Size Range：1/2″ through 24″ Material：Carbon steel Finish：Plain or Galvanized, other finish available upon request. Service：Recommended for suspension of cold pipe lines or hot lines where no insulation is required. Maximum Temperature: Plain 750°F; Galvanized 450°F. Approvals： ● Complies with Federal Specification A-A-1192A (Type 4) WW-H-171-E (Type 4) , MSS-SP-69 & SP-58 (Type 4). ● FM approved (Sizes 3/4″ through 8″) ● UL/ULC Listed (Sizes 1/2″ through 12″)