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標準:GB/T12606-1999級別:4級d.電磁超聲波探傷:不需要耦合介質,可以應用于高溫高速,粗燥的鋼管表面探傷。e.滲透探傷:熒光、著色、檢測鋼管表面缺陷。4.鋼管理化性能檢驗:①拉伸試驗:測應力和變形,判定材料的強度(YS、TS)和塑性指標(A、Z)縱向,橫向試樣管段、弧型、圓形試樣(¢10、¢12.5)小口徑、薄壁大口徑、厚壁定標距。備注:試樣斷后伸長率與試樣尺寸有關GB/T1760②沖擊試驗:CVN、缺口C型、V型、功J值J/cm2標準試樣10×10×55(mm)非標試樣5×10×55(mm)③硬度試驗:布氏硬度HB、洛氏硬度HRC、維氏硬度HV等。
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