Tianjin China Sea radius of the steel trade for many years operating the Shougang Group, Tonghua Iron and Steel, Special Steel, Benxi Iron and Steel, Ling steel, sand steel and other steel. 
 Main alloy structural steel ---- Alloy Steel ---- wear steel ---- Carbon Structural Steel ---- weathering steel ---- low temperature steel ----- tool steel 
 Round bar refers to the section of a round solid bar of steel. Mm of diameter, its specifications, such as "50" means that the diameter of 50 mm round bar. 
 The round bar is divided into hot-rolled, forged, and cold drawing three. Hot rolled round steel specifications of 5.5-250 mm. :5.5-25 mm round bar is mostly straight into bundles of supplies, commonly used to make steel bars, bolts and various mechanical parts; greater than 25 mm round steel, mainly used in the manufacture of mechanical parts or seamless steel pipe billet round steel and reinforced the difference: an appearance is not the same as the light circle round bar shape, no pattern of rib, the other steel surface appearance sculptured ribs, would have resulted in a small round steel and concrete bond strength, bond strength of steel bars and concrete. The two ingredients are not the same, round steel (steel) belonging to the ordinary low carbon steel, and other reinforced multi-alloy steel. 3 intensity, low intensity of round steel, other steel high strength, ie the same as the diameter of the bar and other reinforced round bar can withstand tension than other reinforced small, round steel plasticity than other reinforced round bar, that is pulled off a large deformation, while the other reinforced pulled off before the deformation is much smaller. Round steel standards 
 Standard: (GB699-1988, with GB700-1988, GB3077-1988, GB702-1986, QJ/HG02.17-1991). 
 Materials are: 
 20 #, 35 #, 45 #, Q235, Q235B/C/D/E, Q345, Q345B/C/D/E, 20Mn, 35Mn, 45Mn, 65Mn, 12CrMo, 20CrMo, 15CrMo, 35CrMo, 42CrMo, 35CrMoV, 5CrMnMo , 20CrMnMo, 40CrMnMo, 20CrNiMo, 40CrNiMo, 20CrMnTi, 30CrMnTi, 16MnCr5, 38CrMoAL, GCR15, 09MnD, 34CrMo4, 35CrMo4, 42CrMo4, P11, 10CrMo910, 20Cr2Ni4,,,,, 
 The Company's inventory, timely delivery, short cycle special custom specifications. 
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 The operating principle: the Strategic decisions honest and trustworthy to fight the market, shape and development into their own competitive 
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 Quality assurance from the regular factory direct purchase, the supplier of quality standards in strict accordance with user requirements, and responsible for the quality in the end, the material does not match the refunding, replacement, guarantee to pay compensations. 
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