Large Diameter Spiral Steel Pipe/Tube is made by bending and welding of steel strip. It need to do water pressure, bending, flattening and other tests, there also are strict requirements on the surface quality, usually delivery length is 12 meters, often require the size of delivery.
Material:Q235A,Q235B,Q345B,Q345D, L245, L290, X42, X46, X70, X80
Length:12m or customized
Delivery time:15-30 days
Material Inspection-Vertical snip-Roll unfolding-Smoothing-Cutting and welding-Delivery-Molding-Inside and outside welding-Outside surface Inspection-Steel pipe
Amputation-Solder and clinker cleaning-Supplementary-UT inspection-X-RAY inspection-Inside surface inspection-Nozzle burnishing-Nozzle burnishing-Nozzle machining-Hydraulic pressure-Length and weight measuring-Finished product inspection-Oil coating-Making-Store up
Large Diameter Spiral Steel Pipe/Tube is mainly used in water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, is one of the twenty key products developed in China.For liquid transport: water supply and drainage.Gas transportation: gas, steam, liquefied petroleum gas.For structure: for pile driving pipe, as a bridge;Wharf, road, building structure pipe, etc.