Welded Steel tube E275, EN 10305-3

Product info

Supplier: Tapgroup internation.,JSC
Address: Số 32 Lô N4D, đường X2A, Yên Sở, Hoàng Mai, Hà Nội
Phone: 0084 933 86 77 86
Email: info@tapgroup.vn
Website: https://supplier-pipe-tube-ongthep.com
Insurance: 12 tháng
Status: Mới 100%
Origin: China, Korea, Malaysia, Thailand, Japan, EU, G7

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Product Name: Welded Steel tube E275, EN 10305-3
The alternative name or alias of a product: Welded Steel pipe E275, EN 10305-3 ERW tube E275, EN 10305-3
Product Description:
• Material: E275, Steel Number 1.0225
• Type: Welded (ERW)
•Standard EN 10305-3
• Size:
• Outer Diameter (OD): OD6 to OD193.7
• Wall Thickness (WT): 0.6mm to 6mm
• Length: 6000mm To 12000mm and the length according to customer's request
Quality Control:
• ISO 9001:, ISO 14001:2015, OHSAS 18001:2007 Quality management systems – Requirements
• Other:
. Certification:
• EN 10204 3.1: Inspection certificate type 2.1, 3.1 and 3.2 issued in accordance with EN 10204
• Shipping: Delivery of goods to the address requested by the customer
Chemical composition
Steel grade % by mass
Steel name Steel number Carbon. Max  Silicon. Max Manganese. Max Phosphorus. Max  Sulfur Altotalmin.
E275 1.0225 0.21 0,35 1.4 0,025 0,025 0,015
Mechanical Properties
Welded steel tube E275, also known as EN 10305-3, is a standard for cold-drawn welded tubes that are made of unalloyed and alloyed steels. The E275 designation refers to the minimum yield strength of the material, which is 275 N/mm².
Mechanical properties of welded steel tube E275 are determined by various tests that are performed on the material. These tests include tensile strength, yield strength, elongation, impact strength, and hardness.
Tensile strength is the maximum stress that a material can withstand before it breaks. The tensile strength of welded steel tube E275 is typically between 410 and 580 N/mm², depending on the thickness of the tube and the welding process used.
Yield strength is the stress at which a material begins to deform permanently. The yield strength of welded steel tube E275 is typically around 275 N/mm², which is the minimum value required by the EN 10305-3 standard.
Elongation is the amount of deformation that a material undergoes before it breaks. The elongation of welded steel tube E275 is typically between 22% and 25%, depending on the thickness of the tube and the welding process used.
Impact strength is the ability of a material to resist fracture under impact loading. The impact strength of welded steel tube E275 is typically around 20 J at room temperature.
Hardness is the resistance of a material to indentation or scratching. The hardness of welded steel tube E275 is typically between 120 and 160 HV, depending on the thickness of the tube and the welding process used.
In conclusion, welded steel tube E275 has good mechanical properties, including high tensile and yield strength, good elongation and impact strength, and moderate hardness. These properties make it suitable for use in a wide range of applications, including construction, automotive, and mechanical engineering.
 Inspection and testing 
Inspection and testing are critical steps in the production of welded steel tube E275, as they help ensure that the material meets the required standards and specifications. The following are the typical methods used for inspection and testing of welded steel tube E275 according to the EN 10305-3 standard:
1. Visual Inspection: This is a basic inspection method that involves visually inspecting the welded steel tube for defects such as cracks, porosity, and incomplete penetration.
2. Dimensional Inspection: This method involves measuring the outside diameter, wall thickness, and length of the welded steel tube to ensure they meet the specified tolerances.
3. Ultrasonic Testing: This is a non-destructive testing method that uses high-frequency sound waves to detect internal defects such as cracks, inclusions, and voids in the welded steel tube.
4. Eddy Current Testing: This is another non-destructive testing method that uses electromagnetic induction to detect surface and subsurface defects in the welded steel tube.
5. Tensile Testing: This is a destructive testing method that involves pulling a sample of the welded steel tube until it breaks to determine its tensile strength, yield strength, and elongation.
6. Charpy Impact Testing: This is a destructive testing method that involves striking a notched sample of the welded steel tube with a pendulum to determine its impact strength.
7. Hardness Testing: This involves measuring the hardness of the welded steel tube using a hardness tester to ensure it meets the specified range.
All of these testing methods help ensure that the welded steel tube E275 meets the required standards and specifications. In addition, the EN 10305-3 standard requires that the manufacturer provides a test report to the customer, which includes the results of the inspection and testing carried out on the welded steel tube.
Pressure and Temperature Ratings
The pressure rating and temperature range for welded steel tube E275, according to the EN 10305-3 standard, depend on several factors, including the size, thickness, and material of the tube, as well as the application for which it is used.
Pressure Rating:
The pressure rating for welded steel tube E275 is determined by the wall thickness of the tube, and it is calculated based on the Barlow's formula, which takes into account the allowable stress of the material, the outside diameter, and the wall thickness of the tube.
The EN 10305-3 standard does not provide specific pressure ratings for welded steel tube E275, but it provides general guidelines for calculating the pressure rating based on the tube dimensions and the material properties. As a general rule, the pressure rating of welded steel tube E275 ranges from 20 bar to 1000 bar, depending on the size and thickness of the tube.
Temperature Range:
The temperature range for welded steel tube E275 is also dependent on the application and the material properties. The EN 10305-3 standard does not provide specific temperature limits for welded steel tube E275, but it provides guidelines for the selection of the appropriate material based on the maximum operating temperature of the application.
The maximum operating temperature of welded steel tube E275 depends on the material properties, including the thermal conductivity, coefficient of thermal expansion, and specific heat capacity. As a general rule, welded steel tube E275 can be used in applications where the maximum operating temperature does not exceed 300°C.
In conclusion, the pressure rating and temperature range for welded steel tube E275, EN 10305-3, are dependent on several factors, including the size, thickness, and material of the tube, as well as the application for which it is used. It is important to consider these factors when selecting welded steel tube E275 for a specific application to ensure its safe and efficient operation.

