Ngongo maitai tui
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Ngongo Miihini Tuia Matao
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ASTM A335 He paipa mo te kawe paipa kohu
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L245 pipeline maitai Kaihanga maitai ngaio
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L360 paipa maitai tukatuka ritenga paipa kawe putorino
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L485 paipa maitai mo te ahumahi hinu
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a106 gr c paipa maitai korekore
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kowiri tira ngongo tapawha tuitui
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Wao ngongo maitai kore hinu me te hau ERW ngongo waro maitai
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Hot Rolled Seamless Steel Tube