AISI 4130 4140 4145 4330V Alloy Steel hollow bar
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.
New Force 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)
PRODUCT DESCRIPTION
Forged/cold drawn alloy steel round bar
Hot rolled carbon steel round bar
- Diameter: 8mm-250mm rounds, 5mm-9mm rods
- Length: 2m, 3m, 5.8m, 6m or customized
- Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN
- Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -
hot rolled or forged to get the steel round bar and plate
- Heat Treatment: annealing, normalizing, tempering, quenching
- Surface Treatment: Black, Polished, Galvanized
- Quality Assurance: We accept third party inspection for all orders.
You can ask testing organizations such as SGS, BV, etc. to test our
products before shipping.
Chemical Composition
| Grade | Dia.(mm) | C | Si | Mn | Cr | P | S | Ni | Cu | Mo |
| 5120 | 16-85 | 0.18-0.24 | 0.17-0.37 | 0.50-0.80 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | |
| 5140 | 16-400 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.03 | |
| 4135 | 13-230 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
| 4140 | 13-360 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25
|
| 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 |
Application:
Construction field, ships building industry, car making industry,
petroleum & chemical industries, war and electricity industries,
food processing and medical industry, boiler heat exchange,
machinery and hardware fields.
