Signa

  • ASTM A193 A193M Standard Specification for Alloy-Steel and Diver Bolting for High Temperature or High Pressure Service and Other Special Propose
  • ASTM A320 A320M Standard Specification for Alloy-Steel and Diver Bolting for Low-Temperature Service
  • ASTM A325M-09 Standard Specification for Structural Bolts, Steel, Calor tractata 830 MPa Minimum Tensile Fortitudo
  • ASTM A563M Standard Specification for Carbon and Alloy Steel Nus (Metric)