AISI4145, AISI4130, AISI1018 Material Forged Hollow Bar, Hollow Bar
Forging
Our annual forging capacity is 10,000 tons and we have more than
ten scientific and technical personnel. Our extensive raw material
inventory includes structural carbon steel, alloy structural steel,
carbon tool steel, alloy tool steel, stainless steel and
non-magnetic steel etc. We produce large and medium sized forgings
including 4145H mod drilling stabilizer forging, reamer forging,
and wellhead components forgings, etc.
Tiptop supplies a wide range of forged hollow bars, which has good
resistance and high strength and hardness. Forged hollow bar is
usually made from a solid round metal billet which is related and
pushed or pulled over a form until the material is shaped into a
hollow tube.
Steel ingot making
EAF+LF+VD/VAD or ESR
Manufacturing process
EAF + LF + VD+ Forging+ Normalizing & Tempering + Rough machining +
UT test + Quenching & Tempering + Precision machining
Report
Chemical composition report, Physical properties report, Heat
treatment report, Dimensional inspection report, NDT report
Nondestructive test (NDT)
UT ( ultrasonic testing ), MT ( magnetic particle testing ), PT
(penetrant testing)
| Equipment List | Model | Qty |
| Intermediate Frequency Heat Treatment Quenching Furnace | ZP-800KW | 1 |
| Medium Frequency Heat Treatment Tempering Furnace | ZP-400KW | 1 |
| Four Pillars Multiple Use Press Machine | Y43-500 Ton | 1 |
| Band Sawing Machine | GB4028 | 8 |
| Horizontal Lathe | CT61100 | 7 |
| Deep Hole Drilling and Boring Machine | TQ2132 | 2 |
| CNC Pipe Threading Lathe | STC34100bpipe | 3 |
| CNC Pipe Threading Machine | S1-262A | 3 |
| Gantry Type Milling Machine | XG2080T*5m | 1 |
| CNC Gantry Milling Machine | XG2310×65 | 1 |
