Reformed Gas TO Synthesis Gas Convertor Reactor - Shell Plate SA 516 Gr 55 Material - Weld Hardness 243 Brinells Hardness / HAZ 226 Brinells Hardness. ASME SEC II Part C (welding consumables)SFA 5.1 Specification for carbon steel electrodes for Shielded metal arc welding dosen't mention WELD &...