Awọn ibeere imọ-ẹrọ pipe ERW Awọn ibeere imọ-ẹrọ Fun epo ati gbigbe gaasi Fun gbigbe omi titẹ kekere Ohun elo Gr.b Gr.b Pipe ara diamita D<508mm, ± 0.75%; D≥508mm, ± 0.75% D≤168.3, ± 1.0%; 168.3<D≤508,±0.75%; Iwọn odi D 508mm, + 15.0%, - 12.5%; D≥508mm, + 17.5%, -10% ...
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