Heavy Duty Steel Black Painting Marine Mining Chain

With continuous product innovation, we will develop newer, unique and exquisite 55Si7 Oil quenched and tempered spring steel wire, Square steel wire, 55crsi tempered spring steel wire to serve our clients. Until now our products are now moving on fast and very popular all over the world. We always pay high attention to putting the advanced managerial knowledge and manufacturing technique into practice.

0 si2mn, quenching temperature of 840 ° C to 870 ° C, after quenching hardness HRC > 60. 

Tempering temperature of 150 ° C, HRC61 hardness; 

Tempering temperature of 200 ° C, HRC60 hardness; 

Tempering temperature of 300 ° C, hardness HRC56; 

Tempering temperature of 400 ° C, HRC51 hardness; 

Tempering temperature of 500 ° C, HRC43 hardness; 

Tempering temperature of 550 ° C, HRC38 hardness; 

Tempering temperature of 600 ° C, HRC33 hardness; 

Tempering temperature of 650 ° C, hardness HRC29.

With wide experience and expertise, Friend Metal is engaged in the developing, manufacturing and marketing of 55crsi(sae 9254) oil tempered and quenched 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.

Adhering to your tenet of 'quality very first, client supreme' for Heavy Duty Steel Black Painting Marine Mining Chain. If you need to have any of our merchandise, or have other items to be produced, make sure you send us your inquiries, samples or in depth drawings. Our company's products sell well in overseas markets. In the face of fierce market competition, we will rely on excellent technology, high-quality talents, continuous innovation, satisfactory customer service, and continuous development of new products to meet market needs and continue to create value for customers.