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ASTM A53
na admin ma ka 21-01-27
ʻO ka ASTM A53 Standard ka maʻamau maʻamau no ka paipu kalapona kalapona, ʻaʻohe mea no nā paipu kalapona ʻole a me nā paipu a i ʻole nā paipu wteel welded, nā paipu ʻole a me nā paipu zinc coated.ʻEleʻele a me ka wela wela...
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API 5L/ASTM A53 GR.B, paipu hao hao SSAW
na admin ma ka 21-01-26

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API 5L GR.B/ASTM A53 GR.B, LSAW Paipu kila kalapona
na admin ma ka 21-01-26

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API 5L/ASTM A53 GR.B, ERW Paipu kila kalapona
na admin ma ka 21-01-26

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API 5L/ASTM A106 GR.B, Paipu kila kabone maʻemaʻe
na admin ma ka 21-01-26

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ʻAila paipu wela hoʻomaʻamaʻa umu
na ke kahu ma ka 21-01-21
Me ka paʻakikī o ka hoʻonui ʻana i ka aila, ua piʻi nui ka hohonu o ka hohonu hohonu no nā paipu aila, ua hiki ʻole ke hoʻokō ʻia ka pahu aila kila J55 i nā koi, ua lilo ka pae kila N80 i mea maʻamau, P110, Q125 a me nā pae kila ʻē aʻe. hoʻohana...
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