ERW steel pipe
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ERW steel pipe /round tube
1. standard :API 5L GB/T9711.1 GB/T9711.2
2. material : Q195
3. MOQ :10 MT
4. technique : cold rolled
product name : ERW steel pipe /round tube
| Description | outer diameterr:14mm-80mm thickness:0.4mm-2.0mm length:5800 material:Q195 pipe surface: oiled smooth |
| Main usage | oil and water or other liquid transportation, construction,piling and other project |
| Origin | Tianjin,China |
| Produce technique | ERW steel pipe |
| Text certificate | SGS, BV, ISO9001 |
| Delivery time | 20days after receipt of the deposit |
| Main market | middle east, south America ,southest Asia and other parts of the world |
- Q: What are the safety regulations for working with steel pipes?
- The safety regulations for working with steel pipes typically include wearing appropriate personal protective equipment (PPE), such as gloves, safety glasses, and steel-toed boots, to prevent injuries. Workers should also receive training on proper handling and lifting techniques to avoid strains and sprains. Additionally, the use of proper tools and equipment, such as pipe cutters and clamps, is essential for safe operations. It is important to follow procedures for securing pipes to prevent them from rolling or falling. Finally, workers should be aware of potential hazards, such as sharp edges and hot surfaces, and practice good housekeeping to minimize slips, trips, and falls.
- Q: How are steel pipes classified based on their schedule?
- Steel pipes are classified based on their schedule, which refers to the thickness of the pipe wall. The schedule classification is denoted by a number, such as 10, 20, 40, 80, etc., with higher numbers indicating thicker walls.
- Q: How are steel pipes graded?
- Steel pipes are graded based on several factors to determine their quality and suitability for specific applications. The grading system for steel pipes typically includes parameters such as the chemical composition, mechanical properties, manufacturing method, and testing standards. 1. Chemical composition: Steel pipes are graded based on the elements present in their composition. This includes the amount of carbon, manganese, phosphorus, sulfur, and other alloying elements. The chemical composition greatly influences the pipe's strength, corrosion resistance, and other properties. 2. Mechanical properties: The mechanical properties of steel pipes are crucial for determining their strength, flexibility, and resistance to pressure and temperature. These properties include tensile strength, yield strength, elongation, hardness, and impact toughness. Pipes with higher mechanical properties are generally graded higher. 3. Manufacturing method: Steel pipes can be manufactured using various methods, such as seamless, welded, or ERW (Electric Resistance Welding). The manufacturing method affects the pipe's integrity, dimensional accuracy, and overall quality. Seamless pipes, for example, are considered to have higher quality due to their uniformity and absence of weld seams. 4. Testing standards: Steel pipes are graded based on their adherence to specific testing standards. These standards ensure that the pipes meet the required quality criteria and are suitable for their intended applications. Common testing standards include ASTM (American Society for Testing and Materials), API (American Petroleum Institute), and EN (European Norms). Based on these factors, steel pipes are often graded using alphanumeric codes or specifications. For instance, pipes used in oil and gas industry may be graded as API 5L (American Petroleum Institute) or pipes used for structural purposes may be graded as ASTM A500 (American Society for Testing and Materials). In conclusion, steel pipes are graded based on their chemical composition, mechanical properties, manufacturing method, and adherence to testing standards. These grades help customers and manufacturers in selecting the appropriate pipes for specific applications, ensuring safety, durability, and efficiency in various industries.
- Q: What is the difference between internal coating and external lining of steel pipes?
- The main difference between internal coating and external lining of steel pipes lies in their purpose and location. Internal coating refers to the application of protective materials on the inner surface of the steel pipe, primarily to prevent corrosion, improve flow efficiency, and maintain the quality of transported fluids. On the other hand, external lining involves applying protective materials to the outer surface of the steel pipe, mainly for corrosion resistance, insulation, and protection against external elements. Therefore, while internal coating focuses on the interior protection and performance of the pipe, external lining shields the pipe from environmental factors and external damage.
- Q: Are steel pipes affected by magnetic fields?
- Yes, steel pipes can be affected by magnetic fields. Steel is a ferromagnetic material, which means it can be magnetized and influenced by magnetic fields.
- Q: Are steel pipes suitable for potable water applications?
- Yes, steel pipes are suitable for potable water applications. Steel pipes are commonly used for transporting water in various industries and municipal water systems. They are known for their durability, strength, and resistance to corrosion, making them a reliable choice for potable water systems. Steel pipes also have the advantage of being able to withstand high pressure and temperature conditions, making them suitable for both hot and cold water applications. Additionally, steel pipes can be easily welded, ensuring leak-free connections. However, it is important to note that the quality of the steel used and proper maintenance are crucial factors in ensuring the safety and suitability of steel pipes for potable water applications. Regular inspection and maintenance should be done to prevent corrosion and ensure the integrity of the pipes.
- Q: What is the difference between hot-dip galvanizing and electroplating of steel pipes?
- Steel pipes can be protected from corrosion using two different methods: hot-dip galvanizing and electroplating. To protect steel pipes using hot-dip galvanizing, they are immersed in a molten bath of zinc. The zinc reacts with the steel to create a strong and uniform coating that effectively prevents corrosion. This method is commonly used for outdoor applications and in harsh environments where the pipes are exposed to water or chemicals. In contrast, electroplating involves depositing a thin layer of metal, usually zinc, onto the surface of the steel pipes using an electric current. The steel pipes act as the cathode, and a zinc anode is placed in a solution containing zinc ions. The electric current causes the zinc ions to react with the steel and form a thin coating. Electroplating is often chosen for indoor applications or when aesthetics are a priority. Hot-dip galvanizing generally provides a thicker and more durable coating compared to electroplating. The hot-dip galvanized coating is several times thicker than the electroplated zinc coating, offering better corrosion protection and a longer lifespan for the pipes. The appearance of the coatings also differs. Hot-dip galvanizing results in a matte gray finish, while electroplating can give a more lustrous and shiny appearance. Cost-wise, hot-dip galvanizing is more cost-effective for larger projects because it can coat multiple pipes simultaneously. On the other hand, electroplating is usually more expensive and time-consuming, especially for larger quantities of steel pipes. Ultimately, the choice between hot-dip galvanizing and electroplating depends on the specific requirements of the project, including the intended application, environment, aesthetics, and budget constraints.
- Q: What are the different international standards for steel pipes?
- There are several different international standards for steel pipes, including the American Society for Testing and Materials (ASTM), the International Organization for Standardization (ISO), and the European Committee for Standardization (CEN). These standards define specific requirements for the manufacturing, testing, and dimensions of steel pipes to ensure their quality and compatibility for various applications.
- Q: How are steel pipes transported from the manufacturing site to the construction site?
- Steel pipes are typically transported from the manufacturing site to the construction site using various methods, including trucks, trains, and ships. These transportation modes ensure efficient and cost-effective delivery, depending on the distance and infrastructure available.
- Q: Can steel pipes be used for drainage systems?
- Yes, steel pipes can be used for drainage systems. Steel pipes are strong, durable, and resistant to corrosion, making them suitable for carrying and directing wastewater. Additionally, their smooth interior surface allows for efficient water flow, making them a reliable choice for drainage applications.
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ERW steel pipe
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
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