Name: ASTM A333 Seamless Steel Pipes for Liquid Transportation
Brand: Rio Tinto Wire Rods and Pipe
Availability: InStock
Rating: 5 (1 reviews)

Seamless steel pipe is a steel pipe made by heating a solid steel billet at high temperature and then processing it through perforation, rolling and other processes. Its notable feature is that it has no welding seams and has a continuous tubular structure as a whole.

Email : hanstatsteel@gmail.com
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Addess : Huaiyin District,Jinan City,Shandong,China.

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Description

Grade and Material:

• Carbon Steel:Typically used for water and gas transportation.

• Alloy Steel:Used for more corrosive environments or higher temperature applications,such as transporting chemicals or hot water.

• Stainless Steel:Provides excellent corrosion resistance for transporting potable water,chemicals,and food-grade liquids.

Surface Finish:

• Roughness(Ra):The surface roughness can affect the flow characteristics and should be specified according to the application requirements.

• Coatings:May include internal and external coatings for enhanced corrosion protection,such as epoxy,fusion-bonded epoxy(FBE),or polyurethane.

Pressure Rating:

• PSI(Pounds per Square Inch):Indicates the maximum pressure the pipe can withstand.

• Bar:A metric unit of pressure,also used to specify the pressure rating.

Temperature Range:

• Operating Temperature:The range of temperatures within which the pipe can safely operate without degradation of material properties.

• Expansion and Contraction:Consideration of thermal expansion and contraction is crucial for proper installation and operation.

Size Tolerances:

• Outer Diameter(OD)Tolerances:Specify the acceptable variation in the outer diameter of the pipe.

• Wall Thickness Tolerances:Ensure the pipe has the required wall thickness for pressure containment.

Weight per Unit Length:

• Calculated based on the volume of steel per unit length and the density of the material.

Elongation:

• The percentage of elongation at break,indicating the ductility of the material.

Impact Resistance:

• Measured in terms of Charpy V-notch(CVN)or Izod impact tests,indicating the material's ability to withstand impact without fracturing.

Flammability and Smoke Emission:

• Important for safety considerations,especially in enclosed spaces or where fire hazards are present.

Bend Radius:

• The minimum radius to which the pipe can be bent without causing damage or failure.

Enhanced Manufacturing Process:

• Mandrel Milling:Ensures a precise inner diameter and smooth bore,which is crucial for applications requiring low friction or high flow rates.

• Heat Treatment:Quenching and Tempering:To achieve the desired balance of hardness and toughness.

• Normalizing:To improve the microstructure and reduce residual stresses.

Non-Destructive Testing(NDT):

• Ultrasonic Testing(UT):To detect internal defects.

• Magnetic Particle Inspection(MPI):To detect surface and near-surface defects in ferromagnetic materials.

• Radiographic Testing(RT):To provide a visual inspection of the internal structure.

End Preparation:

• Beveling:To prepare the ends for welding or threading.

• Threading:For applications requiring connections with fittings.

Applications:

• Urban Infrastructure:For municipal water supply and sewage systems.

• Industrial Plants:For chemical processing plants,refineries,and power plants.

• Agriculture:For irrigation systems and water management in farming.

• Fire Safety:For fire sprinkler systems in commercial and residential buildings.

Standards and Specifications:

• ISO 4200:International Standard for seamless steel tubes for water,gas,and general purposes.

• BS EN 10255:European Standard for cold-drawn seamless tubes for precision applications.

• DIN 2448:German Standard for seamless steel tubes for general purposes.

By considering these additional parameters,engineers and designers can select the most appropriate seamless steel pipes for their specific liquid transportation needs,ensuring safety,efficiency,and compliance with industry standards.

Packaging & Delivery

Performance

1. Mechanical properties

High strength: seamless pipes have no welds, and the overall strength is higher than that of welded pipes, suitable for high pressure and impact loads;

Fatigue resistance: not easy to crack under cyclic loads, suitable for vibration environments (such as mechanical transmission pipes).

2. Corrosion resistance

Stainless steel material: 304/316L seamless pipes are resistant to acid, alkali and salt corrosion and are widely used in chemical and marine engineering;

Surface treatment: galvanizing (Zn), epoxy resin coating (EP), and polyethylene lining (PE) can further enhance the corrosion resistance.

3. Process performance

Weldability: Carbon steel and low alloy steel seamless pipes can be connected by welding, and stainless steel pipes require special welding materials;

Processability: Can be bent, expanded, reduced in diameter and other processing (cold-rolled pipes are easier to form).

4. Sealing

The weld-free design is suitable for scenarios with high sealing requirements (such as gas pipelines and hydraulic systems).

FAQ

1. Q: What is the difference between seamless pipes and welded pipes?

Structure: Seamless pipes have no welds, and welded pipes have longitudinal or spiral welds;

Strength: Seamless pipes have higher overall strength and are suitable for high-pressure scenarios (such as boilers and hydraulic systems);

Cost: The production process of seamless pipes is complex, and the price is 10%-30% higher than that of welded pipes.

2. Q: How to choose the material of seamless pipe?

General environment: choose Q235 or 20# carbon steel (low cost, easy to process);

Corrosive environment: choose 304/316L stainless steel or galvanized seamless pipe;

High temperature and high pressure: choose 15CrMo, 12Cr1MoV and other alloy pipes (specific temperature and pressure parameters must be provided).

3. Q: Can the size of seamless pipe be customized?

Regular specifications (outer diameter 6-630mm, wall thickness 0.5-50mm) can be customized in length (such as fixed length 6m, 9m);

Special caliber or wall thickness requires mold production, the minimum order quantity is higher (usually ≥5 tons), and the delivery time is extended by 2-4 weeks.

4. Q: How to detect the quality of seamless pipes?

Answer:

Appearance: no cracks, folds, or scars on the surface, and uniform wall thickness;

Non-destructive testing: ultrasonic (UT) and eddy current (ET) detection of internal defects;

Pressure test: water pressure test (such as water pressure 10MPa, pressure maintenance for 5 minutes without leakage).

5. Q: How to prevent rust during transportation of seamless pipes?

Answer:

Short-term transportation: can be naked in dry environment, and covered with waterproof cloth in humid environment;

Long-term storage: stored in a dry warehouse, ≥20cm from the ground, regularly check the surface rust, and re-oil if necessary.

Black Surface Seamless Carbon Steel Tube for Q195-Q345 Grade