TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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ASTM A519 JIS G3475 1045 BKS Cold Rolled Hydraulic Cylinder Honing Honed Tube
JIS G 3473 is the production standard Torich follow to manufacture Hydraulic Cylinder Carbon Steel Tubes for Cylinder Barrels
JIS G 3473 Carbon Steel Tubes for Cylinder Barrels
Standard:
JIS G 3473
Size:
ID 5-420mm WT0.5-50mm L max 12000mm
Grade:
STC 370,STC 440, STC 510 A ,STC 510 B, STC 540 ,STC 590 A ,STC 590B
Chemical composition and Mechanical properties of JIS G3473:
| Steel Grade | C max | Si max | Mn max | P max | S max |
| STC 370 | 0.25 | 0.35 | 0.3-0.90 | 0.04 | 0.04 |
| STC 440 | 0.25 | 0.35 | 0.30-0.90 | 0.04 | 0.04 |
| STC 510 A | 0.25 | 0.35 | 0.30-0.90 | 0.04 | 0.04 |
| STC 510 B | 0.18 | 0.55 | 1.5 | 0.04 | 0.04 |
| STC 540 | 0.25 | 0.55 | 1.6 | 0.04 | 0.04 |
| STC 590 A | 0.25 | 0.35 | 0.30-0.90 | 0.04 | 0.04 |
| STC 590 B | 0.25 | 0.35 | 1.5 | 0.04 | 0.04 |
| MECHANICAL PROPERTIES min | |||
| Steel grade | Tensile strength Mpa | Yeild point or proof stress Mpa | Elongation % |
| STC 370 | 370 | 251 | 30 |
| STC 440 | 440 | 305 | 10 |
| STC 510 A | 510 | 380 | 10 |
| STC 510 B | 510 | 380 | 15 |
| STC 540 | 540 | 390 | 20 |
| STC 590 A | 590 | 490 | 10 |
| STC 590 B | 590 | 490 | 15 |
a: Rm: tensile strength; ReH: upper yield strength; A: elongation after fracture
b: 1Mpa=1N/mm2
c: Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strength.
d: For calculation purposes the following relations are recommended:
for delivery condition +C: ReH ≥0.8 Rm
for delivery condition +LC: ReH ≥0.7 Rm
For calclulation purposes the following relation is recommended:ReH≥0.5Rm
e: For tubes with outside diameter ≤30mm and wall thickness ≤3mm the ReH minimum values are 10Mpa lower than the values given in this Table
f: For tubes with outside diameter＞160mm: ReH≥420Mpa
Note: Special steel grade is also available, according to customer request.
A: We are factory.
A: It is according to quantity. And usually is 35-50 days after receiving 30% T/T in advance.
A:
1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.
A:
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight