what is meant by seamless pipe

{"title":"P9 ALLOY STEEL SEAMLESS PIPE ASTM A335 \/ ASME SA335 BLACK COATING","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/40\/c4\/903a5ca2630df73989324130a826-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"YUHONG","Model Number":"ASTM A335 P9","Minimum Order Quantity":"100KGS","Delivery Time":"Depends on quantity","Certification":"ABS, BV, DNV, GL, LR, SGS, IEI","Place of Origin":"CHINA","Payment Terms":"T\/T, L\/C AT SIGHT","Supply Ability":"100 tons per month","Packaging Details":"According to client requirements\/wooden case packing","Standard":"ASTM A335","Length":"Single Random, Double Random & Cut Length.","Surface":"Black\/Vanish","OD":"1\/2\" TO 24 \"","END TYPE":"PLAIN\/BEVELED","Alloy or not":"Is Alloy"}}

{"title":"Alloy Steel Seamless Boiler Tube ASTM Standard CE approval","imgUrl":"https:\/\/img.silkroadsl.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"}}