... . Quick Details Standard:BS, GB, DIN, ASTMStandard:BS EN10219, BS EN10217, GB/T 9711.1-1997, GB/T 3091-2001, GB/T 9711.2-1999, ASTM A53 ... 5L PSL2, API 5CT, ASTM A53, EN10217 and EN10219 ,GB/T 9711.1,GB/T 9711.2 or other equivalent standards. Mill Test Certificate ... , X-ray .Payment100% irrevocable L/C at sight or 30% T/T in advance and 70% against faxed B/L.Originchina CertificationAPI ...