. Material: Alloy Steel & High Manganese Steel

2.processing:(all the processing we can supply ,not meant that it's on one product)

                    forging 

                rough machining

                    normalizing

                    tempering

                    heat treatment

                    finish machining

                    drilling and boring hole

3. Standard: API & ISO

4. Hole size: 6” to 26”

5. Test: 100% UT & MT tested

6. Steel grade: AISI 4145H or non-magnetic