... .0-25,25-50,50-80mm 3.Gas Yield:295L/KG Tianjin Xinze Fine Chemical Co.,LtdWe are glad to offer ... : Grey, yellowish-brown ,black or brown solid blockSize:2-4mm,4-7mm,7-15mm,15-25mm,25-50mm,50-80mm Gas ... for iron and steel industry Calcium Carbide 50-80mm 295L/KG