Engineered for both internal mandrel and external die lubrication, forming a tough film that resists tearing and volatilizes completely clean through annealing.
The fabrication of seamless copper tubes for HVAC, plumbing, and industrial heat exchangers requires highly specialised metal-forming lubricants. During the tube-drawing process, hollow copper blanks are pulled through dies while an internal plug or mandrel maintains the inner diameter, creating extreme mechanical pressure and frictional heat on both the interior and exterior tube walls.
Prymol's dedicated tube drawing compound is engineered to withstand these intense forces, preventing metal tearing while ensuring completely clean, carbon-free surfaces after annealing.
Built for the dual-surface demands of tube drawing — protecting the mandrel on the inside and the die on the outside, in a single heavy-duty compound.
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This high-viscosity, heavy-duty neat drawing oil is precisely engineered for both internal mandrel lubrication and external die lubrication during the copper tube drawing process. Formulated with highly refined, high-molecular-weight polymer bases and specialised synthetic oiliness additives, HD 50 forms a tough, continuous lubrication film that prevents metal-on-metal contact. Crucially, it is chemically formulated to be clean-burning — the residual oil volatilizes completely during the annealing furnace cycle without leaving behind harmful carbonaceous residues, deposits, or inner-wall staining.
Every drawing pass puts extreme mechanical pressure and frictional heat on both the interior and exterior walls of the tube. HD 50 is formulated to protect both surfaces simultaneously, in a single fluid.
| Surface | Function | Key Strength |
|---|---|---|
| Internal (Mandrel) | Maintains inner diameter during the draw | Prevents wall tearing & fracture |
| External (Die) | Reduces friction against the forming die | Protects die & mandrel life |
Not sure which grade?
We can help.Prevents tube chattering, surface tearing, and wall fracturing under heavy mechanical reduction passes.
Volatilizes cleanly during the annealing cycle, keeping tube walls bright and free of carbon deposits, meeting strict refrigeration standards.
Significantly reduces abrasive wear on expensive drawing mandrels and external forming dies.
Leaves a temporary protective barrier that shields raw copper tubes from atmospheric oxidation and humidity during warehouse storage.
From 20-litre buckets for on-site top-ups to full 210-litre drums for centralised drawing lines — HD 50 is available across all industrial pack sizes.
Available in the neat HD 50 formulation across all pack sizes. Bulk pricing available on request.
Ensure your copper tubes meet the high purity and structural integrity standards required by the global refrigeration and piping industries. Reach out to our industrial commercial sales office to receive detailed technical advice, bulk contract rates, and shipping schedules.