Non-seemless pipe is rolled from a flat piece of metal and welded lengthways to form the piping. Seemless pipe is extruded and has no seems and is generally stronger.
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The difference between seamless and welded (as it is commonly known) pipes is the welded joint along the longitudinal direction. Seamless pipes are manufactured by continuous extrusion process. Seamless pipes have greater bursting and tensile strength than the welded ones.
what is the difference between the PE pipe and HDPE pipe.
2 Pipes
SEAMLESS PIPE IS ALSO CALLED CDS PIPES (COLD DRAWN SEAMLESS PIPES). IT IS USED WIDELY IN MACHINING PARTS, SHAFTS, BEARINGS, CYLINDERS HAVING STRENGTH OF 75000 PSI TENSILE.. IT IS A SOLID CARBON STEEL ROD WHICH IS PUSHED ON TO THE MADREL TO FORM THE SHAPE OF TUBE. IT IS AVAILABLE IN DIFFERENT SIZES.
A106 is for pipes and A234 is for Fittings, as well as A105 are for forgings.