Seamless Steel tube E235, EN 10305-4

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: Seamless Steel tube E235, EN 10305-4
The alternative name or alias of a product: Seamless Steel pipe E235, EN 10305-4 SMLS tube E235, EN 10305-4
Product Description:
Seamless cold drawn tubes for hydraulic and pneumatic power system
• Material: E235, Steel Number 1.0308
• Type: Seamless (SMLS)
•Standard EN 10305-4
• Size:
• Outer Diameter (OD): OD4 to OD80
• Wall Thickness (WT): 0.5mm to 12.5mm
• 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.
E235 1.0308 0.17 0.35 1.2 0.025 0.015 0.015
Mechanical Properties
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. This steel tube is designed for use in hydraulic and pneumatic systems, as well as in other industrial applications where high precision and reliability are required. The E235 designation refers to the chemical composition of the steel, which is made up of primarily carbon and manganese, with trace amounts of other elements.
One of the most important mechanical properties of Seamless Steel Tube E235 is its tensile strength, which is the maximum amount of stress that the steel tube can withstand before it fails. The tensile strength of E235 steel is typically between 440 and 570 MPa (megapascals), depending on the manufacturing process and other factors.
Another important mechanical property of Seamless Steel Tube E235 is its yield strength, which is the amount of stress that the steel can withstand without experiencing permanent deformation. The yield strength of E235 steel is typically between 235 and 355 MPa, depending on the manufacturing process and other factors.
The hardness of Seamless Steel Tube E235 is another important mechanical property. Hardness is a measure of the resistance of the steel to indentation or scratching, and it can be used to assess the strength and durability of the material. The hardness of E235 steel typically ranges between 120 and 180 HV (Vickers hardness).
In addition to these mechanical properties, Seamless Steel Tube E235 also exhibits good ductility, which is the ability of the material to deform under stress without cracking or breaking. This ductility is important in applications where the steel tube may need to bend or flex without failing.
Overall, Seamless Steel Tube E235 is a high-quality precision steel tube with excellent mechanical properties that make it ideal for use in a wide range of industrial applications. Its high strength, hardness, and ductility make it particularly well-suited for use in hydraulic and pneumatic systems where reliability and precision are critical.
 Inspection and testing 
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. To ensure that the steel tube meets the required specifications and is suitable for its intended use, it undergoes various inspection and testing procedures. These procedures include both non-destructive and destructive testing methods.
One of the primary inspection procedures for Seamless Steel Tube E235 is visual inspection. During visual inspection, the surface of the steel tube is inspected for any defects, such as cracks, corrosion, or other surface imperfections. The dimensions of the tube are also checked to ensure that they meet the required tolerances.
Another important inspection method for Seamless Steel Tube E235 is ultrasonic testing. This non-destructive testing method uses high-frequency sound waves to detect any internal defects, such as voids, cracks, or inclusions, that may not be visible on the surface of the steel tube. Ultrasonic testing can be performed using either immersion or contact methods, depending on the size and shape of the tube.
In addition to visual inspection and ultrasonic testing, Seamless Steel Tube E235 may also undergo destructive testing methods, such as tensile testing and hardness testing. Tensile testing involves subjecting a sample of the steel tube to a controlled amount of tension to determine its tensile strength, yield strength, and elongation. Hardness testing measures the resistance of the steel to indentation or scratching and can be used to assess the strength and durability of the material.
Other inspection and testing procedures that may be performed on Seamless Steel Tube E235 include eddy current testing, magnetic particle inspection, and radiographic testing. These methods are used to detect any surface or internal defects that may affect the performance or safety of the steel tube.
Overall, the inspection and testing of Seamless Steel Tube E235 is a critical step in ensuring that the steel tube meets the required specifications and is suitable for its intended use. By using a combination of non-destructive and destructive testing methods, manufacturers can identify any defects or weaknesses in the steel tube and take appropriate measures to address them before the tube is used in an industrial application.

 
Pressure and Temperature Ratings
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. The pressure rating and temperature range for this steel tube depend on several factors, including its dimensions, wall thickness, and intended use.
The pressure rating of Seamless Steel Tube E235 is typically expressed in terms of its maximum allowable working pressure (MAWP). The MAWP is the maximum pressure that the tube can withstand without failing, and it is determined based on factors such as the tube's dimensions, wall thickness, and material properties.
The temperature range for Seamless Steel Tube E235 depends on its intended use and the materials it will be exposed to. In general, this steel tube is suitable for use in a wide range of temperatures, from ambient to high temperatures, depending on the specific application.
