abs gr ah specification for schaffhausen

AH36, DH36, EH36 High Strength Shipbuilding Steel Plate

High-intensity hull structure steel preheating requirements:For all AH, DH, EH plate thickness greater than 30mm angle, butt joints, shall be preheating to 120 ~ 150 °C before welding. 3. For thickness of the plate 30mm, the ambient temperature is below 5 ° C, preheated to 75 ° C; Ambient temperature below 0 ° C, preheated to 75 ~ 100 ° C.