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A333 Seamless & Welded Steel Pipe
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ASTM A333 is the standard specification for seamless and welded carbon and alloy steel pipe for low temperature applications or other applications requiring notch toughness. This standard covers several grades of ferritic steel: Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10 and Grade 11.
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PRODUCT PARAMETERS

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.%)MicrostructurePropertiesExamples
Low-carbon steel< 0.25Ferrite, pearliteLow hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel0.25 – 0.60MartensiteLow hardenability, medium strength, ductility and toughness
High-carbon steel0.60 – 1.25PearliteHigh 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


A333  Seamless & Welded Steel Pipe Description
The  main components of A333 seamless steel pipe include iron, carbon, chromium,  nickel, manganese and other elements. Chromium has excellent corrosion resistance, while the addition  of nickel further enhances the corrosion resistance and toughness of the  material. A333  seamless steel pipe has high strength and hardness, as well as good  plasticity and toughness. These excellent mechanical properties make A333  seamless steel pipe an ideal choice in many high-strength,  high-corrosion-resistant application scenarios. A333 seamless steel pipe is  commonly used to transport oil and natural gas with high temperature and high  pressure owing to the excellent sealing and corrosion resistance.


Product Parameters
Product NameA333 Seamless & Welded Steel Pipe
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer DiameterSeamless: 1/4"-36"Welding: 21.3mm-3620mm
Round Tube: 1/2"-10"Square  Tube/Rectangular Tube: 15x15mm-400x600mm
Wall  ThicknessSeamless: 1.25mm-50mmWelding: 1.65mm-65mm
Length3-12 meters, Support customization
Surface ProcessBright, Polished, Black
Other  ServicesMachining(cnc), Centerless Grinding(cg), Heat  Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting,  Bending, Small Machining, etc.
Chemical Composition
A333Grade1Grade3Grade4Grade6Grade7Grade8Grade9Grade10Grade11
C0.30.190.120.30.190.130.20.20.1
Mn0.40-1.060.31-0.640.50-1.050.29-1.060.90.90.40-1.061.15-1.500.6
P0.0250.0250.0250.0250.0250.0250.0250.0350.025
S0.0250.0250.0250.0250.0250.0250.0250.0150.025
Si-0.18-0.370.08-0.370.10 min0.13-0.320.13-0.32-0.10-0.350.35
Ni-3.18-3.820.47-0.980.42.03-2.578.40-9.601.60-2.240.2535.0-37.0
Cr--0.44-1.010.3---0.150.5
Cu--0.40-0.750.4--0.75-1.250.15-
Al--0.04-0.30----0.06-
Mechanical Properties
A333Tensile Strength min.Yield Strength min.Elongation % min.
GradepsiMPapsiMPaVerticalTransverse
Grade155 00038030 0002053525
Grade365 00045035 0002403020
Grade460 00041535 0002403016.5
Grade660 00041535 0002403016.5
Grade765 00045035 0002403022
Grade8100 00069075 00051522-
Grade963 00043546 00031528-
Grade1080 00055065 00045022-
Grade1165 00045035 00024018-
Scope of  Application
Seamless  and welded steel pipes for low temperature service and other applications  with the required notch toughness.


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PRODUCT DISPLAY

We adopt high standard production processes, select high-quality steel raw materials, and provide diverse product specifications and models. All steel products have passed strict quality testing, with smooth and even surfaces, precise dimensions, excellent compressive strength, corrosion resistance, and processability. Support customized thickness, length, and special process requirements to meet different usage standards in different scenarios. Clear display of high-definition detailed images and technical parameter tables of the physical object, ensuring transparent and visible quality.

PRODUCT APPLICATION

This product is widely used in the fields of building structures, mechanical manufacturing, automotive parts, energy equipment, and home hardware, and is suitable for scenarios such as load-bearing frames, precision parts, and industrial pipelines. With excellent physical performance and stability, it can easily meet the demands of high strength, high wear resistance, and extreme environments. Support collaboration with engineering teams to provide material selection suggestions and assist clients in efficiently implementing their projects.

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PRODUCT PACKAGING

Adopting a professional industrial packaging solution that is moisture-proof and scratch resistant, each batch of steel is tied and fixed with customized wooden frames/steel strips, combined with anti rust coatings and cushioning pads to ensure zero damage during transportation. Clear product model, batch number, and storage identification on the outer packaging, supporting customized enterprise logos and information labels. Environmentally friendly and recyclable packaging materials practice green concepts, reducing transportation and disassembly costs.

FACTORY DISPLAY

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FAQ

Q1: Do you pack the products?

A: Yes, in general, we will strictly pack the fragile products, such as stainless steel, aluminum, etc. to prevent the products from being scratched. We can also pack the goods according to the customer's requirements.

Q2: Can you provide samples?

A: Yes, we can provide free samples, but customers need to bear the transportation costs.

Q3: How do you guarantee the quality of your products?

A: Our factories are professionally certified, and each product is inspected piece by piece according to domestic and international QA/QC standards. We can also show the product quality certificate to customers.

Q4: Do you make customized products?

A: Yes, we have many years of experience in product customization and can tailor products for you according to your specific requirements.

Q5: Do you accept third-party inspection?

A: We accept third-party inspection: SGS, V-trust, TUV, DNV and other third-party inspections.

Q6: What are your payment terms?

A: We accept 30% T/T advance payment and 70% balance before delivery. We will show you the photos of the products and packages before you pay the balance.

Q7: What are your delivery methods?

A: EXW, FOB, CIF, CFR, DDU, etc.

Q8: What is your delivery time?

A: For stock products, we can deliver the goods to the loading port within 3-7 days after receiving your advance payment. For production cycle, it usually takes about 15 to 30 days after receiving the deposit.

Q9: Do you have discounts for large orders?

A: Our company has the ability to supply large projects and also has very good preferential policies for large orders.

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