C148 Test Methods for Polariscopic Examination of Glass Containers C336 Test Method for Annealing Point and Strain Point of Glass by Fiber Elongation C338 Test Method for Softening Point of Glass C598 Test Method for Annealing Point and Strain Point of Glass by Beam Bending C1048 Specification for Heat-Treated Flat Glass--Kind HS, Kind FT Coated and Uncoated Glass C1172 Specification for Laminated Architectural Flat Glass