... Gr B, 10, 20, 45, Q345 etc3. Tolerance: by the standard 4. Size: OD: 89mm-325mm, can be manufactured by ... Bundling: according to the customer's requirements6. Packing: standard Seaworthy Packing (NB: Coating against rust)7. Protection: supply varnish coating, bevel ... customers' requirement 13. Delivery Time: Min 30 Days after Receiving the Payments China high quality GB/T8162 Structural Steel Pipe