10mm construction QT400 18 QT400 15 QT450 10 QT500 7 Grey Cast Iron Bar with best quality from shandong good supplier

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Price:$0.60 - $0.80
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Product Overview


Performance characteristics of cast iron continuous casting profiles:
1. The fine and uniform graphite and fine grain structure can improve the tensile strength of cast iron by 1-2 grades compared with sand casting, increase the fatigue limit by 50%, and increase the elastic modulus by 30%, which can reduce the weight of machine parts.
2, fine grain compact structure, provide excellent oil pressure resistance, pressure resistance performance, compared with conventional sand casting, oil pressure resistance increased by 4 times and no leakage.
3, the fine graphite constitutes a good oil storage structure and fine grains, so that the surface finish of the processed parts is improved, the wear reduction and wear resistance under lubrication conditions are greatly improved, and the service life of the friction parts is extended. 4, good heat fatigue resistance, can greatly improve the resistance to cold and hot.
5 Good dimensional accuracy and section uniformity can reduce machining allowance by 50%, tool wear by 70%, and save machining hours by 50%.
6. Machining parts, electroplating, spray plating, hot dip, coating quality improvement.

Product Paramenters

Grey cast iron
GB National Standard:
HT100, HT150, HT200, HT250, HT300, HT350
JIS Japan
FC100, FC150, FC200, FC250, FC300, FC350
KS Korea
GC100, GC150, GC200, GC250, GC300, GC350
NO.20, NO.25, NO.30, NO.35, NO.40, NO.45, NO.50, NO.55, NO.60
UNS United States
F11401, F11701, F12101, F12801, F13101, F14101
Ductile iron
GB China
QT400-18, QT400-15, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2 QT900-2
JIS Japan
FCD350-22, FCD400-18, FCD400-15, FCD450-10, FCD500-7, FCD600-3 FCD700-2, FCD800-2
KS Korea
GCD370, GCD400, GCD450, GCD500, GCD600, GCD700, GCD800
60-40-18, 65-45-12, 80-55-06, 100-70-03, 120-90-02
F32800, F33100, F33800, F34800, F36200

Product Name
Ductile iron bar/cast iron casting / ductile iron cast
GB 1348-88
QT500-7 characteristics and scope of application:
It is ferric ductile iron, medium strength and toughness, good machinability. At low temperature, toughness changes to brittleness, but low temperature impact value is higher, and has a certain temperature resistance and corrosion resistance. It is widely used in oil pump gear of internal combustion engine, temperature cylinder bulkhead of steam turbine, valve body of hydraulic turbine, bearing bush of railway locomotive and vehicle, transmission shaft of machine seat frame and so on.
QT500-7 Chemical composition:
Carbon C: 3.6-3.8
Silicon Si: 2.5~2.9
Manganese Mn lt; 0.6
Sulfur S lt; 0.025
P P lt; 0.08
Magnesium Mg: 0.03-0.05
The content of rare earth RE was 0.03-0.05
Mechanical properties
Tensile strength σb (MPa) : ≥500
Conditional yield strength σ0.2 (MPa) : ≥320
Elongation δ(%) : ≥7
Hardness: 170 ~ 230HB
Heat treatment specification:
(determined by the Supplier, the Following is the Heat Treatment Specification of a Sample, for Reference) 920℃
Annealed Microstructure:
Ferrite + Pearlite.
Surface Quenching:
In Order to Improve the Surface Hardness, Wear Resistance and Fatigue Strength of Some Castings, Surface Quenching Can Be Used.
Gray Cast Iron and Ductile Iron Castings Can Be Surface Quenched. Generally, High (medium) Frequency Induction Heating Surface
Quenching and Electrical Contact Surface Quenching Are Used.
Chemical Heat Treatment
For Castings That Require Surface Wear Resistance or Oxidation Resistance and Corrosion Resistance, Chemical Heat Treatment
Processes Similar to Steel Can Be Used, Such As Gas Soft Chlorination, Chlorination, Boronizing, Sulfurizing and Other Treatments.
Customized according to requirements

Our Advantages

Company Profile

Baotong (Shandong) Import and Export Co., Ltd. is located in Liaocheng Economic Development Zone, Shandong Province. Is a collection of steel processing and sales, warehousing logistics as one of the specialized steel logistics enterprises. The company
with a sincere attitude to make friends, the lowest price to the profit to customers, with enthusiasm to serve the society.
Companies adhere to the "customer first, integrity first" business philosophy! The company mainly engaged in: sGrey cast iron,Ductile iron, seamless pipe, aluminum plate, etc. Annual inventory of more than 1000 tons, annual sales of nearly 50,000 units. More than tons. In the new era and geographical background, Baotong Steel will take every customer's demand as its own responsibility, seek efficiency through management, promote development through innovation, and work hand in hand with customers and all walks of life to create great cause.


Cast Iron Profile Application Field Hydraulic
1. Valve: Stack Valve, Combination Valve, Pressure Reducing Valve, Relief Valve, Solenoid Valve, Bottom Plate, Hydraulic Integration Block, Etc.
2. Cylinder: Piston, Top Cover, Hydraulic Cylinder End Cover, Guide Sleeve, Etc. Machine Tools and General Machinery
3. Machine Tool: Side Plate, Back Plate, Sleeve, Piston, Cylinder End Cover, Pin, Spring Clip, Jacket Chuck, Top, Gear, Shaft Sleeve, Flange, Coupling, Rack, Chuck, Dial Seat, Clutch, Guide Rail, Etc.
4. Injection Molding Machine: Valve, Integrated Block, Oil Cylinder, Fixed Side Plate, Movable Side Plate, Injection Plate, Etc.
5. Printing Machinery: Mixing Ink Roller, Ink Rail, Guide Plate, Gear, Etc.
6. Civil Machinery: Valve, Cylinder Piston, Integration Block, Etc.
Textile Machinery: Gear, Bearing Housing, Balance Block, Tube, Bearing, Cross Slider, Bearing Pad, Cam, Etc. Agricultural Machinery: Cultivator Pulley, Piston, Top Cover, Bearing Pad, Combine Harvester Pulley, Etc. Power Plant
7. Automobile: Shock Absorber, Valve, Duct, Mechanical Seal, Bushing, Liner, Balance Block, Bushing, Etc.
8. Marine: Oil Separator, Cylinder, Piston, Valve Guide Sleeve, Engine Stem Sleeve, Cylinder Body Parts, Etc.
9. Overweight Machine: Pulley, Bushing, Bushing, Etc.





1. Question: Are you a trading company or a manufacturer?
Answer: We are a manufacturer.
2. Q: What is the minimum order quantity?
Answer: If you insist on buying one piece, or you only need one piece, we are likely to produce MOQ for you in batches.
3. Q: How to get samples to check the quality? How long can I get the samples?
Answer: After the price is confirmed, samples can be provided for your evaluation. After confirming the sample details, the
samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
4. Q: Which payment method does your company accept?
Answer: We accept wire transfer, letter of credit, Western Union.
5. Q: What are your company's shipping terms and delivery time?
Answer: 20-30 days for bulk, 5-10 working days for inventory.
6. Q: Do you have a discount?
Answer: We will do our best to provide you with these services at the best price and quality service

0.0138 s.