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name of the products	class	specification	standard in uesd	main usage
hot-rolled round steel	q195，q215 q235，q255 q275，10#-55#	φ10-φ32	gb/t700-1988 carbon structural steels gb/t702-1986 hot-rolled round and square steels—dimension, shape, weight and tolerance gb/t14292-1993 hot-rolled long products technical requirements for structure steel and low-alloy structure steel gb/t699-1999 quality carbon structural steels	structure of the projects, mechanical parts, hardware products parts etc
hot-rolled ribbed steel bar	hrb355 hrb400	ф6-φ32	gb1499-1998 hot rolled ribbed steel bars for reinforcement of concrete	concrete nets for reinforcement of concrete in civil construction, harbors, highways etc
hot-rolled plain steel bar	q235	φ10-φ20	gb/t13013-1991 hot rolled plain steel bars for the reinforcement of concrete
hot-rolled wire rod	q195，q215，q235 h08a h08e h08c	φ6.5 φ8 φ10	gb/t701-1997 hot rolled low carbon steel wire rods gb/t3429-1994 wire rods for electrode gb/t14981-1994 dimension shape weight and tolerances for hot-rolled wire rods	cold-drawing products, mechanical products, hardware products etc
cc billet	q195，q215，q235，q275，hrb335，hrb400 10#-55#	120×120 150×150 160×160	gb/t700-1988 carbon structural steels gb/t699-1999 quality carbon structural steels gb1499-1998 hot rolled ribbed steel bars for reinforcement of concrete yb/t2011-1983 continuous casting square and rectangular blank	materials for steel-rolling and forged products
seamless steel tube	10#-20#	10-89 1-10	gb3087-1999 seamless steel tubes for low and medium pressure gb/t8162-1999 seamless steel tubes for structure purpose gb/t8163-1999 seamless steel tubes for liquid service	low and medium pressure, liquid service tubes etc
pig iron	l04 l10 z14-z34		gb/t717-1998 pig iron for steel-making gb/t718-1982 pig iron for founding	materials for steel-making and metallurgical fouding
mg-c brick	mt10-mt18		yb/t4074-1991 magnesia-carbon refractory bricks	converters, eof and refining furnace for steel-making
clay refractory bricks	zgn42 gn42 rn-36、40、42 jzn-287、36、40 sn-40kn-40 xn-40zn-40		yb/t5050-1993 kaolinite refractory bricks for blast furnace yb/t5107-1993 fire clay refractory bricks for hot-blast stoves yb/t5109-1993 fire clay refractory bricks for glass furnace yb/t5112-1993 fire clay refractory bricks for ladle flow control systems	heat furnaces, converters, blast furnace etc
high alumina spinel castable refractories	ltj65、70、75		high alumina spinel castable refractories	liner of the ladles for steel-making
uniformed refractory	ln-55、65、75、85 nn-30、38、42、45		gb/t2994-1994 high alumina refractory mortars gb/t14982-1994 fire clay refractory mortars	special used refractory bricks for building

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