DIN 2391 St52 Seamless Precision Steel Tubes, DIN 2391, DIN 2391-2, DIN 2391 Part II, DIN2391-2 St45, EN 10305-1 E235, EN 10305-4, NF 699, Hydralic Precision Cylinder Ready to Hone Tubes, High
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DIN 2391 Cold drawn seamless steel tube,ST-52 Seamless Precision pipe