Hot Rolled Alloy Carbon Structural Steel Bars

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China main port
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TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Hot Rolled Alloy Carbon Structural Steel Bars

                       

Products Details 


Product Name 

 Alloy Steel 1.2379

Standard

 ASTM A689, JIS G4801, DIN 17221, GB/T 18254, ASTM A295, JIS G4805, etc.

Spring steel

65Mn, 1566, 60Si2Mn, 9260, etc.

Bearing steel

GCr15, SAE52100, GCr15SiMn, 100CrMnSi6-4, SJU2, etc.

Cold heading steel

ML25, ML35, etc.

Alloy structural steel

40CrNiMo, SAE4330, 42CrMo, 15Cr2Ni2, 40CrNi2Mo, 35CrMoV,

12Cr1MoV, ASTM4130, SCM420, 40CrV, etc.

Military steel

20Cr2Ni4A, 18Cr2Ni4WA, 23CrNiMo7-4-7, etc.

Heat resistant steel

5CrNiMoV, 4Cr10Si2Mo, etc.

Mold and tool steel

SKD62, Cr12, 31CrMoV9, H11, 4Cr5MoSiV1, SKD61, DIN1.2344, H13,

35CrMoV, Cr12Mo1V1, SKD11, X153CrMoV12, D2, O1, DIN1.2510,

P20, DIN1.2311, 3Cr2Mo, 9CrWMn, 4Cr13, AISI420, DIN1.2083,

Cr12MoV, DIN1.2601, P20+Ni, Cr8Mo2SiV, DC53, DIN1.2738, etc.

Gear steel

ASTM8620, SAE4340, SNCM430, 40CrNiMo, etc.

Size

Round bar: 15-1200mm

Square bar: 80-800mm

Length

 2-12m, as customers' requirement.

Melting process

EAF+LF+VD

Ultrasonic testing

SEP1921-84 C/C, D/D, E/E

Surface treatment

Black, grinded, peeled, polished are available

Delivery condition

Annealing, tempering, quenching + tempering

Technique

 hot rolled, cold drawn, forged are available

Package

 Standard seaworthy packing, as customers’ requirement

Delivery Time

 30 days after receipt of the deposit, negotiable.

Available Sizes

 

Grade

Size (mm)

Round rolled steel

(Dia.)

Flat rolled steel

Round forged steel

(Dia.)

Square forged steel

Bright bar

(Dia.)

High-quality carbon structural steel

16-320

5-38

44-150

120-900

100-750

12-150

Alloy structural steel

16-320

5-38

44-150

120-900

100-750

12-150

Carbon tool steel

16-320

5-38

44-150

120-350

100-310

12-150

Alloy tool steel

30-90


100-900

100-750

12-150

High speed tool steel



80-120

80-110

12-150

Bearing steel

16-320

5-38

44-150

120-300

100-600

12-150

Spring steel

14-180

5-38

44-150

120-300

100-260

12-150

Stainless steel

16-250


120-750

120-600

12-150

High temperature alloy steel



55-200

80-200

12-150

Free-cutting steel

14-250


120-400


12-150

Gear steel

16-320

5-38

44-150

120-900


15-150



Products Show 

 


Product Overviews 

Product NameTypical GradesDiameter(mm)Standard adopted
Carbon Steel20 (1020/S20C/C22)Ø16-Ø300

 

 

GB/SAE/JIS/DIN

 

40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing SteelGCr9 (51100/SUJ1)Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)

 

Cr-Mo Steel

20Cr (5120/SCr420H/20Cr4)Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel20CrNiMoØ16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)


Application 

Carbon Steel

 Mold bottom,   Plastic mold,   Construction machinery parts

 Automobile parts,   Security grills,   Screens,  Construction

 Bearing Steel  Aerospace,   Navigation,   Nuclear energy,   Chemical industry

 Electronic information,   Petrochemical,   Instrument and meter

 Transportation 

 Cr-Mo Steel  Mechanism & Fasteners gear,    Stressed components for vehicles 

 Engines and machines,    Parts of larger cross-section

 

Gear Steel

All kinds of gears,   Statically and dynamically stressed component for vehicles

Engines and machine,   Larger cross-section parts,   Crankshafts 


Work Shop 

 Hot Rolled Alloy Carbon Structural Steel Bars


Company Information 

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

 


FAQ

1, Your advantages?

     professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

      SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3,  Factory or Trading Company?

      CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

    30% TT as deposit and 70% before delivery.

    Irrevocable L/C at sight.

5, Trading Terms?

    EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

     CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

     For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.


Packaging & Delivery

1, Packaging: seaworthy package or as required 

2, Delivery: 35-45 days or based on quantity


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Q:Requirements for groove welding of grade 22mm round steel and manual arc welding
If not on the lathe, in the groove on the round bar with gouging or cutting gun, docking form X type double sided bilateral docking, blunt edge 2mm root gap 2mm welding, welding side sincere one or two seam, flip the workpiece on the other side of a full weld groove, flip weld residual,
Q:What is the difference between strip steel and round steel? Where are they mainly used?
Difference between round bar and other steel bars:(1), is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other.(2) the composition is different. Round steel (grade a steel) belongs to ordinary low carbon steel, and most other steel bars are alloy steel.(3), the strength is not the same, low strength steel, and other steel with high strength, the diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, while the other bars in the break before the deformation is much smaller.
Q:Can steel bars be replaced by large screws in the concrete floor?
Tensile strength, extensibility, yield point! The same thread can be used instead!Of course, the number of roots must also be the same ~ only specifications vary!
Q:What's the difference between a round tube and a round tube?
Round steel is a medium solid steel, of course the tube is hollow
Q:Is there a steel bar of 6 diameter on the market?
Including round steel bar, ribbed steel bar and twisted steel bar. Steel bars for concrete reinforcement is straight or strip steel plate reinforced concrete reinforcement steel, its shape is divided into round steel bar and deformed steel two, straight and coiled state for delivery two.
Q:What is hot rolling? What is called forging?
By now most of the forging. The blank is placed in the fingerprint forging mold forging is that there is a free forging is the ancient drama often appear with a hammer blacksmith blacksmith
Q:What kind of material is the first round steel?
[round bar] refers to the cross section of round solid steel. Round bar is divided into three parts: hot rolling, forging and cold drawing.
Q:How about tempering No. 45 round bar?
Quenching and tempering is the double heat treatment of quenching and high temperature tempering, the purpose is to make the workpiece have good comprehensive mechanical properties.
Q:Can the same grade steel instead of round bar be ok?
The above analysis, threaded steel than round steel performance is good, in general circumstances can be replaced.
Q:Use of stainless steel round bar?
Stainless steel round bar is a kind of long material, and it is also a kind of bar. The so-called stainless steel round bar refers to the cross section is even round long material, generally about four meters long. It can be divided into light and black. The so-called light circle, refers to the smooth surface after processing and quasi rolling; and the so-called, refers to the surface of the black, coarse, and direct rolling.

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