... gas covering for traditional propane and acetylene gas in metallurgy, electric power, mechanical manufature, petrochemicals, vehicle maintenance, quartz glass ... manual cutting, 1-2 torches NC automatic cutting, flame spray, flame prcessing, electric arc welding, flame ( gas) welding, stainless steel cutting ... P.: +86 0 13591381196 HGQ-3000/630 Oxyhydrogen flame/electric arc welding cutting machine