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U.PVC pipes and fittings are manufactured on technological lines of Krauss Maffei and Battenfeld-Cincinnati - Federal Republic of Germany.
| DN | Dmin | Zmin | Hmin | Dmin | Lmin | Z₁min | H₁min | |
| mm x mm | inch x inch | mm | mm | mm | mm | mm | mm | mm |
| 21 x 21 | 21 x 1/2 | 27 | 11 | 43 | 36 | 30 | 16 | 31 |
| 27 x 27 | 27 x 3/4 | 33 | 50 | 45 | 38 | 55 | 34 | |
| 34 x 34 | 34 x 1 | 40 | 17 | 59 | 54 | 46 | 22 | 44 |
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