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TOBO STEEL GROUP CHINA

  • China,Shanghai ,Shanghai
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China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4

  1. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  2. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  3. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  4. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  5. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  6. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  7. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  8. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  9. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  10. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  11. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4
  12. China Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4

Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4

  1. MOQ: 1 PCs
  2. Price: Negotiation
  3. Get Latest Price
Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability 10000 pcs / month
Delivery Time 15-30 Working days
Packaging Details According to your requirements
Prodcut Alloy Steel Round Bar
Impact Value ≥50 J
Shape Round
Special Pipe API Pipe
Corrosionresistance Moderate to High
Surfacefinish Hot Rolled, Cold Drawn, Polished
Surface Finishing Black, Bright, Polished, Peeled
Applications Automotive, Machinery, Construction, Aerospace
Competitive Advantage Good purity and homogeneity.
Grade 4340
Hardness HRC 20-60
Application Automotive, Machinery, Construction
Production Technology Hot rolled or forged condition,
Annealed Hardness 170-207
Tensile Strength 1274MPa
Brand Name TOBO
Model Number Alloy Steel Round Bar
Certification CE&ISO
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability 10000 pcs / month
Delivery Time 15-30 Working days Packaging Details According to your requirements
Prodcut Alloy Steel Round Bar Impact Value ≥50 J
Shape Round Special Pipe API Pipe
Corrosionresistance Moderate to High Surfacefinish Hot Rolled, Cold Drawn, Polished
Surface Finishing Black, Bright, Polished, Peeled Applications Automotive, Machinery, Construction, Aerospace
Competitive Advantage Good purity and homogeneity. Grade 4340
Hardness HRC 20-60 Application Automotive, Machinery, Construction
Production Technology Hot rolled or forged condition, Annealed Hardness 170-207
Tensile Strength 1274MPa Brand Name TOBO
Model Number Alloy Steel Round Bar Certification CE&ISO
Place of Origin China
High Light ASTM4140 alloy steel round bar42CrMo4 heat exchanger round barboiler alloy steel round bar

Boiler & Heat Exchanger Alloy Steel Round Bar ASTM4140/42CrMo4 

 

This high-performance alloy steel round bar is manufactured with ASTM4140 and 42CrMo4 materials, designed specifically for boiler and heat exchanger applications, with a diameter range of 20-300mm to meet diverse thermal equipment size requirements. It combines excellent high-temperature resistance, corrosion resistance and mechanical strength, perfectly adapting to the harsh working environment of boilers and heat exchangers.
 
ASTM4140 and 42CrMo4 are high-quality alloy steels with outstanding hardenability, toughness and creep resistance. They can withstand long-term operation under high temperature and pressure, not easy to deform or crack, ensuring the stability and safety of boiler and heat exchanger systems. The round bar is produced through advanced hot rolling or forging process, featuring a dense internal structure, uniform wall thickness, precise dimensional tolerance and smooth surface, reducing wear and fluid resistance during use.
 
Widely used in manufacturing boiler tubes, heat exchanger components, thermal power station equipment, and high-temperature pipeline parts. It undergoes strict quality inspection, including chemical composition analysis, high-temperature performance testing and dimensional accuracy detection, fully complying with international industry standards. With reliable performance, long service life and good machinability, it provides a safe and durable material solution for boiler and heat exchanger manufacturing.
 
 
Products round bar
Material SS400 S45C S20C
Standard ASTM A240,GB/T3280-2007,JIS4304-2005,ASTM A167
Length 3-12m
Size 8-400mm
Application ships building industry,petroleum,chemical industries, war and electricity industries, food processing and medical industry, boiler heat exchanger, machinery and hardware fields.
Payment Terms L/C , T/T or Western Union

 

ABOUT US

We specialsied in kinds of steel products more many years,especially in hot rolled steel round bars ,square bars,flat bars ,cold drawn bars and forged bars.
Our main material are all carbon steel and alloy steel ,such as :aisi1020 1035 1045 1055 s20c s35c s45c s55c ss400 a36 c20 c35 c45 ck45 aisi4140/scm440 aisi4340/40crnimoa aisi8620H,40cr,gcr15,sae52100,20Mn,40Mn,St52,St37,S235JR,etc

1. Grade:

45# 45B S45C C45 CK45 Cm45 AISI1045 SAE1045 ASTM1045 XC45 1.0503 0.1191 1.1201

2. Specification:

Dia: 20-300mm, Length:2000-13000mm or as required

3. Process:

Hot rolled, black surface

4. MOQ:

20mt.

5.. Chemical composition:

Grade C Si Mn P S B
45#

0.42

0.50

0.17

0.37

0.50

0.80

Max

0.035

Max

0.035

 
45B

0.42

0.49

0.17

0.37

0.60

0.90

Max

0.035

Max

0.035

0.0005

0.0035

S45C

0.42

0.48

0.15

0.35

0.60

0.90

Max

0.030

Max

0.035

 
1045

0.43

0.50

0.15

0.35

0.60

0.90

Max

0.030

Max

0.050

 

6.Quality condition

 

1): Straightness: 3mm/m (max)
2): Corner Radius: 3(max)
3): The ends will be end cut or gas cut
4): No cracks on the surface

7. Standard:

According to national standard (GB)for our products, if not, supply according to national standards(GB) or agreement.

Standards

ASTM / ASME,GB,DIN, JIS,T14975, etc
Steel Grade
200, 201B , 201H ,301, 303, TP304, TP304L/304L, 321 ,TP321, 316, TP316L, 316L, 316Ti,
Out Diameter
6mm to 2000mm or customized
Wall Thickness
0.5-220mm
Length
5.8m ,6m,or customized
Tolerance
Out diameter : +/-0.15mm ,Thickness: +/-11% of wall thicknessLength: +/-4.5mm - 0mm
Surface
Mirror Polish,Satin Polish,Without Polish,NO.1,NO.4
MOQ
1 ton
Supply ability
3000 tons per month
Packing
3, bundles to be covered by polythene & strapped securely
Payment terms
T/T or L/C,TT 30% in advance ,70% balance after received B/L copy
Delivery terms
FOB CFR CIF EX Works DDU
Delivery time
Within 5-20 days after received the deposit or as client's requirements

 

                                              

 

 

 

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delivery&packing


Packaging: In wooded cases , pallets or according to clients' requirements


Shipping: Tianjin port, Shanghai port and the other main ports in China


Our service
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.


Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.


Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.


Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.

 

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Agent,Importer,Exporter,Trading Company,Seller

  • Year Established:

    1998

  • Total Annual:

    3,000,000-10,000,000

  • Employee Number:

    200~300

  • Ecer Certification:

    Verified Supplier

TOBO GROUP sales head offce in Shanghai.   We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area of 6,8,000square meters, existing 260 workers and 45 technicia... TOBO GROUP sales head offce in Shanghai.   We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area of 6,8,000square meters, existing 260 workers and 45 technicia...

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Get in touch with us

  • Reach Us
  • TOBO STEEL GROUP CHINA
  • No.208,Lvdi Road,Baihe Town,Qingpu District,Shanghai,China
  • https://www.tobo-group.com/

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