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API 5L and ASTM seamless steel pipe

Special Seamless steel pipe factory for ship ,project ,machine part and so on .Materials and standard is API 5L Gr.B /ASTM A106 Gr.B /ASTM A53 Gr.B/ GOST8732 CT20/GOST8731 CT20 /GOST8732 CT45 /STPG370/DIN 1629 ST44/ST52/S355/S235/S275/Q345



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至: Shandong zhongli steel pipe co.,ltd
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big thickness Mechanical seamless steel pipe for machine part
big thickness Mechanical seamless steel pipe for machine part Special Seamless steel pipe factory for ship ,project ,machine part and so on .Materials and standard is API 5L Gr.B /ASTM A106 Gr.B /ASTM A53 Gr.B...
ST44&ST52 seamless steel pipe
ST44&ST52 seamless steel pipe Special Seamless steel pipe factory for ship ,project ,machine part and so on .Materials and standard is API 5L Gr.B /ASTM A106 Gr.B /ASTM A53 Gr.B...
thick wall Mechanical seamless steel pipe for machine part
thick wall Mechanical seamless steel pipe for machine part Special Seamless steel pipe factory for ship ,project ,machine part and so on .Materials and standard is API 5L Gr.B /ASTM A106 Gr.B /ASTM A53 Gr.B...
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