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Features of the Api 5l Seamless Pipe

February 18, 2020 by oilandgaspipe  

API 5L specification covers seamless and welded steel tubes. Includes standard-weight and extra-strong threaded line pipe. Standard weight smooth end, Regular weight smooth end, additional strong smooth end, special smooth end, extra strong smooth end pipe is its part. As well as bell and spigot and through-the-flow line (TFL) pipe are made up of this steel. Api 5l Erw Pipe also requires a license for the manufacturer's monogram, and the composite index of the approved manufacturer is maintained. This means that, at the request of a potential manufacturer, API will send the auditors to the mill to ensure they can meet the requirements of the standard. This would be like a franchise and does not accept any liability for the actions of the mill or the performance of the product.




Api 5l Seamless Pipe is available in a wide range of carbon grades and their respective alloys. Seamless steel and special welded pipe configurations are available in a variety of sizes, qualities and properties. In addition, a series of final heat treatment options are offered including annealing, standardization, quenching and tempering.


The key features of API 5L X56 conduit tubes:

The production of standard fine-grained Aluminium Pipe with low sulfur content and low phosphorus content enhanced weld ability in terms of chemistry and geometry


  • high-performance grades
  • Extensive experience in acid services
  • larger dimensional range of seamless pipes
  • Leader in the manufacture of thick-walled tubes (up to 100 mm)
  • tight pipe end tolerances (inside and outside diameter)
  • Supply of holes (motherpipe) for bends and fittings


API 5L X56 PSL2 applications without pipe welding

Carbon steel is used in the most important engineering applications and in certain applications in the automotive sector. As well, some of the value-added carbon steel types of products include LPG cylinder steel, corrosion defiant steel, boiler superiority, car grades, accuracy tubes and grades of medium and high carbon, along with others.


API requirement SPEC 5L conduit tubes: identify the necessities for the manufacture of two product requirement levels (PSL1 and PSL2) of faultless and seamless steel tubes for utilize in pipeline transport systems in industries of oil and natural gas.


Specifications for Api 5l X65 adhere to the International Organization for Standardization ISO 3183, which standardizes pipeline transport systems in offshore materials, equipment and structures of petroleum, petrochemicals, and natural gas industries.


The technical committee of the authors of the standards recognized that there are two product specifications. The basic levels (PSL) of the technical requirements and therefore developed PSL 1 and PSL 2. PSL 1 is a quality standard for pipe where PSL 2 contains Additional chemical, mechanical properties, and test requirements.


Covered by this specification are A25, UNA, if (and the following “X” Degrees), X42, X46, X52, X56, X60, X65, X70, X80. The next two-digit number "X" indicates the minimum production force (in psi of thousands) of the tube produced at this degree of.


Steel prosaic stocks supply a full range of Api 5l X52 PSL-1 & PSL-2 conduit pipes in cracks.


Features and scope of seamless pipes

January 23, 2020 by oilandgaspipe  

Seamless pipes occupy a special place in the pipe market. The fact is that special machines and manufacturing methods are used for their production since conventional methods leave seams.


The most common methods for producing  api 5l x65 seamless pipes are rolling, forging, drawing, or pressing.


As a material, various metals and their alloys can be used. They are selected depending on the principle of the pipe.




Seamless rolling is obtained by rolling an ingot of metal using special equipment that creates holes in the center of the metal. A completely different method for the production of seamless elements is also possible - drilling a hole inside a cylindrical workpiece.


Hot-rolled api 5l x52 seamless pipe is characterized by a large number of features and complexity of manufacture. These include hot rolling only; heat treatment occurs at a temperature exceeding the level of recrystallization.


Seamless rolled api 5l erw pipe is necessarily made using heat treatment methods.


Cold-rolled seamless tubes are processed in the cold state, but before that, hot rolling is carried out.


Due to the variety of methods for manufacturing a api 5l seamless pipe, it is possible to achieve the highest level of product strength and significantly save money, materials, and time.


In the manufacture of seamless pipes, alloyed, high alloyed, carbon and high carbon steel grades can be used. In total, about ten grades of steel are used for the production of seamless pipes, which makes it possible to choose the best option by the needs.



A seamless pipe can be classified by size: multiple measured length, non-measured length, and measured length.


Depending on the manufacturing method, several types of seamless pipes are distinguished: hot-rolled pipe, seamless, and cold-rolled pipes.


astm a249 tubing is seamless, depending on the parameters of the walls, it can be thin-walled and thick-walled. Dimension is calculated based on their external diameter. According to GOST, a hot-rolled pipe in diameter should vary from 25 to 700 mm (outer diameter), while the wall thickness should be 2.5-75 mm. Production of unmeasured products in the range of 4-12 m is possible.


In astm a213 tubing, the outer diameter varies from 8 to 450 mm. Wall thickness should be up to a maximum of 20 mm.


Seamless steel pipes in terms of the ratio of wall thickness to diameter are found from 6 to 13 mm. They belong to a special type of thick-walled. They can be made from various non-ferrous metals. Such materials are used when transportation of chemicals through such elements is provided. What is noteworthy, hot-rolled steel found its application in cryogenic technology.



The main advantage of astm a269 tubing is the absence of seams so that they become almost invulnerable. The absence of a weld increases several times their strength and resistance to external influences.


Its good anti-corrosion properties distinguish a hot-rolled pipe made from a thick sheet of metal.


The seamless pipe can be made from various grades of steel, has a high degree of thermal conductivity and low-temperature linear expansion.