ERW carbon steel round tubing from 1″ to 3½″ OD, wall .035″–.250″, in mill lengths 5–40 ft — manufactured to ASTM A513, A500, A787, or A1076 on five tube mills in Mansfield, Ohio, with nationwide delivery.
| OD | A513 Mechanical ± | A500 Structural ± |
|---|---|---|
| 1″ | 0.005″ | 0.5% of OD (0.005″) |
| 1½″ | 0.005″ | 0.5% of OD (≈0.008″) |
| 2″ | 0.005″ | 0.75% of OD (0.015″) |
| 2½″ | 0.006″ | 0.75% of OD (≈0.019″) |
| 3″ | 0.008″ | 0.75% of OD (≈0.023″) |
| 3½″ | 0.009″ | 0.75% of OD (≈0.026″) |
Per ASTM A513-24 Tables 4/10 and ASTM A500/A500M-23 Section 11.1.1 (A500 values calculated from the published percentage). Wall thickness ±10% of nominal in both specs. Full tables on the A513 and A500 spec pages · gage-to-decimal reference.
Finishes: hot rolled, HR pickled & oiled, cold rolled, galvanized G30–G210, galvannealed, aluminized, and UV coated. Also available in square and rectangular profiles.
Mechanical tubing, Type 1 & 2. Automotive components, OEM parts, conveyors.
Structural HSS, Grade B & C. Columns, supports, general structural rounds.
Galvanized mechanical. Hand rails, fence posts, outdoor equipment.
Galvanized structural. Round Grades 33/42/46 for outdoor structures.
Rounds from 1″ to 3½″ OD, wall thickness .035″–.250″, in mill lengths from 5 to 40 ft, on five ERW tube mills in Mansfield, Ohio.
A513 mechanical holds ±0.005″ on rounds from 1″ to 2″ OD, stepping to ±0.009″ at 3½″. A500 structural allows ±0.5% of OD at 1.900″ and smaller, ±0.75% at 2.000″ and larger. Wall tolerance is ±10% of nominal in both.
.035″ to .250″ overall. In A513, Type 1 (hot-rolled) covers 0.065″–0.250″ and Type 2 (cold-rolled) covers 0.035″–0.134″ — so light walls run Type 2 and heavy walls run Type 1.
A513 round straightness is held to 0.030″ over 3 ft per ASTM A513-24.
A truckload — roughly 45,000 lb. Send your spec and quantity with your RFQ and we'll confirm, along with current lead time.
Send your spec, OD, wall, length, and quantity — we'll get a quote back fast.
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