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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
- Details
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Carbon Seamless Pipe is a kind of steel pipe without a weld seam in the middle. Due to its unique manufacturing process and performance, it is widely used in the industrial field.
PROPERTY SORT DETAILED DESCRIPTION Core definition Hollow pipes made from carbon steel billets and formed in one go through processes such as piercing, hot rolling or cold drawing, with no welds on the pipe body Main types (by standard/material) - By standard: ASTM A106 (high temperature service), ASTM A53 (normal pressure), API 5L (pipeline transportation), JIS G3454 (Japanese standard, such as STPG38).
- By material grade: 20#, 45#, 16Mn (Q345), A106 Gr.B, API 5L Gr.B, STPG38, etc.
Key application fields - Oil and gas: main pipelines and drilling pipelines for transporting oil and gas.
- Electricity and Energy: High-temperature and high.
Pressure steam pipelines and heat exchangers for power station boilers.
- Chemical industry: Pipelines for transporting chemicals and solvents.
- Machinery and Structure: Manufacturing mechanical components such as bearings, hydraulic cylinder barrels, and automotive drive shafts.
Core advantages - High strength and pressure resistance: Seamless and uniform structure, capable of withstanding high internal pressure and external loads.
- High reliability: No weak points in weld seams, good uniformity, significantly reducing the risk of leakage.
- Economical and efficient: It can achieve a lighter design under the same strength and has a high material utilization rate.
- Strong processing and adaptability: Easy to bend and flanged, and can be customized in various shapes and sizes.
💡 Key points to note when purchasing
When making actual selections and purchases, in addition to understanding the above basic information, the following points also need to be paid attention to:
• Clarify the usage parameters:
First, it is necessary to be clear about the medium that the pipeline will convey, the working pressure, the working temperature, and the environment it is in (such as whether it is corrosive). This is the basis for choosing appropriate materials and standards (such as ASTM A106 for high-temperature working conditions).
• Pay attention to dimensions and craftsmanship:
Determine the outer diameter, wall thickness and length of the steel pipe according to the requirements. Common production processes include hot rolling (suitable for large-diameter thick-walled pipes) and cold drawing (with high dimensional accuracy and smooth surface). Different processes affect the dimensional range, accuracy and performance of steel pipes.
• Verification, certification and testing:
For critical applications, suppliers should be able to provide factory Test Certificates (MTC) and accept third-party inspections (such as SGS) to ensure that product quality complies with standards and specifications.
Carbon Seamless Pipe
Subcategory
Keyword
- Details
-
Carbon Seamless Pipe is a kind of steel pipe without a weld seam in the middle. Due to its unique manufacturing process and performance, it is widely used in the industrial field.
PROPERTY SORT DETAILED DESCRIPTION Core definition Hollow pipes made from carbon steel billets and formed in one go through processes such as piercing, hot rolling or cold drawing, with no welds on the pipe body Main types (by standard/material) - By standard: ASTM A106 (high temperature service), ASTM A53 (normal pressure), API 5L (pipeline transportation), JIS G3454 (Japanese standard, such as STPG38).
- By material grade: 20#, 45#, 16Mn (Q345), A106 Gr.B, API 5L Gr.B, STPG38, etc.
Key application fields - Oil and gas: main pipelines and drilling pipelines for transporting oil and gas.
- Electricity and Energy: High-temperature and high.
Pressure steam pipelines and heat exchangers for power station boilers.
- Chemical industry: Pipelines for transporting chemicals and solvents.
- Machinery and Structure: Manufacturing mechanical components such as bearings, hydraulic cylinder barrels, and automotive drive shafts.
Core advantages - High strength and pressure resistance: Seamless and uniform structure, capable of withstanding high internal pressure and external loads.
- High reliability: No weak points in weld seams, good uniformity, significantly reducing the risk of leakage.
- Economical and efficient: It can achieve a lighter design under the same strength and has a high material utilization rate.
- Strong processing and adaptability: Easy to bend and flanged, and can be customized in various shapes and sizes.
💡 Key points to note when purchasing
When making actual selections and purchases, in addition to understanding the above basic information, the following points also need to be paid attention to:
• Clarify the usage parameters:
First, it is necessary to be clear about the medium that the pipeline will convey, the working pressure, the working temperature, and the environment it is in (such as whether it is corrosive). This is the basis for choosing appropriate materials and standards (such as ASTM A106 for high-temperature working conditions).
• Pay attention to dimensions and craftsmanship:
Determine the outer diameter, wall thickness and length of the steel pipe according to the requirements. Common production processes include hot rolling (suitable for large-diameter thick-walled pipes) and cold drawing (with high dimensional accuracy and smooth surface). Different processes affect the dimensional range, accuracy and performance of steel pipes.
• Verification, certification and testing:
For critical applications, suppliers should be able to provide factory Test Certificates (MTC) and accept third-party inspections (such as SGS) to ensure that product quality complies with standards and specifications.
Related products
Product Consulting
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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