Iimveliso
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I-ASTM A106 GR.B yentsimbi yentsimbi yamanzi
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I-API 5l yentsimbi yentsimbi yegesi yeoyile
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I-API 5L ASTM A106 A333 okanye i-A335 ye-carbon yentsimbi
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I-API 5ct, j55, k55, l80, i-N80 yentsimbi kunye netyhubhu
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I-API 5ct ye-carbon yentsimbi yentsimbi yeeprojekthi ze-drill
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I-ATTM A333, i-ASTM A335, i-ASTM A387, i-ASTM A213 / 213M Allo Allow
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I-ASTM A192, i-ASTM A179, i-ASTM A209, i-ASTM A210 i-tuber yentsimbi
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Ukuchasana nombane kwi-Erw Erw pipes Erw Tubes
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I-SAN 657-3, En 10305, Din 2391 I-pipes yentsimbi / iityhubhu zentsimbi