Type: ERW Welded Carbon Steel Pipe Material and Grade: ASTM A53 GR.B Size: DN500 x SCH STD Surface Treatment: Oil Coating/Black Painting, etc. Independence Inspection: Chemical Test, Mechanical Test, etc. Application: For Oil, Gas, etc. Packing: Pallet/In Bundles with Steel Strips or as Your Requirement. Payment Terms: TT/LC, West Union, Paypal and O/A. Delivery Time: 7-25 Days after Receiving the Deposit.