起源の場所:
Zhijiang/China
ブランド名:
TORICH
証明:
ISO9001 ISO 14001 TS16949
モデル番号:
シームレスなコールドドロー、精密鋼管
These seamless cold drawn precision steel tubes are manufactured from alloy steels including AISI 1045, 4130, 4140, and additional grades such as 4340 and 8620. They are characterized by excellent dimensional accuracy, smooth surface finish, and superior mechanical strength, making them ideal for high-performance engineering applications.
Process: Seamless, cold drawn
Material Grades: 1045, 4130, 4140, 4340, 8620
Shape: Round, customized on request
Tolerances: According to EN, ASTM, and GB standards
Condition: Annealed, normalized, quenched & tempered, or customized
| Grade | C | Mn | Si | Cr | Mo | Ni | Others |
|---|---|---|---|---|---|---|---|
| 1045 | 0.43–0.50 | 0.60–0.90 | 0.15–0.35 | – | – | – | – |
| 4130 | 0.28–0.33 | 0.40–0.60 | 0.15–0.35 | 0.80–1.10 | 0.15–0.25 | – | – |
| 4140 | 0.38–0.43 | 0.75–1.00 | 0.15–0.35 | 0.80–1.10 | 0.15–0.25 | – | – |
| 4340 | 0.38–0.43 | 0.60–0.80 | 0.15–0.35 | 0.70–0.90 | 0.20–0.30 | 1.65–2.00 | – |
| 8620 | 0.18–0.23 | 0.70–0.90 | 0.15–0.35 | 0.40–0.60 | 0.15–0.25 | 0.40–0.70 | – |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| 1045 | 570–700 | 310–350 | 16–20 | 170–210 |
| 4130 | 560–670 | 460–560 | 20–25 | 160–200 |
| 4140 | 655–950 | 415–655 | 12–18 | 197–255 |
| 4340 | 745–1080 | 470–850 | 10–15 | 200–280 |
| 8620 | 620–850 | 415–550 | 20–30 | 160–210 |
High dimensional accuracy and smooth internal/external surfaces
Excellent toughness and fatigue resistance
High strength-to-weight ratio
Good machinability and weldability (grade dependent)
Suitable for heat treatment (quenching & tempering, carburizing, etc.)
ASTM A519 – Seamless carbon and alloy steel mechanical tubing
EN 10305-1 – Steel tubes for precision applications, seamless cold drawn tubes
JIS G4051 / G4105 – Alloy steel tubes for machine structural use
GB/T 3639 – Seamless cold drawn or cold rolled precision steel tubes
GOST 8734 – Seamless precision steel tubes
Seamless cold drawn alloy precision tubes are widely used in high-demand engineering fields:
Automotive: Drive shafts, steering components, suspension parts
Aerospace: Landing gear, structural tubing, hydraulic systems
Oil & Gas: High-pressure lines, tool joints, downhole components
Machinery: Gears, shafts, crankshafts, heavy-duty spindles
Hydraulic Systems: Cylinder tubes, precision mechanical equipment
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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