Type: Boiler and Heat Exchanger ERW Tube Material Grade: ASTM A178 Gr.A Size: 101.6x6.35mm Surface Treatment: Black Painting/Oil Coating, etc. Application: Used in Boiler and Heat Exchanger, etc. Packing: In Bundles Case or as Your Requirement. Payment Terms: TT/LC, West Union, Paypal and O/A. Delivery Time: 7-25 Days after Received the Deposit.