Production DescriptionProduct NameSTB340 steel pipeSTB410 steel pipeSTB510 steel pipechemical analysisC:≤0.18; Si:≤0.35;Mn:0.30-0.60;P: ≤0.035; S:≤0.035C:≤0.32; Si:≤0.35;Mn:0.30-0.60;P: ≤0.035; S:≤0.035C:≤0.25; Si:≤0.35;Mn:1.00-1.50;P: ≤0.035; S:≤0.035Tensile Strength≥340Mpa≥410Mpa≥510MpaYield strength≥175Mpa≥255Mpa≥295Mpa
Advantage
(1) High quality JIS Standard G3461 STB30 carbon steel seamless pipewith reasonable price.
(2) Wide excellent experiences withafter-sale service.
(3) Every process will be checked by responsible QC whichinsuresevery product's quality.
(4) Professional packing teams whichkeep every packingsafely.Heat Treatment / Delivery Condition+CCold drawn / hard.After the last cold forming no heat treatment.+LCCold drawn / soft. After the last heat treatment follows the cold drawing there is a light finishing pass.+SRCold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.+AAnnealed. After the last cold drawing process the tubes are annealed in a controlled atmosphere.+NNormalized.After the last cold drawing process the tubes are annealed in a controlled atmosphere.