TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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Precision Seamless Steel Tube AISI 4130 Alloy Steel Cold Rolled Steel Tubes
Torich can produce precision seamless steel tubes for Mechanical purpose .Over 20 years' experiences
on it win a lots of customer from over sea.
Standard of 4130 precision seamless steel tubes: DIN 2391 EN 10305-1/4 ASTM A519
OD:4-76mm
Wall thickness:0.5-8mm
Material:4130 30CrMo E215 E235 E355 ST35,ST37.4,ST45,ST52.4 etc
Chemical Composition
| Grade | C % | Si % | Mn % | P % | S % | Mo % | Cr % |
| 1020 | 0.18-0.23 | / | 0.30-0.60 | 0.040 max | 0.050 max | / | / |
| 1025 | 0.22-0.28 | / | 0.30-0.60 | 0.040 max | 0.050 max | / | / |
| 1035 | 0.32-0.38 | / | 0.60-0.90 | 0.040 max | 0.050 max | / | / |
| 1045 | 0.43-0.50 | / | 0.60-0.90 | 0.040 max | 0.050 max | / | / |
| 4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | 0.040 max | 0.040 max | 0.15-0.25 | 0.80-1.10 |
| 4140 | 0.38-0.43 | 0.10-0.35 | 0.75-1.00 | 0.040 max | 0.040 max | 0.15-0.25 | 0.80-1.10 |
| E215 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | Al 0.025 min | |
| E235 | 0.17 | 0.35 | 1.2 | 0.025 | 0.025 | ||
| E355 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 | ||
| ST35 | 0.17 | 0.35 | 0.40min | 0.025 | 0.025 | ||
| ST37.4 | 0.17 | 0.35 | 1.2 | 0.025 | 0.025 | ||
| ST45 | 0.21 | 0.35 | 0.40min | 0.025 | 0.025 | ||
| ST52 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 |
| Seamless Precision steel pipe orHydraulic steel tube | |||||
| Standard | Material | Delivery | Surface | Sizes | |
| DIN | 2391/1630/2445 | ST37.4 ST52.4 | NBK | 1) BA 2)Black phosphating 3) Galvanizing | OD2 -60mm × WT0.3 -10mm |
| EN | 10305-4 | E235 E355 | (+)N | ||
| BS | 3602 | CFS 360 | Zinc Layer thickness more than 8um | ||
| Other steel grades also available upon request | |||||
Delivery condition of 4130 Precision Seamless Steel Tube :
The tubes can be produced in the following delivery conditions:
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after the last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked)
After the last heat treatment there is a light finishing pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are stress relieve annealed.
GBK (+A) Annealed.
After the final cold forming process the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. (Mainly focus on)
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere
Main uses of 4130 Alloy Steel Mechanical tubes: high precision steel pipe for hydraulic systems,
steel pipes for automobiles, and other customers who have high requirements for steel pipe accuracy,
smoothness, cleanliness, and mechanical properties.
What is advantage of TORICH?
A. Prompt reply within 24 hours
B. Nice English Speaker
C. Nice Quality with reasonable price
D. 30 min away from Shanghai by train
E. Producing and Trading for Steel Tubes, souring the right products for right customers.
F. With us your money in e your business in e!
G. TORICH quality will give you an adege over your competitors!
H. We look for long term and stable Win-Win Business.
