GLOBAL FASTENER SOLUTIONS
Precision Engineered for Every Industry
From raw materials to advanced surface treatments, Longshi provides customized fastening solutions that empower global infrastructure.
Our Core Manufacturing Lines
High-precision fasteners engineered for the most demanding industrial applications.
Hexagon Head Bolts
Studs & Threaded Rods
Hexagon Nuts
Washers
High-Quality Raw Materials
Carbon Steel
Sourced from premium steel mills, our carbon steel range includes Grade 4.8, 8.8, 10.9, and 12.9. It is the most versatile material for heavy-duty structural bolting and general industrial fasteners, offering an optimal balance of strength and affordability.
Alloy Steel
Our alloy steel selection is engineered for extreme environments. Featuring high tensile strength and fatigue resistance, these materials are ideal for high-pressure oil and gas pipelines, engine components, and critical machinery assembly.
Stainless Steel
We specialize in SS304 (A2-70) and SS316 (A4-80) stainless steel. These materials provide superior oxidation resistance and are essential for marine environments, food processing equipment, and chemical engineering where long-term durability is critical.
Titanium Alloy
Offering an exceptional strength-to-weight ratio, our titanium fasteners (Grade 2 & Grade 5) are designed for aerospace, racing, and medical industries. This material provides complete immunity to salt-water corrosion and extreme heat.
Brass & Copper
Chosen for their excellent electrical and thermal conductivity, our brass and copper materials are widely used in electrical engineering, plumbing, and decorative applications. They offer natural resistance to biofouling and antimicrobial properties.
Phosphor Bronze
Renowned for its toughness and low coefficient of friction, phosphor bronze is the ideal choice for springs, bushings, and fasteners that require high elasticity and resistance to chemical corrosion and wear.
Nickel Alloy
Specifically selected for petrochemical and power plant applications, our nickel alloys (such as Monel, Inconel) maintain structural integrity under extreme heat and highly corrosive chemical conditions that would destroy standard steels.
Special Grade / Custom Material
Longshi provides end-to-end custom material solutions. Whether you require specific chemical compositions or exotic superalloys not listed above, our engineering team ensures the material meets your exact project standards.