China 309 stainless steel foil Manufacturers,Suppliers, Factory

Ningbo Qihong Stainless Steel Co., Ltd. specializes in precision stainless steel foil sheets and rolls, which are ultra-thin stainless steel sheets typically ranging in thickness from 0.01mm to 0.5mm. These thin, pliable, and robust foil sheets offer exceptional corrosion resistance and find versatile applications in industries such as aerospace, electronic communications, optoelectronics, the chemical sector, medical applications, and beyond. As human science and technology continue to advance, stainless steel foil sheets are poised for even greater significance in future developments.

Ultra thin stainless steel strip is a core precision metal material featuring ultra-thin thickness, high flatness, excellent corrosion resistance and stable mechanical properties, widely applied in consumer electronics, new energy, medical devices, aerospace and high-end architectural fields. As a professional manufacturer focusing on precision stainless steel materials, Qihong relies on advanced rolling technology, complete testing systems and standardized production processes to produce high-precision ultra-thin stainless steel strips covering 200, 300 and 400 series steel grades. All products are produced in the independent production factory located in Ningbo, strictly compliant with international quality standards, and solve the precision material demands of high-end industrial manufacturing. This paper comprehensively introduces Qihong’s ultra-thin stainless steel strip from product specifications, core advantages, practical application cases, and common customer questions, demonstrating its reliable product strength and industry applicability in China and global markets, and fully reflecting the professional service capability of a high-quality industrial supplier .

Qihong, a leading China manufacturer and supplier, produces the flagship Stainless Steel Spring Strip Coil in-house. With advanced factory equipment and strict quality control, we deliver high-quality, cost-effective coils in 200, 300, 400 series. Thickness 0.03–3.0 mm, width 3–600 mm, adjustable hardness 1/2H–SH. Ideal for automated stamping, electronics, automotive, medical; supports ASTM, JIS, GB standards, stock or custom orders.

Ningbo Qihong Stainless Steel Co., Ltd. specialized in precision stainless steel strip, the main products are: 304 semi-hard cold-rolled stainless steel strip (1/2H, 3/4H), 304 stainless steel strip and 304L stainless steel strip. Wholesale high quality 304l Stainless Steel Strip made in China from Qihong. The width of the stainless steel strip can be customized according to customer needs, and the physical properties and surface state of the stainless steel strip can also be customized according to customer needs.

High Strength Stainless Steel Foil from Qihong covers 301, 304 and 316L in 0.01-0.30 mm thickness and 1.5-600 mm slit width, in 1/2H to H temper for springs and shielding. The Ningbo manufacturer rolls and slits in house, with a test certificate on every batch.

Ningbo Qihong Stainless Steel focuses on the research and manufacturing of high-strength stainless steel strips. Leveraging years of precision machining experience and a complete supply chain system, we have created martensitic hardened stainless steel strips that meet the high-end needs of various industries. Our Hardened Stainless Steel Strip is based on high-quality materials such as 420 (3Cr13), 440A, and 440B, and is meticulously crafted using our proprietary and mature quenching and tempering heat treatment process. It combines high hardness, wear resistance, and basic corrosion resistance, precisely matching the core component manufacturing needs of medical devices, precision electronics, high-end cutting tools, and other fields, providing customers with highly stable and adaptable precision material support.