API 5L ERW Pipe OD 21.3mm-----630mm WT 1.5mm----14mm Material Q235(B),Q345(B),#ETC Standard BS1387, ... Test, Chemical Analysis,Hardness Test,Charpy Impact Test,Metallographic ExaminationFinal Product TestHydraulic Test, On-line and off-line Ultrasonic Test,Tensile Test ,Yeild Strength,Elogation,Hardness Test ...