In industrial equipment, high-speed rail, wind energy and critical engineering applications, the reliability of fastening connections plays a vital role in ensuring safe and stable operation. Compared with ordinary flat washers, anti-loosening lock washers provide enhanced vibration resistance and locking performance through special structural designs. Products such as DIN25201 Wedge Lock Washers, DIN6798 Tooth Lock Washers and NFE25-511 Lock Washers are widely used in industrial machinery, railway systems, automotive applications, renewable energy equipment and other demanding environments where reliable fastening is required. Read More

Ningbo Yinzhou Zhenhua Stamping Co., Ltd. will exhibit at the Shanghai International Fastener Expo, showcasing its core product lines including DIN 6798 serrated lock washers, NFE 25-511 safety washers, wave spring washers, disc spring washers, and custom metal stamping components. As a professional manufacturer of fastening and stamping solutions, Zhenhua serves industries such as automotive, renewable energy, power equipment, railway transportation, and industrial automation worldwide. Read More

Engineered fastening solutions for Indonesia’s infrastructure development. Zhenhua Stamping supplies high-performance bolts, anti-loosening washers, and corrosion-resistant fastening systems designed for bridges, railways, ports, and photovoltaic projects in tropical and coastal environments. Improve structural stability, reduce maintenance cost, and ensure long-term safety with ISO-standard industrial fasteners from a professional Chinese manufacturer. Read More

Zhenhua Stamping offers high-strength, corrosion-resistant and anti-loosening fasteners for Indonesia infrastructure. Ideal for buildings, bridges, PV stations and port projects to ensure long-term structural stability. Read More

Stainless steel is a kind of material with brightness close to mirror surface, tough and cold to the touch. It is a relatively avant-garde decorative material with excellent corrosion resistance, formability, compatibility and toughness. It is used in heavy industry and light industry. , Daily necessities industry and architectural decoration industries. Read More

Martensitic stainless steel is 13% Cr steel, commonly known as 420 stainless steel. 420 stainless steel is \"cutting tool grade\" martensitic steel, similar to the earliest stainless steel such as Brinell high chromium steel. 420 has a certain degree of wear resistance and corrosion resistance, high hardness, and its price is the lower category of stainless steel balls. It is suitable for working environments that generally require stainless steel. The improvement of standard martensitic steel contains additional elements such as nickel, molybdenum and vanadium. The corrosion resistance of martensitic stainless steel comes from \"chromium\", which ranges from 11.5 to 18%. The higher the chromium content, the higher the carbon content is required to ensure the formation of martensite during heat treatment. Read More

It can be divided into Cr series (400 series), zhiCr-Ni series (300 series), daoCr-Mn-Ni (200 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening series (600 series). Stainless steel is often divided into martensitic steel, ferritic steel, austenitic steel, austenitic-ferritic (duplex) stainless steel and precipitation hardening stainless steel according to the state of organization. In addition, it can be divided into: chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel. Read More