
Sieve Bends and Boxes
We are an energetic company with wide market for diamond oil-spring steel wire factory, tempered spring steel wire ASTM-A230-99, 50crva spring steel wire factory. In recent years, our company has continuously adjusted its product structure and made a lot of efforts to optimize and improve product quality. We are always committed to providing customers with cost-effective and high-quality products as well as perfect after-sales service. Since our establishment, we have always adhered to the enterprise spirit of 'innovation, pragmatism, tenacity, and enterprising' and the business philosophy of winning the market with integrity and solid management to fully realize the social value. The scale of our company is gradually expanding, and the product technology is constantly updated and improved. We are constantly expanding the range of products the company manages, and we are learning from the high quality of the products on the market.
Shaped steel wire (flat wire for internal combustion engine)
Use
This product is suitable for the manufacture of internal combustion engine piston ring, ring and the combination of oil ring with flat steel wire.
Classification and code
Cold drawing (rolling): L oil quenching - tempering: Zh
K categories: ring, piston ring with straight side flat wire (Figure 1)
Y: combination of oil ring with curved flat steel wire (Figure 2)


K type Y type
Size, shape and tolerances
| K type steel wire | Y type steel wire | ||||
Size | Allowable deviation | Size | Allowable deviation | ||
Thickness h | 1.0~3.0 | ±0.03 | Thickness h | 0.5~1.0 | 0-0.03 |
>3.0~6.0 | ±0.04 | Width b | 1.0~3.0 | 0-0.08 | |
Width b | 6.0~8.0 | ±0.09 | >3.0~6.0 | 0-0.10 | |
Note: the radius of the side of the arc radius R and fillet radius r generally do not do acceptance basis, such as the special requirements of R, the need to negotiate in the contract specified
Mechanical properties
Type of wire | tensile strength,N/mm2 | Repeated bending is not less than | ||
Group A | Group B | Group C | ||
K type | 785~980 | 980~1175 | 1175~1370 | 3 |
Y type | 1275~1470 | 1420~1615 | 1570~1765 | 2 |
Note: The steel wire used 65mn or 70 steel, according to user requirements, but also other tensile strength of delivery
Surface Quality
Steel wire surface should be smooth, no cracks, rust, folding, knot and other defects, but allowed to temper the thickness of the oxide film and the depth of not more than half of the local tolerance
Marks, pits exist。
Decarburization layer
The total decarburization depth of one side is not more than 2% h
Delivery Method
Steel wire to roll the state delivery
With wide experience and expertise, Friend Metal is engaged in the developing, manufacturing and marketing of oval-shaped square-shaped trapezoidal triangle hexagonal diamond-shaped c-shaped d-shaped non-standard oil quenching tempering spring steel wire ASTM-A230-99, ASTM-A401, EN10270-2, JIS G3561. As a professional manufacturer, we now brings you high quality various steel wires made in China which comes in high strength, well toughness and excellent wearing resistance. We also welcome your customized orders.
With the help of various marketing activities and broadcasting channels, the sales volume of our high-tech and high-quality Sieve Bends and Boxes has increased significantly. In the future, we will take the building of a national brand as our own responsibility, make full use of our own brand and technical resources, and strive to become a first-class brand. We warmly welcome your participation based on mutual benefits in the near future.
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