Exclude rows surpassing threshold value

I have a dataset df

  field_pointpath                       assetclass_code value
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT      6KSFS_6KSF   50
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT      6KSFS_6KSF   60
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT      6KSFS_6KSF   65
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT      6KSFS_6KSF   43
C_THDxL_0154x6KSFS_A03xaP_ACT                  6KSFS    70
C_THDxL_0154x6KSFS_A03xaP_ACT                  6KSFS    55
C_THDxL_0154x6KSFS_A03xaP_ACT                  6KSFS    43
C_THDxL_0154x6KSFS_A03xaP_ACT                  6KSFS    11
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT     6KSFS_6KSF    67
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT     6KSFS_6KSF    36
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT     6KSFS_6KSF    39
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT     6KSFS_6KSF    33
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT     6KSFS_6KSF    20
C_THDxL_0154x6KSFS_B03xaP_ACT                  6KSFS    21
C_THDxL_0154x6KSFS_B03xaP_ACT                  6KSFS    22
C_THDxL_0154x6KSFS_B03xaP_ACT                  6KSFS    17
C_THDxL_0154x6KSFS_B03xaP_ACT                  6KSFS    30

I want to filter out values for specific field_pointpath for example:

• C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT

• C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT

  which has a character A should not have value greater than 60:

Similarly,

• C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT,

• C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT

  which has a character B should not have value greater than 30

Thus output should be

                    field_pointpath    assetclass_code  value
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT   6KSFS_6KSF       50
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT   6KSFS_6KSF       60
C_THDxL_0154x6KSFS_A03x6KSF_11xaP_ACT   6KSFS_6KSF       43
C_THDxL_0154x6KSFS_A03xaP_ACT              6KSFS         55
C_THDxL_0154x6KSFS_A03xaP_ACT              6KSFS         43
C_THDxL_0154x6KSFS_A03xaP_ACT              6KSFS         11
C_THDxL_0154x6KSFS_B03x6KSF_11xaP_ACT   6KSFS_6KSF       20
C_THDxL_0154x6KSFS_B03xaP_ACT              6KSFS         21
C_THDxL_0154x6KSFS_B03xaP_ACT              6KSFS         22
C_THDxL_0154x6KSFS_B03xaP_ACT              6KSFS         17
C_THDxL_0154x6KSFS_B03xaP_ACT              6KSFS         30