The pressure rating and temperature range of Seamless Steel Tube E235 can also be affected by the presence of any additional components, such as fittings or connectors, that are used in conjunction with the tube. These components can create additional stress points or introduce temperature variations that must be taken into account when determining the maximum allowable pressure and temperature for the tube.
In general, Seamless Steel Tube E235 is well-suited for use in hydraulic and pneumatic systems, as well as in other industrial applications where high precision and reliability are required. To ensure that the tube is used safely and effectively, it is important to carefully consider its pressure rating and temperature range, as well as any additional factors that may impact its performance in a specific application.
Surface Treatment
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. To improve its performance and longevity, the steel tube may undergo various surface treatment processes.
One of the most common surface treatment methods for Seamless Steel Tube E235 is phosphating. Phosphating involves applying a thin layer of phosphate coating to the surface of the tube, which helps to improve its corrosion resistance and provides a good base for subsequent coating or painting processes.
Another common surface treatment method for Seamless Steel Tube E235 is galvanizing. Galvanizing involves coating the surface of the tube with a layer of zinc, which provides excellent corrosion resistance and can also improve the tube's durability and longevity.
Electroplating is another surface treatment method that may be used on Seamless Steel Tube E235. This process involves applying a thin layer of metal, such as nickel or chromium, to the surface of the tube using an electric current. Electroplating can improve the tube's resistance to wear and corrosion, as well as enhance its appearance.
Other surface treatment methods that may be used on Seamless Steel Tube E235 include black oxide coating, anodizing, and powder coating. These methods are often used to improve the tube's appearance or to provide additional protection against wear, corrosion, or other forms of damage.
Overall, the surface treatment of Seamless Steel Tube E235 can significantly impact its performance and longevity. By carefully selecting the appropriate surface treatment method for a specific application, manufacturers can ensure that the tube is well-suited for its intended use and will provide reliable performance over an extended period of time.
Standard marking for steel tubes
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. To ensure that the tube meets the required specifications and can be identified and tracked throughout its lifecycle, it is typically marked with standard markings that provide important information about its properties and manufacturing history.
The standard markings that are applied to Seamless Steel Tube E235 typically include the following information:
1. Manufacturer's name or logo: This indicates the manufacturer of the steel tube and helps to identify its origin.
2. Standard designation: This indicates the standard that the steel tube was manufactured to, in this case, EN 10305-4.
3. Steel grade: This indicates the type of steel that was used to manufacture the tube, in this case, E235.
4. Size and dimensions: This includes information about the outside diameter, wall thickness, and length of the tube.
5. Heat number: This is a unique identifier that is assigned to each batch of steel during the manufacturing process. It provides important information about the materials used to manufacture the tube, including the chemical composition and mechanical properties.
6. Traceability code: This is a unique code that is used to track the steel tube throughout its lifecycle, from manufacturing to installation and beyond. It provides important information about the tube's manufacturing history, including the date of manufacture and any quality control checks that were performed.
7. Additional markings: Depending on the specific application and requirements, additional markings may be applied to the steel tube, such as pressure rating, temperature range, or surface treatment information.
Overall, the standard markings applied to Seamless Steel Tube E235 provide important information about its properties, manufacturing history, and suitability for specific applications. By carefully reviewing these markings, manufacturers, distributors, and end-users can ensure that the tube meets the required specifications and will provide reliable performance over an extended period of time.
Standard packing for steel Tubes
Seamless Steel Tube E235 is a precision steel tube that is manufactured according to the EN 10305-4 standard. To ensure that the tube is transported and stored safely and without damage, it is typically packed in a way that provides adequate protection against environmental factors and mechanical stresses.
The standard packing for Seamless Steel Tube E235 typically involves the following steps:
1. Cleaning: Before packing, the steel tube is typically cleaned to remove any debris or contaminants that may be present on the surface.
2. Inspection: The tube is inspected to ensure that it meets the required specifications and is free from any defects or damage.
3. Bundling: The steel tube is then bundled together with other tubes of similar size and dimensions. The bundles are typically secured using steel straps or other fastening devices to prevent movement during transport.
4. Wrapping: The bundled tubes are then wrapped with a protective material, such as plastic or paper, to provide additional protection against moisture, dust, and other environmental factors.
5. Marking: The bundles are then marked with the appropriate standard markings, as described in the previous answer, to provide important information about the tube's properties and manufacturing history.
6. Storing and transporting: The bundled and wrapped steel tubes are then stored and transported to their destination in a way that minimizes the risk of damage or other types of mechanical stress.
