do you support customized steel products?

A:We support flexible steel processing and customized requirements based on product type, dimensions, cutting requirements and project specifications.

Q5. Are you a steel manufacturer or trading company?

A:We have dedicated steel manufacturing and processing facilities and provide factory-direct supply for customers. Our production capabilities allow us to maintain greater control over manufacturing, processing and quality inspection.

Q6. What processing services do you provide?

A:Depending on the product and project requirements, our processing capabilities may include cutting, sizing, forming and other customized processing services.

Q7. Can you manufacture according to customer drawings?

A:We can review customer drawings, specifications and technical requirements to determine suitable production and processing solutions.

Q8. What is your production capacity?

A:Production capacity depends on product type, specifications and order quantity. Please contact our team with your requirements so we can provide a suitable production schedule.

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