YONGJIN Jiangsu: CSP Spring Steel & Precision Cold-Rolled Hub
Jiangsu Yongjin Metal Technology Co., Ltd.
Established Nov 2010 in Nantong High-Tech Development Zone. Registered capital RMB 500 million, 364,000 m² site, 8 self-developed YJ1350 twenty-high reversible cold-rolling lines, 500,000 tons annual capacity.
⚙️ 8 × YJ1350 20-Hi Mills
🎯 Primary CSP Spring Strip Hub
✅ ISO 9001 (22 Protocols)
Base at a Glance
The Core Hub for CSP Spring Steel Strips
Jiangsu Yongjin is the primary manufacturing base for YONGJIN’s premium CSP (Cold Rolled Stainless Steel for Springs) products. The vast majority of our monthly 4,000-7,000 MT ready stock is produced right here, leveraging our proprietary 20-high reversible cold-rolling mills to achieve micron-level precision and flawless surface consistency for global buyers.
Precision Tolerance
±0.001mm
Proprietary YJ1350 20-high mill tech
Surface Finish
Ra 0.25-0.40 μm
2D / 2DD finish for stable stamping
Technological Leadership
Self-Developed Mills
YJ1350 20-Hi ×8
50% lower cost vs imported lines
Product Mix
300: 2B/2D/BA
400: 1D/BA, soft & hard tempers
Green Process
Acid-Free Treatment
Jiangsu Provincial S&T Award winner
Brand Trust
Huawei / Midea / Whirlpool
Tensile 600-2,100 N/mm²
Stock Ready for Dispatch
Source CSP & Precision Steel from YONGJIN Jiangsu
📩 morgan@yongjinss.com | WhatsApp / Zalo +86 177 2277 5646