Bututu Karfe mara sumul
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ASTM A335 P91 Type 2 tubes / P5 / P9 / P11 / P12 / P22
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A213 T22 Alloy Karfe Tubes / Bututu
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Bututun Karfe don Sarrafa Wurin Ruwa
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Mai Rijiyar Casing Karfe bututu API 5CT L80 BTC R3
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API 5CT N80 R3 Casing Karfe Bututu don Rijiyar Mai
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ASTM A106 GR.B Bututun Karfe mara kyau don ruwa
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API 5L Bututun Karfe mara sumul don iskar mai
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API 5L ASTM A106 A333 ko A335 Carbon Karfe Bututu
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API 5CT, J55, K55, L80, N80 Karfe Casing & tubing