... -2007, 10#-45#, 16Mn, A53-A369, API J55-API P110, Q195-Q345 1. HIGH QUANLITY2. API 5L STANDARD3. GR.B X-424,OIL ... steel ERW pipe2. Type : Weld3. Standard: EN10217.1, EN10219.1,API 5L ,ASTM A53,GB/T3091,GB/T9711,etc4. Grade : Q235B ... , Malaysia, Singapore, Vietnam,Thailand, Australia,Spain, Italy etc16. Certificate: API 5L,API 5CT,EN10217,EN10219,ISO 9001,CE, Lloyds register,etc ERW WELDED ...