JIS G3445 Grade STKM 13C Carbon Steel Seamless Tubes are known as nild steel tubes, STKM 13C Seamless Tubes are low-cost low carbon steel tubes with 0.25% max content,they are very easy to form an shape. these tubes are manufactured as per JIS specfication and commercially referred as MS pipes.
STKM 13C Carbon Steel Seamless Tube Chemical components and Mechanical properties inspection
| Standard | Grade | Chemical Components (%) | Mechanical properties （Bright Annealing) | |||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | ||
| JIS G3445 | STKM 13C | 0.2 | 0.21 | 0.38 | 0.011 | 0.003 | 0.07 | 0.01 | 0.03 | 635 | 565 | 16 |
Appearance
- The STKM 13C honed tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube
- The tubes shall be free from defects detrimental to practical use.
- The surface finish of the tubes, when especially specified, shall be agreed upon by the purchaser and the manufacturer.
- JIS G3445 STKM 13C carbon steel tubes used for machinery, hydraulic cylinders, automobiles, bicycles, furniture, appliances, and other machine parts.