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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
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.
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API 5L X42 SEAMLESS STEEL PIPE
Standard: API 5L,EN 10210,ASTM A106, ASTM A500, GB/T 3094<br /> CONTACT: liana@lefinsteel.com<br /> Whatsapp: 008613752505280
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EN 10219 SCAFFOLDING PIPE<br/> Standard: EN10219<br/> Grade: S235JRH, S275J0H, S355J2H
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SCAFFOLDING STEEL PIPE<br/> Standard: EN39, BS1139, MS1462, JIS G3444<br/> Grade: S235GT, S355GT, SS400, SS500, STK490, STK500
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Submerged Arc Spiral Welded/Submerged Arc Welded Helical pipe<br /> SIZE:219MM-4084MM,WALL THICKNESS:7.75-22MM<br /> Wall thickness: SCH10, SCH40, SCH80, to SCH160, XXS (Max. 25.4mm)<br /> liana@lefinsteel.com tel: 0086 137 5250 5280 External Coating: 3LPE/3LPP, 2FBE/FBE, Black Painting, Varnish Coating...<br /> Standard:EN10217, EN10219, ASTM A53, ASTM A252, API5L<br /> Grade: S235JRH, S275JOH, S275J2H, S355JOH, S355J2H, S355K2H, GR.A, GR.B,×42，×46，×52<br />
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ASTM A252 is a standard of Piling pipe, the grades of ASTM A252 including Grade 1, Grade 2, Grade 3, Grade 3 is the most used option. ASTM A252 standard is widely used in constructions and structural buildings. This specification covers nominal thickness of the wall steel pipe piles of cylindrical shape and applies to pipe piles in which the steel cylinder acts as a permanent load- carring member, or as a shell to form cast-in-place concrete piles. LEFIN STEEL can produces the ASTM A252 piling pipe.
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Black pipe and galvanized(GI) pipe are two common pipe types. Black pipe, also known as steel pipe, is made of carbon steel with a dark iron oxide coating on the surface. GI pipe, also known as galvanized iron pipe, is made of steel coated with zinc to prevent rust and corrosion. LEFIN STEEL can produces both black pipe and GI pipe.
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How to make inside LSAW pipe and SSAW pipe uniform and smooth?
Longitudinal submerged arc welded pipes(LSAW PIPE) and Spiral submerged arc welded pipes(SSAW PIPE) are widely used in oil and gas transportation and building construction. But due to the welding, the interior of LSAW pipe and SSAW pipe is not always uniform or smooth, which can negatively impact its performance and durability. LEFIN STEEL mainly produces the LSAW PIPE and SSAW PIPE.
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What are the differences between hot dip galvanized and cold galvanized?
Galvanizing is a common anti-corrosion method and is often used in steel pipe processing. Hot-dip galvanizing and cold-dip galvanizing are both anti-corrosion coatings for steel, both methods have their pros and cons, but both are designed to increase the life and durability of the steel. LEFIN STEEL can do the two processes.
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A new generation of scaffolding system to help construction safe and efficient
Scaffolding system plays a vital role in the construction industry. In recent years, the introduction of a new generation of scaffolding system has further improved the safety and efficiency of construction.
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What are the differences between straight seam welded pipe and submerged arc welded pipe?
Straight seam welded pipe and submerged arc welded pipe are two different welded steel pipe. Normally we separate the two pipes though wall thickness. If the wall thickness over 16MM, that will be submerged arc welded pipe; if the wall thickness less than 16MM, that will be straight seam welded pipe. They are the two most commonly used welded pipes in various industries including construction, oil and gas, and transportation. Although they are both welded pipes, there are some key differences between the two. LEFIN STEEL can produces the two types of steel pipes.
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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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