what is meant by seamless pipe

{"cid":"91034025","title":"ASME SA335 P9 K90941 Ferritic Alloy Steel Seamless Pipe for Thermal Power Generation","imgUrl":"https:\/\/img.ismap.com\/nimg\/82\/11\/17cc0fcd4657aaa274dd5de09df7-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"YUHONG","Model Number":"ASME SA335 P9 K90941","Minimum Order Quantity":"1000KGS","Delivery Time":"10days->","Certification":"ISO9001-2008, PED, AD2000, LR, API 5L","Place of Origin":"CHINA","Payment Terms":"T\/T, L\/C","Supply Ability":"1500 Tons per Month","Packaging Details":"Ply-wooden Case \/Iron Case\/ Bundle with plastic Cap","Standard":"ASME SA213","Grade":"P9, K90941","Manufacture":"Cold drawn","Test":"Hydrostatic Test, , Mechanical Test(Hardness Test, Transverse Test, Longitudinal Tension Test, Flattening Test, Bend Test)","Nondestructive Examination":"Practise E213, E309, E570"}}

{"cid":"91220317","title":"Alloy Steel Seamless Boiler Tube ASTM Standard CE approval","imgUrl":"https:\/\/img.ismap.com\/nimg\/88\/24\/05e568ea1dbd138da5dd7dda14bc-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"SAT-CHAM","Model Number":"Boiler Steel Tube","Minimum Order Quantity":"1 Set","Delivery Time":"30 Days","Certification":"ISO CE","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"1000 Ton\/Tons per Year","Packaging Details":"Seaworthy packing","Special Pipe":"API Pipe, EMT Pipe","Tolerance":"\u00b11%","Oiled or Non-oiled":"Non-oiled","Invoicing":"by theoretical weight","Alloy Or Not":"Is Alloy","Processing Service":"Bending, Welding, Decoiling, Punching, Cutting"}}