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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.
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
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
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
Product Description
Brief introduction
ASTM A53 WELDED PIPE
Standard: ASTM A53
Grade: GR.A, GR.B
Outside Diameter: 20 - 660mm Wall Thickness:1.3 -16 mm
Length: 5.8m, 6m, 12m or as your requirement
Surface Treatment: Painting, Oiling, Galvanized, 3LPE,3PE
Chemical composition
Chemical Composition,% | |||||||||
Electric Resistance Welding | |||||||||
Grade | C | Mn | P | S | Cu | Ni | Cr | Mo | V |
GR.A | 0.25 | 0.95 | 0.05 | 0.045 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
GR.B | 0.30 | 1.20 | 0.05 | 0.045 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
Physical requirement
Electric Resistance Welding | ||
Grade | Tensile strength | Yield strength |
GR.A | 330 | 415 |
GR.B | 205 | 240 |
ASTM A53 Welded pipe for specific applications
Oil and gas industry:
Used in low-pressure pipelines to transport oil, natural gas and other hydrocarbons for gathering lines, feeders and power distribution systems.
Construction and infrastructure:
Used in structural applications such as columns, beams and supports, it is often used in scaffolding, temporary structures and industrial frames due to its high strength and cost effectiveness.
Water supply and piping systems:
Commonly used to transport water, sewage and other liquids, furnace welded pipes (Type F) can be used in non-critical low pressure piping systems.
Industrial and mechanical applications:
As a process pipe or structural component in mechanical equipment, Grade B is often chosen for higher strength and reliability under harsh industrial conditions.
Steam and heat transfer systems:
For low pressure steam lines and heat exchangers due to their heat resistance, seamless pipes are preferred for higher temperature and pressure applications.
ASTM A53 Welded pipe characteristics
Good mechanical properties:
High tensile strength and yield strength, grade A tensile strength ≥330MPa, yield strength ≥205MPa; Grade B tensile strength ≥415MPa, yield strength ≥240MPa. At the same time, its ductility is also good, the elongation of grade A and B weldability and formability are high of 20%, which can meet a variety of processing and use needs.
High weldability and formability:
It is suitable for welding operations, but also suitable for winding, bending, flanging and other forming operations. This gives it a high degree of flexibility during manufacturing and installation, allowing for easy on-site processing and assembly.
Corrosion resistance:
Through proper maintenance and coating, such as hot dip galvanizing, rust and oxidation can be effectively prevented, thereby extending its service life in a variety of environments.
Cost effective:
Compared to alloy steel or other high performance materials, A53 carbon steel is more affordable while maintaining excellent performance, making it a very economical choice.
Standardization and wide availability:
Extensive manufacturing and standardization worldwide ensures consistent quality and ease of procurement for industrial projects.
Precautions
Anti-corrosion requirements:
Galvanized or coated with protective coating when exposed to wet or corrosive environments.
Pressure limitation
Welded pipe (Type E) is not recommended for high pressure (>20 bar) or high temperature (>350°C).
Standard compliance:
When purchasing, it is necessary to confirm that the material is accompanied by ASTM A53 certification and testing report (such as water pressure test, non-destructive testing).
Installation specifications:
comply with ASME B31.1/B31.3 and other piping installation standards.
Summary:
ASTM A53 welded steel pipes, especially Grade B, are widely used in low-pressure fluid transport and lightweight structures due to their strength, economy and workability. It is complementary to seamless steel pipes (such as A106) or high-strength structural pipes (such as A500), and is the basic material in industrial and civil engineering.
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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