External diameter: Max.508mm(20inch), Steel grade: Max X80 Meet with API 5L, API 5CT ,ASTM A53 Grade A&B Description: ... : Max.Φ508mm(20inch) Steel grade: Max X80Steel material: Carbon steelMeet with API 5L, API 5CT,ASTM A53 Grade A&B standardRange ... , EFD AND CHINA BRANDHydraulic sytem meeting with DIN, JIS and GBElectrical system adopts PLC controller, meet with DIN, JIS and GBERW Pipe Mill ...