ASTM A178 is a specification that covers minimum-wall-thickness, electric-resistance-welded tubes made of carbon steel and carbon-manganese steel. These tubes are intended for use as boiler tubes, boiler flues, superheater flues, and safe ends in boilers.
ASTM A178 ERW Steel Pipe Features
Cold formed EN 10219 S275J0H rectangular hollow sections are a type of steel pipes that are widely used in various structural applications. These hollow sections are produced through a cold forming process, which involves shaping the steel at ambient temperature.
EN 10219 is a European standard that specifies the technical delivery conditions for cold formed welded structural hollow sections of non-alloy and fine grain steels. This standard ensures that the hollow sections meet specific requirements in terms of dimensions, tolerances, mechanical properties, and other relevant characteristics
Rectangular pipes made from cold formed structural steel offer several advantages. They have high strength-to-weight ratio, making them suitable for lightweight construction projects，construction, infrastructure, and manufacturing. Additionally, their rectangular shape provides enhanced load-bearing capacity and facilitates efficient space utilization.
When it comes to section properties, EN 10219 S275J0H rectangular hollow sections exhibit excellent stiffness and resistance to bending and torsion forces. The wall thickness of these pipes can vary depending on the specific application requirements.
Introduced L80- 13Cr special thread thickened tubing. By analyzing the deformation characteristics of L80-13Cr steel and combining the actual production experience, the pipe end thickening process is determined; by analyzing the mechanical properties of L80-13Cr steel, the austenitization temperature is set The heat treatment scheme of natural cooling to below 50°C in the air. The test results show that: the size and microstructure of the thickening end of the L80-13Cr special thread thickening oil pipe meet the design requirements, and the mechanical properties of the pipe body and pipe end are uniform; the tensile properties, impact toughness and hardness all meet API Spec 5CT-2011 specification requirements.
API 5CT Grade N80 oil casing is a high-strength, high-toughness carbon seamless steel pipe. Commonly used methods are: quenching and tempering (including direct quenching + tempering after rolling), normalizing, normalizing + tempering, and tempering after rolling. fire. 36Mn2V is the steel used for the production of N80 oil casing, which belongs to microalloyed non-quenched and tempered steel. The steel is suitable for processing by methods such as temperature control, cooling control, and deformation control. The steel pipe can achieve the required performance without quenching and tempering, which simplifies the production process and reduces the manufacturing cost of the steel pipe.
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