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Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130

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Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers
  • Buy cheap Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630 from wholesalers

Carbon Precision Steel Pipe Standard ASTM/A519 4140 4140H 4142 4142H 8620 4130 4340 8630

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Brand Name:Best
Model Number:40mm--360mm
Certification:API/CE/ISO/PED
Price:500 usd/ton
Payment Terms:L/C, D/A, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:100000 Ton/Year
Delivery Time:30 days normally, according to order quantity
Company Data
Site Member
Contact Person amy
Business Type: Manufacturer Distributor/Wholesaler Agent Importer Exporter Trading Company Seller Other
Officials: China Factory : Suzhou Industrial Park, JiangSu Province,China
Quality: Quality Certifitation Available
Product Details Company Profile
Product Details

Product Name : 440c stainless steel round bar Round Bar : Diameter 3-800mm


Product Information :


Diameter40mm--360mm
SurfaceAccording to order
Delivery stateAnnealing/Quenching and tempering
Lengthaccording to order(1.5m--6m)
Toleranceaccording to order
Product Keywordssuper duplex stainless steel plate price per kg,steel round bar,steel plate 3mm thick

Chemical composition

material
C
Si
Mn
P
S
Cr
Ni
Mo
Cu
35CrMoA
0.34-0.39
0.17-0.37
0.40-0.70
0.015
max
0.010
max
0.80-1.10
0.30
max
0.15-0.25
0.25max
42CrMoA
0.39-0.45
0.17-0.37
0.50-0.80
0.015
max
0.010
max
0.90-1.20
0.20
max
0.20-0.25
0.25max

Equivalent Steel Grade

DIN
ASTM A29
JIS G4105
BS
GB

EN ISO 10250
1.7225
4140
SCM440
708M40/708A42/709M40
42CrMo
42CrMo4

Mechanical Properties

Grade
Tensile Strength
Mpa
Yield Strength
Mpa
Elongation
%
Reduction
%
-40℃Akv2/J
Hardness
10.9
≥1040
≥940
≥9
≥48
≥50
HRC32-39
8.8
≥830
≥660
≥12
≥52
≥70
HRC23-34

Surface Treatment Bar: Origin Black, Origin Annealing bright, Turned, Peeled, Grinded

Heat Treatment/ Anealing
1) Forging
Preheat the steel carefully, then raise the temperature to 1150-1200°C for forging. Do not forge below 850°C.
2)Annealing
Heat the AISI 4140 slowly to 800-850°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 480°C followed by air cooling.
3)Stress Relieving
When parts are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.
4)Hardening
AISI 4140 steel is usually supplied ready heat treated to 18-22HRC. If further heat treatment is required annealed AISI 4140 should be heated slowly to 840-875°C and after adequate soaking at this temperature quench in oil. Temper as soon as the tools reach room temperature.
5)Tempering
Heat the AISI 4140 carefully to a suitable temperature selected by reference to a tempering chart or table (usually between 550-700°C, soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in air. Tempering between 250-375°C is not advised as tempering within this range will seriously reduce the impact value.


Quality :


Our products will be from black round bar. We will order the raw material from first class steel making companies to guarantee the inner quality. You can also lock the raw material manufacturer for your order.

We will continually improves and expands the quantity and quality of our product which exactly meet customers need. We do whatever it takes to make our clients happy.
We will develop long-term commercial and technical partnerships with customers. And we are committed to continual quality improvement of all internal processes. The success of our quality program is affirmed by our strong customer retention rate.


Certification :


Achieving the ISO 9001:2008 Certification is just one example of our Products’ dedication to quality and continuous improvement. Each employee is responsible for understanding company expectations and adhering to the procedures of our Quality Management System.
Our Products ensures customers receive the material ordered with accurate supporting paperwork. Customers can count on proper documentation, on-time performance and effective follow-up.


Our company

Our story
Since beginning operation in 1996, We has been dedicated to providing more than just material supply, We has helped customers reduce costs and improve the bottom line. This approach to partnering with customers has made our Products a leader among Steel Round bar and one of the fastest growing companies in China.


Product Show


Quality Control


Company Profile

BEST PIPELINE EQUIPMENT CO.,LTD



 

Best Alloy Engineering Alloy Pipe  as s a reference point for excellence in

the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties

for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.

 

 

The Company was founded in 1996 on the buttwelding fittings , forged flanges and steel pipes

 

with the aim of becoming a one-stop solution partner for their clients.

 

Best Alloy Engineering Alloy Pipe is one group company !

 

 

 

The company ’s business model is characterized by complete control of the supply chain, with

 

integrated production, stock and distribution operations. A strong market image reinforced by

 

genuine trust has enabled very rapid growth in all areas of the world.

 

 

It fixes assets of 8 million dollar, covers an area of 60,000 square meters.

 

In Best Alloy Pipe Engineering   , there are more than 150 employees

with strong technical faculty in our company ,including 15 engineers, and 16 technicians.

Owning advanced  flanges and tube supporting the production lines, the company has high technology skills in

forge and press, If push system, machining, cold forming, hot extrusion and heat treatment .

 

In addition, our factory also has the capabilities of chemical analysis, metallurgical analysis,

 

physical experiment, nondestructive testing and other advanced detection. Therefore, Best

 

Pipeline could produce different ranges of stainless steel, alloy steel, carbon steel flanges,

 

elbows, tees, reducers, caps, big bend, the socket series of pipeline components with high and

 

medium pressure, and various specifications, material steel pipe according to international and

 

domestic standards.

Best  Alloy Pipe   has a manufacturing license in the field of

the petroleum, petrochemical, chemical, shipbuilding and other industries. The products have been widely used

in marine, power generation, natural gas, chemicals, chemical, petroleum, pharmaceutical, coal, aviation,

 

construction, water supply and many other fields.

 

In 2003, the company has provided a lot of well-known foreign trade enterprises to the domestic

 

OEM products, and several foreign guests of audits and visits, which makes the company win the

 

domestic and foreign customers trust and praise. Along with the company's expansion command,

 

it has obtain the right to import and export goods in 2004, developing a direct business dealings

 

with Germany , Poland , Belgium , the United States, Russia, Australia, Brazil, Iran, Dubai, Paraguay,

 

Chile, Argentina, and more than 40 other countries. Now Best Pipeline has grown into a star company

 

gathered production, manufacturing, domestic and foreign sales of other diversified businesses.


Best Pipeline uses high-quality products and good service to establish a good corporation image

 

and good reputation, using a reasonable price to win customers’ trust and occupy the market.

 

The company will always insist on putting science and technology in the first and make every

 

effort to develop new product as customers’ requirements.

 

The company will always pursuit excellence along with the brilliant corporation spirit, and always

 

adhere to the purpose of "Quality first, Customer satisfaction", to provide customers with qualified

 

products and good service

 

 

 

 

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