... ,certificate:CE,ISO9001:2008 Spherical Tank GroupSpecification:Material of Spherical shell plates16MnR, 16MnDR, 15MnNbR ... , LNG, Coal Gas, Water Gas, Compressed Air, Vacuum, Liquid Ammonia, Liquid Nitrogen, Refined Propylene, Butadiene, Isobutene, Propane, C3 Fraction, ... C4, C5, VCM, Clean Oil, Liquid Methyl Ether, Liquid Carbon Dioxide, Pulverized Coal, Light Hydrocarbon, methyl chloride, ...