Semi-Autic The raw materials are made by coiling, annealing, pickling, and wire drawing. The lower the content of Al and Cu, the better the performance
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DIN933 China manufacturer High strength hex head bolt Grade 8.8
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Meorient Import & Export Co.LTD
China - Hangzhou
Trading Company
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
5-10人
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
Certifications
Product Specifications
--Product Description
Product Description
Products Description
1.Stainless Steel:SUS302,SUS304,SUS316,SUS201,etc | |
2.Carbon steel:1018,1022 etc | |
3.Alloy Steel:Titanium Alloy,10B21,435,40Cr etc | |
4.Aluminum or Aluminum Alloy | |
5.Brass | |
Hardness | Vickers hardness: HV350-450; HV400-550; HV450-700; Rockwell hardness:Grade8.8 HRC22-32; Grade10.9 HRC32-39; Grade12.9 HRC39-44 |
Surface treatment | Zinc,Nickel,Bronze,Copper,Phosphate,Oxidation black,Passivation, Tin,Dacromet,Gold,Chrome,Sliver,Phosphonrization,Zinc-nickel alloy plated etc. |
Standard | DIN,GB，ISO,ANSI,BS,JIS etc |
Logo | If you need, we provide logo customization service |
Sample | If we have stock, we can provide free samples, but buyers need to pay for shipping |
Certifications | ISO9001 |
RoHS | Meet the EU standards. |
Price terms | FOB,EXW,CIF,DAP ect |
Payment terms | mastercard/ VISA/ Online bank Payment/ Pay Letter/ T/T / L/C |
Delivery method | By Express Courier, such as DHL,Fedex, UPS, TNT, EMS etc;By Air, by land or by Sea |
Port of loading | Guangzhou or Shenzhen |
Delivery date | Spot/Sample: 3-6 days Production goods: 10-25 days |
Ordinary packaging, wooden box packaging, small carton packaging |
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Manufacturing Technique
2. COLD HEADING
The principle of screw forming is to perform cold or hot multi-station upsetting according to the plastic deformation of the metal to meet the shape and size requirements of the required parts. It is characterized by less cutting or no waste, low cost, high efficiency, and high finish. Compared with cutting processing, its output has high strength.
The principle of thread rolling is to use the plasticity of metal to roll the formed semi-finished products to achieve the required thread specifications. The tooth rolling machines currently used by our company are flat reciprocating tooth rolling machines produced in Taiwan. With good accuracy and high efficiency, it is in the forefront of the domestic industry.
Heat treatment can change the mechanical properties of screws by increasing the carbon content or quenching and tempering.
5. ELECTROPLATING
In order to meet the customer's requirements, the surface treatment can also increase certain properties of the screw. Such as anti-rust, beautiful, etc.
The quality of electroplating is mainly measured by its corrosion resistance, followed by appearance. Corrosion resistance is to imitate the working environment of the product, set as the test condition, and perform corrosion test on it.
Pack the products in boxes/bags according to standards or customer requirements.
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