Wrougth Steel Butt-Welding Fittings(Carbon & Alloy Steel)NomenclatureKS : Korean Indutrial StandardsJIS : Japanese Industrial StandardsASTM : American Society for Testing and MaterialsJIS : Japan Pertoleum InstituteMSS : Manufacturers Standardization SocietyAWWA : American Water Works AssociotionDIN : Deutsches Institut fur NormungB.S : British StandardsASME : American...
