High-Performance Low Temp Carbon Steel Valve

In the liquefied natural gas (LNG) industry, LCB (ASTM A352 Grade LCB) low-temperature carbon steel castings have become the key material selection for core equipment manufacturing due to their precise adaptation to the temperature range of -46 ° C to +345 ° C. In the LNG industry chain, from the outlet valve of the cryogenic storage tank in the liquefaction plant, to the control valve of the transportation pipeline network, and then to the unloading arm valve of the receiving station, all need to withstand temperature fluctuations from -162℃ (the boiling point of LNG) to room temperature for a long time. LCB, through the synergistic effect of 0.20-0.50% nickel and 0.40-1.06% manganese elements, It can still maintain a low-temperature impact toughness of over 27J below -46℃, preventing the valve body from cracking due to sudden temperature changes. Meanwhile, the trace amounts of methane, ethane and other light hydrocarbons that may be contained in the LNG medium impose extremely high…