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Threading is done on a threading machine having Lanco chaser which maintains uniformity on length of the threading on major and inner diameter and the pitch of the threads.
Inner and outer surface is pre-treated with special anti-rust phosphating chemical. Medium Protection Coating of the pipe, with black stove enamel paint is done by dipping process to ensure proper coating inside and outside of the pipe. The pipes are baked in an automatic oven for requisite hardening of paint and gloss finish of the pipe.
High Protection Coating of pipes i.e. Hot Dipped Galvanizing:- The zinc coating inside and outside is maintained in accordance with IS 4736/1986.
Raw tubes are tested in our lab before taking it to process. The finished pipes are tested for Dimensions, Bend Test, Screw Thread Test and compression Test before dispatch, thereby ensuring the best of the ultimate user.
| Nominal Size of Conduit (mm) | Outside Diameter (mm) | Tolerance on Diameter (mm) | Wall Thickness (mm) |
| 20 | 20 | +0.00, -0.30 | 1.4-1.8 |
| 25 | 25 | +0.00, -0.40 | 1.4-1.8 |
| 32 | 32 | +0.00, -0.40 | 1.4-1.8 |
| 40 | 40 | +0.00, -0.40 | 1.6-2.2 |
| 50 | 50 | +0.00, -0.50 | 1.6-2.2 |
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