| Customization: | Available |
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| Certification: | ISO |
| Surface: | Spiral |
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Production process of spring steel wire
Material Selection and Pretreatment: We begin with selecting the finest high carbon steel or alloy steel, globally recognized for their outstanding elasticity and strength. The preprocessing stage involves precise heating and rolling techniques to enhance microstructure and mechanical properties meticulously, laying the groundwork for superior quality and performance.
Step One
Surface Treatment: Our advanced surface treatment stage employs specialized techniques such as acid pickling, phosphating, or mechanical methods, expertly chosen to eradicate iron oxide scale, form a protective phosphating film, or ensure a pristine, smooth surface. Particularly for spring steel wires with high fatigue life requirements, such as valve spring steel wires, surface peeling of the coil is essential to minimize defects and ensure longevity.
Step Two
Wire Drawing: The wire drawing process expertly reduces the steel wire's diameter through a series of successive cold drawing stages, significantly enhancing its strength and hardness. For high-strength spring steel wires, maintaining the outlet temperature below 150 ºC during each drawing pass is crucial to prevent strain aging and torsional cracks. Effective lubrication and cooling play vital roles in controlling temperature increases and ensuring product quality.
Heat Treatment: This critical phase involves sophisticated quenching and tempering techniques. Carbon steel spring steel wires generally undergo lead bath quenching for a refined pearlite structure, while alloy steel wires benefit from annealing, and stainless steel wires utilize solid solution processes. The oil quenching process can be augmented with water quenching or water quenching with polymers to achieve superior results.
Step Three
Forming: With state-of-the-art precision equipment, we expertly wind the drawn steel wire into a diverse range of spring shapes, including compression springs, tension springs, and more, catering to a wide array of application needs.
Inspection and Packaging: Through rigorous testing protocols, we ensure each spring steel wire satisfies stringent international standards. We then employ safe and secure packaging techniques to preserve product integrity and guarantee safety during transportation and storage.
Spring steel wire is a meticulously engineered steel wire used in crafting springs or model parts, with diverse applications spanning mattress springs, subtractors, suspension springs, engine valves, and camera shutters. Quality requirements vary across types, including raw drawn, lead quenched, galvanized, and oil quenched spring steel wire, each designed to fulfill specific application needs and ensure optimal performance.
| Steel Grade GB Standard |
Carbon % |
Silicon % |
Manganese % |
Phosphorus % |
Sulphur % |
Chromium % |
Nickel % |
Cuprum % |
| 60# | 0.60-0.61 | 0.18-0.22 | 0.52-0.59 | 0.012 | 0.007 | 0.06-0.07 | 0.05 | 0.18 |
| 65# | 0.65 | 0.21 | 0.56 | 0.013 | 0.008 | 0.05 | 0.04 | 0.14 |
| 65Mn | 0.60-0.70 | 0.10-0.25 | 0.70-1.00 | 0.030 | 0.030 | 0.20 | 0.20 | 0.25 |
| 70# | 0.69-0.71 | 0.19-0.21 | 0.53-0.58 | 0.010-0.012 | 0.003-0.006 | 0.01-0.05 | 0.02-0.04 | 0.04 |
| 72A 72B | 0.72 | 0.19 | 0.71 | 0.013 | 0.006 | 0.02 | 0.02 | 0.03 |
| 80# | 0.80-0.81 | 0.22-0.24 | 0.59-0.76 | 0.008 | 0.004 | 0.04 | ||
| 82A 82B | 0.82 | 0.24-0.25 | 0.76-0.77 | 0.011-0.014 | 0.004-0.007 | 0.17-0.17 |
Tianjin Kaishuo Weiye Steel Co., Ltd. stands as a beacon of excellence and innovation in the global steel manufacturing arena. Our unwavering dedication and professional prowess shine through in every facet of steel production. We proudly offer a comprehensive range of products, including galvanized and pre-painted galvanized steel coils, alongside an extensive selection of steel pipes and plates. Our stainless steel assortment is unparalleled, featuring premium sheets, pipes, profiles, bars, and coils. With a strategic presence bolstered by four branch offices across China and our headquarters in the vibrant city of Tianjin, we are at the heart of our operations. Over the years, we have cultivated strong alliances with industry titans like TISCO, BAOSTEEL, and POSCO (ZPSS), solidifying our status as a top-tier steel supplier. Our expansive inventory, exceeding 2,000 tons and featuring over 800 unique specifications, is a testament to our capability. Our products enjoy widespread acclaim not only throughout China but also in prestigious international markets, spanning regions from Saudi Arabia to Colombia. Our steadfast dedication to excellence is unwavering and resolute.
Our commitment to rigorous quality control and exceptional customer service is unyielding, with our team of seasoned experts poised to exceed your expectations and ensure your utmost satisfaction. We are passionately expanding our global presence and are excited about the prospect of forming long-term partnerships. If you envision a collaborative future with us, we warmly invite you to explore potential opportunities. We extend a cordial invitation to visit our state-of-the-art production facilities at your leisure, offering you an exclusive glimpse into our advanced operations.
1. Our company, Tianjin Kaishuo Weiye Steel Co., Ltd., boasts expansive and advanced manufacturing facilities located in the thriving regions of Shandong, Hebei, and Zhejiang, China. Each facility spans a vast area of approximately 70,000 square meters, equipped with cutting-edge processing equipment such as large shearing machines, circular shearing machines, straightening machines, annealing furnaces, and punching and shearing production lines. This ensures precision and efficiency in our production process.
2. With an impressive annual inventory exceeding 10,000 tons, we are fully equipped to meet and exceed the demands of our global market customers. Our extensive sales network, which spans more than 100 countries including Brazil, Peru, Cameroon, Senegal, Ghana, Botswana, Samoa, Russia, Thailand, and India, ensures that we deliver our high-quality 50crva wire wherever it's needed with unparalleled reliability.
3. Our products, including the exceptional High Quality 50crva Wire for Reliable Spring Production, have earned prestigious certifications such as ISO9001, SGS, JIS, and BV. Each product comes with a detailed product inspection report, providing our customers with the assurance and confidence they need for their own stringent quality checks.
4. With a robust and readily available inventory, we offer the convenience of immediate shipment for orders, supported by our dedicated 24/7 online service. Our professional sales and after-sales service team is committed to delivering swift and effective solutions to a wide variety of inquiries and challenges, ensuring your satisfaction every step of the way.
5. We pride ourselves on a rigorous quality control system, allowing us to customize products precisely to your specifications without compromising on quality or price. With competitive pricing and exceptional quality, reach out to us today to inquire and benefit from exclusive discounts tailored just for you.
1. who are we?
We are based in TianJin, China, start from 2021,sell to Africa(20.00%),Mid East(15.00%),South America(10.00%),Eastern Europe(5.00%),Southeast Asia(5.00%),Oceania(5.00%),Southeast Asia(10.00%),Central America(5.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Cold Rolled Steel Coil,Steel Pipe,Galvanized Steel Coil,Stainless Steel Plate/Sheet,Seamless Steel Tube
4. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese,Spanish,Portuguese,French,Russian
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