K-250HT焊丝K-250HT焊丝1.21.6JIS YF2A-C-250F,HCO2DC0.070.501.591.3--K-300HT焊丝K-300HT焊丝1.21.6JIS YF2A-C-300F,HCO2DC0.090.681.541.1--K-350HT焊丝K-350HT焊丝1.21.6JIS YF2A-C-350F,HCO2DC0.120.451.371.3--K-450HT焊丝K-450HT焊丝1.21.6JIS YF2A-C-450F,HCO2DC0.240.511.202.0--K-500HT焊丝K-500HT焊丝1.21.6JIS YF3B-C-500F,HCO2DC0.192.060.355.26--
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