 
Surface Treatment
The surface treatment of welded steel tube E275, according to the EN 10305-3 standard, is an important step in ensuring the durability and longevity of the tube. The following are the typical surface treatments used for welded steel tube E275:
1. Phosphating: This is a chemical process that involves treating the surface of the welded steel tube with a phosphate solution to improve its corrosion resistance and to provide a good base for subsequent coatings. Phosphating is a common surface treatment for welded steel tube E275.
2. Galvanizing: This is a process that involves coating the surface of the welded steel tube with a layer of zinc to protect it from corrosion. Galvanizing is an effective surface treatment for welded steel tube E275 used in outdoor applications.
3. Painting: This is a process that involves applying a coat of paint to the surface of the welded steel tube to improve its appearance and to provide protection against corrosion. Painting is a common surface treatment for welded steel tube E275 used in indoor applications.
4. Powder Coating: This is a process that involves electrostatically applying a dry powder to the surface of the welded steel tube and then baking it to create a durable and attractive finish. Powder coating is a common surface treatment for welded steel tube E275 used in a wide range of applications.
5. Anodizing: This is a process that involves treating the surface of the welded steel tube with an electrolytic solution to create a layer of oxide that provides protection against corrosion and improves its appearance. Anodizing is a surface treatment used for welded steel tube E275 in specialized applications.
The choice of surface treatment for welded steel tube E275 depends on the application and the desired level of corrosion resistance and appearance. It is important to select the appropriate surface treatment to ensure the welded steel tube E275 provides long-lasting performance in the intended application.

