chain , Iran

Grade 80 chains are manufactured from high-strength alloy steel with a minimum tensile strength of 800 N/mm². Wire diameters range from 6 to 32 mm with a precise pitch length of 3.15 times the wire diameter. Minimum breaking force varies from 28 to 800 kN depending on chain size. Working Load Limit is calculated with a 4:1 safety factor per ISO 1835 standards. These chains undergo controlled quench and temper heat treatment to achieve a high-toughness martensitic structure. Each chain undergoes full magnetic particle inspection MPI for surface defect detection.

The chain structure features flash butt welding with uniform, pore-free weld zones. Links are designed in a short oval shape with a 90-degree internal attachment angle for severe shock load resistance. Post-heat treatment surface hardness is maintained between 38 to 42 HRC Rockwell C. Surface coating is typically hot-dip galvanized 60–80 microns or electrostatic epoxy powder paint. These chains are suitable for operating temperatures from –40°C to 200°C without mechanical degradation. Production complies with ASME B30.9 and ISO 3077 standards for heavy-duty industrial, mining, and transportation applications.You can order and buy chain from Iran by contacting us through whatsaap and email.
WEBSITE: chain Iran