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API 5L Seamless Steel Yeeb Nkab Welded Steel Tubes
API 5L feem ntau yog hais txog kab yeeb nkab.
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ASTM A53 Welded thiab Seamless Steel Yeeb Nkab Hlau Tubes
ASTM A 53 npog seamless thiab welded steel yeeb nkab nrog nominal phab ntsa thickness.
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ASTM A106 Gr.B Seamless Steel Yeeb Nkab Hlau Tubes
ASTM A106 GR.B carbon seamless steel yeeb nkab yog ib hom carbon seamless kav nrog hollow seem.
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ASTM JIS BS EN Standard Seamless Steel Yeeb Nkab Hlau Tubes
Seamless steel yeeb nkab yog ua los ntawm perforated tag nrho puag ncig steel, thiab cov kav hlau tsis muaj vuam seam ntawm qhov chaw hu ua seamless steel kav.