Overall, the standard packing for Seamless Steel Tube E235 is designed to ensure that the tube is transported and stored safely and without damage, and that it can be easily identified and tracked throughout its lifecycle. By carefully following these packing procedures, manufacturers, distributors, and end-users can ensure that the tube meets the required specifications and will provide reliable performance over an extended period of time.
Supplier
TAP Viet nam International Investment Joint Stock Company (TAP Viet nam) is a leading supplier of high-quality Seamless Steel Tube E235, manufactured according to the EN 10305-4 standard. With years of experience in the steel industry and a commitment to providing exceptional customer service, TAP Viet nam has established itself as a trusted partner for businesses across a wide range of industries.
Seamless Steel Tube E235 is a precision steel tube that is widely used in applications where high accuracy, reliability, and performance are essential. It is commonly used in hydraulic and pneumatic systems, as well as in the automotive, construction, and energy industries.
TAP Viet nam's Seamless Steel Tube E235 is manufactured using advanced technology and equipment to ensure that it meets the highest standards of quality and performance. The tube is made from high-quality steel, with precise dimensions and wall thicknesses that are carefully controlled during the manufacturing process. It is also subjected to rigorous testing and inspection procedures to ensure that it meets the required specifications and is free from defects or damage.
One of the key advantages of TAP Viet nam's Seamless Steel Tube E235 is its excellent mechanical properties. It has a high tensile strength, good yield strength, and excellent elongation, making it well-suited for applications where durability and reliability are essential. It also has good corrosion resistance, which ensures that it can withstand harsh environmental conditions without degradation.
In addition to its exceptional performance characteristics, TAP Viet nam's Seamless Steel Tube E235 is also highly customizable. It can be supplied in a wide range of sizes and dimensions, and can be tailored to meet the specific needs of each customer. TAP Viet nam's team of experienced engineers and technicians work closely with customers to understand their requirements and develop customized solutions that meet their unique needs.
TAP Viet nam is committed to providing exceptional customer service, and has built a reputation for reliability, responsiveness, and flexibility. The company's team of experts is always available to provide technical support, answer questions, and provide guidance on the best solutions for each customer's needs. TAP Viet nam also offers flexible delivery options and competitive pricing, making it easy and affordable for businesses of all sizes to access high-quality Seamless Steel Tube E235.
Overall, TAP Viet nam International Investment Joint Stock Company is a leading supplier of high-quality Seamless Steel Tube E235, manufactured according to the EN 10305-4 standard. With a focus on quality, reliability, and exceptional customer service, TAP Viet nam is the ideal partner for businesses across a wide range of industries.

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Sizes and tolerances Steel Tubes EN 10305-4
EN 10305-4 is a standard that specifies the technical delivery conditions for seamless cold-drawn steel tubes of circular cross-section used in hydraulic and pneumatic power systems. The standard provides specific requirements for the dimensions and tolerances of the steel tubes.
Dimensions refer to the physical characteristics of the steel tube, such as its outer diameter, wall thickness, and length. EN 10305-4 specifies the permissible tolerances for these dimensions. The outer diameter (OD) of the tube can range from 4mm to 250mm, with tolerances depending on the size of the tube. For example, tubes with an OD of less than 10mm have a tolerance of +/- 0.08mm, while tubes with an OD of 150mm to 250mm have a tolerance of +/- 1.5%.
The wall thickness of the tube is also specified in the standard, with tolerances depending on the size of the tube and the type of production method used (e.g. cold drawn or cold rolled). For example, tubes with a wall thickness of less than 3mm have a tolerance of +/- 10% of the nominal wall thickness, while tubes with a wall thickness greater than 3mm have a tolerance of +/- 0.15mm.
The length of the tube is specified in the standard as well, with a maximum length of 8 meters. The standard also specifies the permissible deviation from the specified length, which is +/- 500mm for tubes up to 7 meters in length and +/- 1% of the length for tubes longer than 7 meters.
Tolerances refer to the acceptable variations from the specified dimensions of the steel tube. In addition to the tolerances specified for the dimensions, EN 10305-4 also specifies tolerances for straightness, ovality, and surface roughness.
Straightness refers to the deviation of the tube from a straight line. The standard specifies the maximum permissible deviation from straightness as 0.3mm per meter of tube length.
Ovality refers to the deviation of the tube's cross-section from a circular shape. The standard specifies the maximum permissible ovality as 1% of the OD for tubes with an OD of up to 100mm, and 0.5% of the OD for tubes with an OD greater than 100mm.
Surface roughness refers to the texture of the tube's surface, which can affect its ability to form a tight seal in hydraulic and pneumatic systems. The standard specifies the maximum permissible roughness as 0.4 micrometers for tubes with an OD of up to 40mm, and 0.8 micrometers for tubes with an OD greater than 40mm.
