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st 52 3 seamless steel tube

st 52 3 seamless steel tube, St52 Steel Tube suppliers| St52 St52.3 St52.4 Seamless What is St52, St52.3, St52.4 Seamless Pipe? American steel grade German steel St52. The “St” means a general structural carbon steel (that is, plain carbon rather than low alloy) which is not intended to be heat treated (that is, other than the heat treatment which naturally occurs during cooldown from the hotrolling operation). The “52” means a minimum tensile strength of 52 kg per

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