The product carries out the standard to include: GB/T8162-1999, GB/T8163-1999, GB/T3087-1999, GBT5310-1995, GB6479-86, GB9948-88 and so on. the material quality is: T91, A335P22, P11, P5, ASTM106B, 10CrMo910, Cr5Mo, Cr9Mo, 12Cr1MoV, 15CrMo, 35CrMo, 20G, 45#, 16Mn, 27iMn, and so on.
