A53 pipe is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines, Low pressure systems, Structural applications, Mechanical components, Bollards, Casing, generator plants, refineries, compressor stations, natural gas transmission, and steam .
ASTM is just a set of standards. ASTM steel pipe A53A corresponds to the Chinese standard GB8163 and the material is 10# steel. A53B corresponds to the Chinese standard GB8163 and the material is 20#. Both are primarily used for general purpose plumbing.
Chemical composition of steel pipe: Carbon C: 0.07~0.14" Silicon Si: 0.17~0.37 Manganese Mn: 0.35~0.65 Sulfur S: ≤0.04 Phosphorus P: ≤0.35 Chromium Cr ≤ 0.15 Nickel Ni: ≤ 0.25 Copper Cu: ≤ 0.25
Mechanical properties of steel pipe: tensile strength ob (MPa): >410 (42) yield strength os (MPa): > 245 (25) elongation ō5 (%): > 25 area reduction (%): 25, hardness: Not heat treated, S156HB,
Sample size: Sample 25mm Heat treatment specifications and metallographic structure: Heat treatment specifications: normalizing, 910°C, air cooling.
Metallographic structure: ferrite + pearlite.
Hot-rolled steel pipes are delivered in a hot-rolled or heat-treated state.
Hot-rolled seamless steel pipe production process: tube blank → heating → perforation → three-roll cross rolling, continuous rolling → detubing → sizing → cooling → straightening → hydraulic test → marking → storage lever effect seamless steel pipe, which will be detected.
Cold drawn seamless steel pipe production process: tube blank → heating → perforation → heading → annealing → pickling → oiling → multi-pass cold drawing → blank tube → heat treatment → straightening → hydraulic test → marking → warehousing.
