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Tungsten Carbide Filled Tubular Welding Rod Specification CTC Size Filler Weight/Rod Weight﹙%﹚ 2# *390±5mm 20-30mesh 6:4 3# *390±5mm 30-40mesh 6:4 4# *390±5mm 40-60mesh 6:4 5# *390±5mm 60-80mesh 6:4 ...