Точность трубки

Seamlessprecision tube (1) O.D.:8-32mm (2) Standard: EN1035/ASTM A513/DIN2394. ERW steeltube Used the high precision welded line bench to product tubes, with complete checking equipments. Consistent with ASTM S513/EN10305, used quality raw materials and reasonable production process. Advantages:high precision size, high consistency, excellent mechanical properties. Widely used in follow industries: furniture, mechanical structure, bicycle, fitness equipment and so on. Chemical composition(%) of welded tube's common grades Standard Grade Chemical Composition(%) C Si Mn S P Cr GB700 Q/BQB402-2003 Q195 0.06-0.12 ≤0.3 0.25-0.50 ≤0.050 ≤0.045 Q215 0.09-0.15 ≤0.3 0.25-0.55 ≤0.050 ≤0.045 Q235A 0.14-0.22 ≤0.3 0.35-0.65 ≤0.050 ≤0.045 SPCC ≤0.12 ≤0.05 ≤0.05 ≤0.025 ≤0.035 Conventional mechanical properties of welded tube Standard Grade Soft conditions Low-hand conditions Tensile strength(MPa) Make percentage elongation 5(%) Tensile strength (MPa) Make percentage elongation (%) GB/T13793- 1992 Q/BQB402- 2003 Q195 ≥315 ≥22 ≥335 ≥14 Q215 ≥335 ≥22 ≥355 ≥13 Q235A ≥375 ≥20 ≥390 ≥9 SPCC ≥270 ≥36