Finishing(Black) Painting, Galvanizing, Elctro-platingTypeBanded,Beaded StandardISO5922/IS049/ISO7-1 , BS EN1562:1997, DIN 2950/1692/2999Mechanical PropertiesTensile Strength≥330MPA, Elongation rate≥8%, Hardness≤HB150Mechanical PropertiesC:2.4~2.9 Si:1.2~1.7Mn:0.3~0.55P:0.12 S:0.18 Cr:0.09Working pressureMax 1.6MPAWorking temperatureMax 200°CProducing ProcessPattern making - sand casting - heat treatment - galvanizing - threading - air pressure testing - packingUsageFro pipeline convey water ,oil ,gas and so onTesting100% Air pressure testing