Q345 Carbon Steel Bar

Carbon steel refers to steel materials with a carbon content between 0.05% and 2.11%. In carbon steel, the higher the carbon content, the greater the hardness and strength, but the poorer the toughness. Carbon steel rod material belongs to one of them.
The main grades and specifications of carbon steel rod materials
1. Hot rolled steel bars: Hot rolled steel bars are divided into different grades and specifications such as low-carbon steel, medium carbon steel, and high carbon steel. Among them, low-carbon steel rods (such as Q235B) are widely used in fields such as building structures, bridges, and ship load-bearing; Medium carbon steel rods (such as 45 # steel) are suitable for mechanical parts, bearings, etc; High carbon steel rods (such as 55 # steel) are used to make components with high strength requirements such as springs.
2. Cold drawn steel bars: Cold drawn steel bars are made through cold processing technology, with a smooth surface, precise dimensions, and high strength. Cold drawn steel bars are widely used in fields such as automobiles, machinery, aerospace, etc.
3. Forged steel bars: Forged steel bars are divided into different types such as alloy steel, carbon steel, bearing steel, tool steel, etc.

Product Description

Product NameQ345 Carbon Steel Bar
Outside Dia(mm)8mm-650mm
Technologyhot rolled/cold rolled/cold drawn/forged
 Model type12/20/30CrNi3A/ 5CrMnMo/ 5CrNiMo / 45CrNiMoVA / 40CrNiMoA / 40CrNi2Mo/20Cr2Ni4A/ 31CrMoV9 / 30CrNiMo8/ 30Cr2Ni2Mo / 34CrNi3Mo/34CrNiMo6 / 9Cr2Mo / 9CrSi /CrWMn / 9Mn2V/etc.
Length1-12m/customized
Other sectionsAngle bar/Square bar/Flat bar/Flat bar
StandardGB/T799,ASTM A29,A108,A321,A575,BS970,DIN1652,JIS G4051
   MaterialASTM(1005,1006,1008,1010,1015,1020,1025,1030,1035,1040,1045,1050,1055,1060,1065,1070,1080,1084,1016,1022)
DIN(Ck10,Ck15,Ck22,Ck25,Ck30,Ck35,Ck40,Ck45,Ck50, 30Mn4,40Mn4)
BS(040A04,095M15,045M10,080A40,045M10,080M50)
GB(Q195, Q235,Q345)
AdvantagesHigh strength, good weldability, good machining performance, good corrosion resistance

 

 

Adopt standardGB/T 700-2006,GB/T 1591-94,JIS G3101-2004,ASTM A36/A36M-05,ASTM A242/A242M-04,ASTM A529/A529M-05,ASTM A572/A572M-06,EN 10025-2-2004.
GradeQ195, Q215 A, Q215 B, Q235 A, Q235 B, Q235C, Q235D, Q275, Q275B, Q275C, Q275D, Q295, Q345, Q390,Q420, Q460,SS330,SS400,SS490,SS540,A36,1,GR.36,50(245),55(380),42(290),
60(415),65(450),S185(1.0035),S235JO(1.0114),S235JR(1.0038),S235J2(0.0117),S275JR(1.0044),S275JO(1.10143),S355JO(1.0553),E295(1.0050),E335(1.0060),S235J2W(1.861),S355J2W(1.8965),10#,15#20#.
Section ShapeRound, square, angle, hexagonal, flat, shaft.
Process of product:Check the raw materia→Blank → Grind the burr of blanked material → Heat in the intermediate frequency heating furnace → Align → Quench → Temper → Inspect → Package
Surface treatmentPolished, black, grinding,customized according to requirements
Application1) : Can be used in many fields such as building, automobile, shipbuilding, petrochemical, machinery, medicine, food, electric power, energy, space, building and decoration, etc.2): Can be made into mould template, mortise pin, column.3): This kind of steel have good mechanical property, is widely used in structural parts which may support stress alternation, especially made into some connecting rods, bolts, wheel gear.4): This kind of steel is the most common blanks and materials of shaft parts.Its die welding material model is CMC-E45.

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FAQ

Q: What about your company ?
A: We are professional manufacturer for stainless steel.Galvanised Steel.Carbon steel.ColorCoated steel, and our company also is a very professional a trade company for steel products.wecan also provide a wide range of steel products.We have the expeirance of steel business formore than 10 years and exported to Mid East,South America,Southeast Asia,Africa,South andEast Asia etc.
Q: Can I go to your factory to visit?
A: Of course, we welcome customers from all over the world to visit our factory.
Q: What is your terms of payment:
A: 30% T/T deposite and 70% balance before shipment.
Q: What is the packing of goods?
A: Waterproof paper, and steel strip packed.Standard Export Seaworthy Package.Suit for allkinds of transport,or as required
Q: What is your delivery time?
A: For stocks,we could transport the goods to loading port within 7 days after we received thedeposit;,For production,it usually takes about 15-30 days after receiving the deposite.Also maybeit will be delayed just the different quantities
Q: Do you provide samples ? is it free or extra ?
A: The sample could can provide for customer with free,but the courier freight will be covered bycustomer account.
Q: Do you accept the third party inspection?
A:Yes absolutely we accept
Q: Why should you buy from us not from other suppliers?
A: Integrating the superior resources of China's steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered tocustomers in a timely manner.
Q:How can you guarantee quality?
A: Always a pre-production sample before mass production;Always fnal inspection beforeshipment

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