Manufacturing process of the butt-welding seamless elbow: Receiving inspecting---Cutting Shearing---Hot Forming / Cold Forming----Re-Forming-----Heat Treatment-----Shot Blasting----end Beveling-----inspection----Marking-----Coating-----Packing Wall thickness: From 3mm to 60mm Dimensions: Seamless:From DN 15 to DN 600 Welded: From DN 300 to DN 1500 Packing: Wooden cases, pallets or according to customers' requirements

Standar: ANSI B16.5 GB DIN JIS etc.