Pipeline steel plates are used to fabricate large diameter welded pipes which transport oil and nature gas.Now more and more world’s people foucs on protecting our enviroment,the new clean energy nature gas is widely used through pipelines.These pipeline steel plates owned ability of resisting high pressure,atmospheric corrosion and lower temperature surroundings.BBN steel Pipeline steel plates main steel grade:API 5L Gr.B X42 X52 and so on.