L245NB pipeline pipe is widely used in petroleum and natural gas engineering. Our company has passed the certification of API ISO CE BV CCS and other authoritative organizations. Products are exported to dozens of countries and regions, and have become the preferred fixed supplier for many engineering companies.
L245NB pipeline standard: GB / 8163-2008, American standard ASTM A53 / A106, German standard DIN 1629 DIN2448 DIN17175, European standard EN10204, Japanese standard JIS G3462, material: API 5L GRB X42 X46 X52 X56 X60.
The structure obtained by high temperature tempering of L245NB line pipe is tempered sorbite. The heat treatment combined with quenching and high temperature tempering is conventionally called quenching and tempering, and its purpose is to obtain comprehensive mechanical properties with good strength, hardness, plasticity and toughness. Therefore, L245NB line pipe is widely used in automotive, GB / T9711.1 pipeline steel pipe, machine tools and other important structural parts, such as connecting rods, bolts, gears and shafts. The hardness after tempering is generally HB200-330.
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