Overall, the dimensions and tolerances specified in EN 10305-4 ensure that the steel tubes meet the necessary requirements for use in hydraulic and pneumatic power systems, where precision and reliability are essential.
Sizes and tolerances Steel Tubes EN 10305-4
Specified outside diameter
D with tolerance 
Specified inside diameter d
with tolerance
Specified wall thickness T with tolerance 
4 ±0,08 3 ±0,15 0.5 ±0,10
2 1 ±0,10
5 ±0,08 3.5 ±0,15 0.75 ±0,10
3 1 ±0,10
6 ±0,08 4 ±0,12 1 ±0,10
3 ±0,15 1.5 ±0,15
2 2 ±0,20
8 ±0,08 6 ±0,10 1 ±0,10
5 1.5 ±0,15
4 ±0,15 2 ±0,20
3 2.5 ±0,25
10 ±0,08 8 ±0,08 1 ±0,10
7 ±0,12 1.5 ±0,15
6 ±0,15 2 ±0,20
5 2.5 ±0,25
12 ±0,08 10 ±0,08 1 ±0,10
9 ±0,10 1.5 ±0,15
8 ±0,12 2 ±0,20
7 ±0,15 2.5 ±0,25
6 3 ±0,30
14 ±0,08 12 ±0,08 1 ±0,10
11 1.5 ±0,15
10 ±0,10 2 ±0,20
9 ±0,12 2.5 ±0,25
8 ±0,15 3 ±0,30
15 ±0,08 13 ±0,08 1 ±0,10
12 1.5 ±0,15
11 ±0,10 2 ±0,20
10 ±0,12 2.5 ±0,25
9 ±0,15 3 ±0,30
16 ±0,08 14 ±0,08 1 ±0,10
13 1.5 ±0,15
12 ±0,10 2 ±0,20
11 ±0,12 2.5 ±0,25
10 ±0,15 3 ±0,30
18 ±0,08 16 ±0,08 1 ±0,10
15 1.5 ±0,15
14 2 ±0,20
13 ±0,15 2.5 ±0,25
12 3 ±0,30
20 ±0,08 17 ±0,08 1.5 ±0,15
16 2 ±0,20
15 ±0,15 2.5 ±0,25
14 3 ±0,30
13 3.5 ±0,35
12 4 ±0,40
22 ±0,08 20 ±0,08 1 ±0,10
19 1.5 ±0,15
18 2 ±0,20
17 2.5 ±0,25
16 ±0,15 3 ±0,30
15 3.5 ±0,35
14 4 ±0,40
25 ±0,08 22 ±0,08 1.5 ±0,15
21 2 ±0,20
20 2.5 ±0,25
19 ±0,15 3 ±0,30
17 4 ±0,40
16 4.5 ±0,45
15 5 ±0,50
28 ±0,08 25 ±0,08 1.5 ±0,15
24 2 ±0,20
23 2.5 ±0,25
22 ±0,15 3 ±0,30
20 4 ±0,40
18 5 ±0,50
30 ±0,08 26 ±0,08 2 ±0,20
25 2.5 ±0,25
24 ±0,15 3 ±0,30
22 4 ±0,40
20 5 ±0,50
18 6 ±0,60
35 ±0,15 31 ±0,15 2 ±0,20
30 2.5 ±0,25
29 3 ±0,30
27 4 ±0,40
25 5 ±0,50
23 6 ±0,60
38 ±0,15 34 ±0,15 2 ±0,20
33 2.5 ±0,25
32 3 ±0,30
30 4 ±0,40
28 5 ±0,50
26 6 ±0,60
24 7 ±0,70
22 8 ±0,80
42 ±0,20 38 ±0,20 2 ±0,20
36 3 ±0,30
34 4 ±0,40
32 5 ±0,50
30 6 ±0,60
26 8 ±0,80
50 ±0,20 42 ±0,20 4 ±0,40
40 5 ±0,50
38 6 ±0,60
34 8 ±0,80
32 9 ±0,90
30 10 ±1,00
55 ±0,25 47 ±0,25 4 ±0,40
43 6 ±0,60
39 8 ±0,80
35 10 ±1,00
60 ±0,25 50 ±0,25 5 ±0,50
44 8 ±0,80
40 10 ±1,00
35 12.5 ±1,25
70 ±0,30 60 ±0,30 5 ±0,50
54 8 ±0,80
50 10 ±1,00
45 12.5 ±1,25
80 ±0,35 68 ±0,35 6 ±0,60
64 8 ±0,80
60 10 ±1,00
55 12.5 ±1,25
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