... SPCC, SPCD, FH, accords with GB13237-91, JIS G 3141-1996Product quality---accords with GB 13237-91Line speed-- entry ... 300,000 tpyEnergy saving style--- heat recovery of flue gas.Continuous annealing furnace---Radiant tubes heating (RTF), verticalFuel ... type----natural gas, liquefied petroleum gas, mixed gas, coke oven gas and electricityWelding machine----narrow lap seam ...