As the first production invested by SHINESTAR HOLDINGS GROUP, we know spiral welded pipe than other supplier in China. Below is the production process for ssaw steel pipe which is manufacturered through submerged arc welded technology.
Spiral Sub-merged Acr Welding Process
Material Inspection (Steel Pipe) --- Coil Preparation --- Hot Rolled Coil --- Sub Pinch Roll --- Flattening --- Shear --- Skelp End Welding --- Leveling --- Drive Rolls --- Side Trimming --- Edge Milling --- Forming Rolls --- Inside Welding --- Outside Welding --- Ultrasonic Inspection --- Plasma Cutting --- Slag Removing --- Primary Visual Inspection --- X-Ray Inspection --- End Facing --- Hydrostatic esting --- Final Visual Inspection (Testing Lab) --- Customer Inspection --- Weighing and Stenciling --- Pipe Storing Shipping