 
Standard marking for steel tubes
The standard marking of welded steel tube E275, according to the EN 10305-3 standard, is required to provide information about the material and manufacturing process used to produce the tube. The following information is typically included in the standard marking:
1. Manufacturer's name or trademark
2. Tube designation: Welded steel tube E275
3. Manufacturing standard: EN 10305-3
4. Material designation: E275
5. Dimensions: outer diameter (OD), wall thickness (WT), and length (L)
6. Heat number or batch number: to trace the tube's manufacturing process
7. Inspection mark: to indicate that the tube has passed the required inspection tests
8. Additional symbols, such as "CE" marking or country of origin
The standard marking of welded steel tube E275 is usually applied to the tube surface using paint, ink, or a label. The marking is typically placed in a location that is easily visible and legible.
The standard marking of welded steel tube E275 is important because it provides essential information about the tube's material, manufacturing process, and dimensions. This information is critical for selecting the appropriate tube for a specific application and for ensuring that the tube meets the required standards and regulations.
Standard packing for steel Tubes
The standard packing of welded steel tube E275, according to the EN 10305-3 standard, is an important aspect of ensuring the safe transportation and storage of the tube. The following are the typical packing methods used for welded steel tube E275:
1. Wooden Crates: The welded steel tube E275 is packed into wooden crates to protect it from external damage during transportation. The wooden crates are designed to withstand the weight of the tubes and to protect them from moisture, dust, and other contaminants.
2. Bundles with Steel Straps: The welded steel tube E275 is bundled together with steel straps to keep them secure during transportation. The bundles are designed to prevent the tubes from shifting or rolling during transit and to protect them from damage.
3. Plastic Caps and End Protectors: The ends of the welded steel tube E275 are typically covered with plastic caps or end protectors to prevent damage to the ends of the tube during handling and transportation. The plastic caps and end protectors also help to prevent moisture and other contaminants from entering the tube.
4. Labels: Each bundle or crate of welded steel tube E275 is typically labeled with information about the material, dimensions, and other important details to ensure easy identification and tracking.
The standard packing of welded steel tube E275 is important because it helps to protect the tube from damage during transportation and storage. It also ensures that the tube is delivered to the customer in good condition, ready for use in their application.
Supplier
TAP Viet nam International Investment Joint Stock Company (TAP Viet nam) is a leading supplier of welded steel tube E275, according to the EN 10305-3 standard. The company offers high-quality welded steel tube E275 in a wide range of sizes and specifications to meet the needs of various industries.
Welded steel tube E275 is widely used in many applications, such as mechanical and structural applications, automotive parts, and construction. It is a low carbon steel tube with a minimum yield strength of 275 N/mm2 and is characterized by excellent weldability, formability, and machinability. Welded steel tube E275 is also known for its good resistance to corrosion and mechanical properties, making it a reliable choice for many applications.
TAP Viet nam is committed to providing high-quality welded steel tube E275 that meets the highest standards of quality and safety. The company's welded steel tube E275 is manufactured using advanced production technologies and undergoes rigorous testing and inspection to ensure compliance with the EN 10305-3 standard.
TAP Viet nam offers welded steel tube E275 in a variety of sizes and specifications to meet the diverse needs of its customers. The company also provides customized solutions to meet specific requirements, such as different lengths, wall thicknesses, and surface treatments.
In addition to its high-quality products, TAP Viet nam also offers exceptional customer service and support. The company has a team of knowledgeable and experienced professionals who can provide technical assistance and guidance on selecting the right welded steel tube E275 for a particular application. TAP Viet nam is also committed to providing on-time delivery, competitive pricing, and flexible payment terms.
Overall, TAP Viet nam International Investment Joint Stock Company is a trusted supplier of welded steel tube E275, EN 10305-3. The company's commitment to quality, safety, and customer service makes it a reliable choice for businesses and industries that require high-quality welded steel tubes for their operations.

 

