... and low-temperature and corrosion resistant in petroleum,chemical and electronic industries.High-pressure boiler ... ,321,347X5CrNi1810X2CrNI1911X2CrNIMo18143Foodstuff,Gas,Chemicalsmetallurgy,biology,electron,chemical,petroleum,boiler,nuclear energyand ect.Fluid pipe20#,Q345(A ... cracking tube20#,20G,15CrMo,12CrMoGB9948-2006Allly to petroleum metallurgical industryStructure pipe10#,20#,45#,16Mn,Q345BGB/ ...