
Railway Track Square Head Sleeper Screw Spike. Comprehensive Customization: Customized sizes, materials, surface treatments, and head types available based on drawings. ISO Quality Certification: Fully controlled production under ISO9001-2008 system with railway product license. 100% Pre-Delivery Testing: All goods undergo 100% inspection before delivery to ensure quality standards. Wide Material Selection: Available in Q235, 10b21, Stainless Steel, 35#, 45#, 40Cr, and other grades. Diverse Surface Treatments: Options include Zinc, Bronze, Rainbow, Plain, Nickel, Passivated, and Hot-dip Galvanizing. Global Standard Compliance: Meets GB/T, JIS, ANSI, DIN, BS, UIC, AREMA, and ASTM standards. OEM and ODM Services: Capable of producing according to customer samples, technical drawings, and molds. High Strength Options: Available in grades 4.8 to 12.9 with tensile strength up to 100,000 PSI.