... " WT:2.5~60mm Standards:ASTM A53/ASTM A106/API 5L/API 5CT/JISG3452 /JISG3454/DIN1629 Gr,A,B ... ,X42,X46 Seamless pipeOD:Various from 3/4" to 48"WT:Various from 2.5mm to 60mmMaterial: ASTM A53, ASTM ... St52, GB8162, GB8163, GB9711.1-1997, GB3087 Standards:ASTM, API, JIS,DIN, BS,GB, CNSSurface: Varnish coating ... tube, ERW pipe and fittings, please feel free to contact us. API 5L/5CT ASTM A106 GR.B/A53 GR ...