Drawn Over Mandrel
(DOM) Products
PTC manufactures premium DOM tubing products in a wide array of sizes and grades for agriculture, automotive, appliance, construction, recreation, and heavy truck manufacturing.
DOM mechanical steel tubing is manufactured from electrical resistance welded hollow tubing — further processed by cold drawing through dies and over mandrels — resulting in improved surface finishes, mechanical properties and dimensional accuracy. These characteristics, combined with reliable weld integrity, maximum concentricity, and minimal wall variation, create a high-quality, cost-effective choice for demanding applications and machined parts.
PTC has a unique capability with 14 weld mills and 25 draw benches in 6 locations.
PTC’s two hot stretch reducing mills (HSRM) also gives us a unique capability of producing D/t ratios that cannot be produced on an ERW mill. This enables PTC to supply a wide variety of diameter and wall thicknesses.
Special smooth I.D. surfaces are available for critical applications such as hydraulic cylinders and shock absorbers.
These products are typically produced to the requirements of ASTM A513 Type 5 (or Type 6 for SSID) or European standard EN 10305-2.
Common Applications Include:
- Axles
- Bushings
- Fluid power applications
- Gas Springs
- Hydraulic cylinders
- Motor housings
- Shock Absorbers
- Suspension components
- Transmission shafts
PTC Manufactures DOM to the following specs:
Specifications: ASTM A513 T5 & 6Size ranges
Imperial
0.366” OD x 0.028” wall
10.500” OD x 0.625” wall
Metric
9.300mm OD x .711mm wall
266.7mm OD x 15.875mm wall
Other sizes outside this range may be within our capability, please inquire to:
Round and shaped tubing available.
Standard Grades
1010
1020
1026
1030
1035
1526
4130
E355 (St 52.3)
PTC's DOM Capabilities
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