... :30days Carbon steel spiral pipe SizeOD:15mm-200mm WT:0.6mm-6.0mmLength5M-12M or accord to client's reqiurment MaterailQ235 ,Q345 ,API 5L ... GrB ,10#,20#,45# and so onStandardASTM A252 ,API 5L ,GB/T 9711,DIN10208UsageUsed for gas ,oil,water ,constructionEndsBeveled , ... the customers' requirementsInspectionWith hydraulic testing,eddy current,infrared test Sprial steel