COLD DRAWN SEAMLESS is made from1026 (UNS G10260) steel in sizes through 9½'' OD, from .28max.carbon steel in sizes over 9½'' OD. Produced to OD and ID dimensions, except as noted in size listing. Furnished in as drawn condition.Cold Drawn seamless offers good surface quality and increased mechanical properties over hot finished seamless tubing. Meet ASTM A519. Stocked in lengths of 8 to 24 ft.
HOT FINISHED SEAMLESS is made from 1026 (UNS G10260) steel. It is lower in cost than cold drawn and most applicable where precise dimensions and surface quality are of secondary importance. As an industry standard, HF seamless is manufactured to OD and wall dimensions. Meets ASTM A519. Stocked in lengths of 8 to 24 ft.
DOM (Drawn-over-mandrel) is a cold drawn electric resistance welded tube with allflash removed. Each tube is tested for soundness of weld. Preferred over seamless tubing for its excellent OD& ID concentricity. Normalizing and cold drawing over a mandrel makes DOM a uniform and precision product. Made from 1020 (UNS G10200) steel in walls 10 ga. and lighter; from1026 (UNS G10260) steel in walls heavier than10 ga. Furnished in as drawn condition. Manufactured to OD and ID dimensions except as noted. Meets ASTM A513 Type 5. Stocked in lengths of 8 to 24 ft.
BUTTWELD is produced from continuous welded pipe.Does not offer the inheren tstrength in the weld area of an electric resistance welded product. Made from low carbon SRA steel. Machinability and mechanical properties are reduced as a result of lower carbon content. MeetsASTM A512. Stocked in lengths of 8 to 24 ft.
ELECTRICAL RESISTANCE WELDED is produced from low carbon steel. Tubing with walls heavier than18ga. is produced from hot rolled steel; tubing with walls 18 ga. and lighter is produced from cold rolled steel. Furnished in as welded condition.OD flash removed on allsizes.
For round tubing1 OD and larger ID flash control led to .010 to .015 (depending on O.D.) Sizes under 1 OD and all square and rectangles are flash-in. ERW is the lowest cost of all mechanical tubing. Manufactured to OD and wall dimensions. Meet ASTM A513 Type1 (HR)
or Type 2 (CR). Stocked in 20ft. random lengths.