API Spec 5L PSL2 Grade B (L245) Pipeline Steel Plate

The "West-East Gas Pipeline" pipeline adopts large-diameter, high-pressure transmission pipes. The total length of this pipeline is 4167km, the transmission pressure is 10MPa, the pipe diameter is 1016mm, the steel grade used is X70, the thickness is 14.6mm, and the lateral impact energy at ~20℃ is ≥120J. The steel grade, specification and toughness level of this pipeline have been produced in China, and the quality has reached the international level.

API Spec 5L PSL2 Grade B (L245) Pipeline Steel Plate

API Spec 5L PSL2 Grade B (L245) Pipeline Steel Plate Chemical Composition and Mechanical Property

Grade	Chemical Composition(%)
C Max	Mn Max	P Max	S Max
API Spec 5L PSL2 Grade B (L245)	0.24	1.2	0.025	0.015
Grade	Mechanical Property
Yield Strength(MPa)	Tensile Strength(MPa)	% Elongation
API Spec 5L PSL2 Grade B (L245)	241-448	414-758	a

Handan Iron and Steel: In 2000, X52 and X60 pipeline steel with a thickness of 7.9mm were developed on CSP units and put into mass production.

Maanshan Iron and Steel: From January 2006 to December 2007, it will develop and commercially produce niobium microalloyed The thickness can only be produced to the commercial thickness of X56); the traditional hot rolling production line in Maanshan Iron and Steel New District develops niobium micro-alloyed X70~X80 pipeline steel.

Nangang: On October 28, 2005, the medium and heavy plate coil plant successfully rolled out 8.7mm Not too much, with a maximum thickness of 40mm and a maximum width of 3300mm. X100 has been listed as a scientific research project and is being prepared for development.

Jinan Iron and Steel Co., Ltd.: The medium plate factory and the medium and thick plate factory produced nearly 500t Higher grades of pipeline steel provide a solid foundation.

Anyang Steel: From January 2006 to December 2007, it cooperated with the Iron and Steel Research Institute to develop and produce L245NB/L245MB, X42 L290NB/L290MB, X46, X52 L360NB/L360MB, X56, L415MB, X65 L450MB, X70 L485MB, and

Tisco gang: Taigang has the production process conditions for the production of X56, X60 and X65 high-grade pipeline steel, and the first batch of L360 pipeline steel produced was shipped to Baoji on September 29, 2001. After supervision by the Cangzi Gas Transmission Project Department and the first inspection by the Baoji Steel Pipe Factory, all indicators such as the mechanical properties of the base material and pipes were qualified. In the "Cangzhou-Zibo" gas transmission pipeline project, TISCO won the bid for more than 7,300 tons of L360 pipeline steel, which will be manufactured by Baoji Steel Pipe Factory.

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