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Sizes and diameter tolerances Welded cold sized Steel tubes EN 10305-3
EN 10305-3 is a European standard that specifies the technical delivery conditions for welded cold-sized steel tubes for precision applications. These tubes are typically used in the mechanical engineering and automotive industries, where high precision and reliability are required.
The standard defines several requirements for the sizes and diameter tolerances of the tubes. These include:
1. Nominal sizes: The nominal sizes of the tubes range from 6mm to 200mm, with wall thicknesses from 0.5mm to 10mm.
2. Dimensions: The standard specifies the dimensions of the tubes, including the outside diameter, wall thickness, and length. The outside diameter of the tubes ranges from 6mm to 200mm, with a tolerance of +/- 0.08mm. The wall thickness ranges from 0.5mm to 10mm, with a tolerance of +/- 10%.
3. Ovality: The standard specifies the ovality of the tubes, which is the difference between the maximum and minimum diameter of the tube divided by the nominal diameter. The ovality tolerance ranges from 0.4% to 1.0%, depending on the diameter and wall thickness of the tube.
4. Straightness: The standard specifies the straightness of the tubes, which is the maximum deviation from a straight line over the length of the tube. The straightness tolerance ranges from 0.15% to 0.25% depending on the diameter and wall thickness of the tube.
5. Length: The standard specifies the length of the tubes, which can be cut to specific lengths or supplied in random lengths. The tolerance on length is +/- 500mm or +/- 3% of the total length, whichever is greater.
6. Surface finish: The standard specifies the surface finish of the tubes, which must be free from defects and have a smooth, clean surface.
In summary, the EN 10305-3 standard defines the sizes and diameter tolerances for welded cold-sized steel tubes for precision applications, including nominal sizes, dimensions, ovality, straightness, length, and surface finish. These specifications ensure that the tubes meet the high precision and reliability requirements of the mechanical engineering and automotive industries.
Sizes and diameter tolerances Welded Steel tubes EN 10305-3
Dimensions in millimetres
Outside diameter D
and tolerances
Wall thickness T (mm)
0.6 0.8 1 1.2 1.5 1.8 2 2.2 2.5 3 3.5 4 4.5 5 5.5 6
Mass per unit length (kg/m)
6 ±0,12 0.080 0.103 0.123                          
8 0.109 0.142 0.173 0.201 0.240                      
10 0.139 0.182 0.222 0.260 0.314                      
12 0.169 0.221 0.271 0.320 0.388 0.453 0.493                  
15 0.213 0.280 0.345 0.408 0.499 0.586 0.641 0.694                
16 0.228 0.300 0.370 0.438 0.536 0.630 0.691 0.749                
18 0.257 0.339 0.419 0.497 0.610 0.719 0.789 0.857 0.956              
19 0.272 0.359 0.444 0.527 0.647 0.764 0.838 0.911 1.02 1.18            
20 ±0,15 0.287 0.379 0.469 0.556 0.684 0.808 0.888 0.966 1.08 1.26            
22 0.317 0.418 0.518 0.616 0.758 0.897 0.986 1.07 1.20 1.41            
25 0.361 0.477 0.592 0.704 0.869 1.03 1.13 1.24 1.39 1.63            
28 0.405 0.537 0.666 0.793 0.980 1.16 1.28 1.40 1.57 1.85 2.11          
30 0.435 0.576 0.715 0.852 1.05 1.25 1.38 1.51 1.70 2.00 2.29          
32 ±0,20   0.616 0.765 0.911 1.13 1.34 1.48 1.62 1.82 2.15 2.46          
35     0.838 1.00 1.24 1.47 1.63 1.78 2.00 2.37 2.72          
38     0.912 1.09 1.35 1.61 1.78 1.94 2.19 2.59 2.98 3.35        
40     0.962 1.15 1.42 1.70 1.87 2.05 2.31 2.74 3.15 3.55        
42     1.01 1.21 1.50 1.78 1.97 2.16 2.44 2.89 3.32 3.75        
42.4     1.02 1.22 1.51 1.80 1.99 2.18 2.46 2.91 3.36 3.79        
44 ±0,25     1.06 1.27 1.57 1.87 2.07 2.27 2.56 3.03 3.50 3.95        
45     1.09 1.30 1.61 1.92 2.12 2.32 2.62 3.11 3.58 4.04        
48.3     1.17 1.39 1.73 2.06 2.28 2.50 2.82 3.35 3.87 4.37 4.86      
50     1.21 1.44 1.79 2.14 2.37 2.59 2.93 3.48 4.01 4.54 5.05      
51       1.47 1.83 2.18 2.42 2.65 2.99 3.55 4.10 4.64 5.16      
55 ±0,30       1.59 1.98 2.36 2.61 2.86 3.24 3.85 4.45 5.03 5.60      
57       1.65 2.05 2.45 2.71 2.97 3.36 4.00 4.62 5.23 5.83      
60       1.74 2.16 2.58 2.86 3.14 3.55 4.22 4.88 5.52 6.16 6.78 7.39  
63.5       1.84 2.29 2.74 3.03 3.33 3.76 4.48 5.18 5.87 6.55 7.21 7.87  
70 ±0,35       2.04 2.53 3.03 3.35 3.68 4.16 4.96 5.74 6.51 7.27 8.01 8.75  
76       2.21 2.76 3.29 3.65 4.00 4.53 5.40 6.26 7.10 7.93 8.75 9.56  
80 ±0,40       2.33 2.90 3.47 3.85 4.22 4.78 5.70 6.60 7.50 8.38 9.25 10.1  
89         3.24 3.87 4.29 4.71 5.33 6.36 7.38 8.38 9.38 10.4 11.3 12.3
90         3.27 3.92 4.34 4.76 5.39 6.44 7.47 8.48 9.49 10.5 11.5 12.4
100 ±0,50         3.64 4.36 4.83 5.31 6.01 7.18 8.33 9.47 10.6 11.7 12.8 13.9
101.6         3.70 4.43 4.91 5.39 6.11 7.29 8.47 9.63 10.8 11.9 13.0 14.1
108 ±0,60         3.94 4.71 5.23 5.74 6.50 7.77 9.02 10.3 11.5 12.7 13.9 15.1
114           4.98 5.52 6.07 6.87 8.21 9.54 10.9 12.2 13.4 14.7 16.0
120           5.25 5.82 6.39 7.24 8.66 10.1 11.4 12.8 14.2 15.5 16.9
127 ±0,8           5.56 6.17 6.77 7.68 9.17 10.7 12.1 13.6 15.0 16.5 17.9
133           5.82 6.46 7.10 8.05 9.62 11.2 12.7 14.3 15.8 17.3 18.8
139.7           6.12 6.79 7.46 8.46 10.1 11.8 13.4 15.0 16.6 18.2 19.8
159 ±1,0           6.98 7.74 8.51 9.65 11.5 13.4 15.3 17.1 19.0 20.8 22.6
168           7.38 8.19 9.00 10.2 12.2 14.2 16.2 18.1 20.1 22.0 24.0
193.7               10.4 11.8 14.1 16.4 18.7 21.0 23.3 25.5 27.8
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