ravansanaat
Ravan Sanat Production & Trading Group manufactures steel bolts and nuts in compliance with international standards ISO 898-1 and ISO 898-2. The products are made from carbon steel grades 8.8, 10.9, and 12.9, with tensile strength ranging from 800 to 1200 MPa. Strict quality control ensures dimensional tolerance per ISO 4759-1 Class B medium. Thread pitches are produced according to DIN 13 metric and ANSI/ASME B1.13M unified inch standards. The group supplies nylon and metallic lock nuts capable of retaining 70% of preload torque under vibration. Anti-corrosion coatings include hot-dip galvanizing 50 microns and dacromet.
The groups modern production line enables the manufacturing of special fasteners like socket head cap screws, stud bolts, and flange nuts. Production diameters range from M4 to M64 in standard lengths up to 300 mm. Heat treatment processes such as quenching and tempering ensure uniform mechanical properties across all batches. Quality control tests include tensile strength testing, Rockwell hardness measurement, and corrosion resistance evaluation in a 5% salt spray. Catering to heavy industries like oil, gas, and steel structures, the group provides certified Material Test Reports MTR and certificates of conformity. Packaging is done in moisture-resistant ca
