... to client's reqiurment MaterailQ235 ,Q345 ,API 5L GrB ,10#,20#,45# and so onStandardASTM A252 ,API 5L ,GB/T 9711 ... ,ERW,SSAWPaymentT/T or L/C DeliveryWithin 20-30days after received advance or LCMOQ20 TonsShipment Container or BulkShipment PortQINGDAOPackageBundle ,Bulk ,or According ...