... #-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, A53(A,B ... 5CT,EN10217,EN10219,ISO 9001,CE, Lloyds register,etc ERW WELDED PIPES