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Vật liệu hàn hồ quang chìm
S-717 x M-12K
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Caution
① Dry at 300~350°C (572~662°F ) for 60 minutes before use.
② In case of multi-layer welding of the thick plate, to prevent cracks, low current and low speed welding should be performed on the lower layer.
③ If weld heat input is managed below 30KJ/cm, a better impact toughness can be achieved.
④ When restraint stress is high or welding a thick plate, preheat according to rules. -
Purpose
① Pressure vessels
② Windtower
③ Structural steels -
Attribute
① Good performance with thick plates
② Good resistance to crack
③ Density : 1.1g/cm3