Chiness Cold Drawn Seamless Stainless Steel Tube Manufacturer
1) Production description:
Cold drawn tube is well known as hydraulic cylinder tube in many industries. This is because pre honed tube are the most important materials of manufacturing hydraulic cylinders. And as this kind of tubing is usually honed in tube inside diameter, it is known as honed ID tubing also.
Steel honed tubing is made of seamless cold drawn steel pipes, the cold drawn tubes can be produced according to most popular international standards such as DIN 2391, EN 10216-2, ASTM A513-5, A 519, GB/T 3639 etc. on customer's request.
CDS tube sizes can be same as honed tube, then we can control the tolerance as your requirement.
Cold drawn steel tube processing:
Raw Materia l→ Acid cleaning → Parkerizing →Cold-drawn →stress relieving→ leveling→ saw off not good parts→ inspection→ packing
2) Production Details
Chemical composition(%)
Grade | C | Si | Mn | P | S | Cr | Mo | |
St 45 (DIN1.0408) | 0.21max | 0.35max | 0.40min | 0.025max | 0.025max | / | / | |
St 52 (DIN1.0580) | 0.22max | 0.55max | 1.60max | 0.025max | 0.025max | / | / | |
E355 | 0.22max | 0.55max | 1.60max | 0.025max | 0.025max | / | / | |
1020 | 0.21max | / | 0.30-0.60 | 0.040max | 0.050max | / | / | |
1026 | 0.21max | / | 0.60-0.90 | 0.040max | 0.050max | / | / | |
Mechanical Properties( T=20°C if not differently stated )
Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Elongation in the longitudinal direction Al (%) |
ST45 | +A (GBK) | 390 min | 21 min |
ST52 | +A (GBK) | 490 min | 22 min |
E355 | +A (GBK) | 450 min | 22 min |
1020 | +A (GBK) | 390 min | 21 in |
3) Production process and details
Article Name | Cylinder ID mm | Length m | Straightness mm/m | Tolerance on ID | Tolerance on WT | Roughness |
Cold Drawn tube | 40-320 | ≤12m | 0.2-0.5 | / | ±5% | 0.8-1.6 |
Cold rolling tube | 30-100 | ≥12m |
| / | ±5% | 0.8-1.2 |
Cold drawn-honed tube | 40-500 | 8m | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
Cold drawn-roll tube | 40-400 | 7m | 0.2-0.3 | H8-H9 | ±5% | ≤0.4m |
Deep-hole tube | 320-400 | 8m | 0.2-0.3 | H7-H9 | ±8% | ≤0.8 |
4) Packing and Delivery
5) Our company and Advantages .
As the biggest cds tube suppliers, we were established under modern management system and technologies in 2003. It covers an area of 40,000 sq. meters, plant cover 25,000 sq. meters and building area of 30,000 sq. meters. All processing control include cold-drawn, heat treatment, honing, peeling, grinding, polishing. There are 60sets of advanced equipment and 70+ skilled technical workers, annual output over 20,000tons.
Why Choice Us
1.Professional, rich experience, reliable in pre honed tube, cds steel tube, honed tube and chrome rod, hydrulic pipe.
2.One-stop collection for honed tube, chrome rod, casting cylinder components.
3.Full range of size and material, ready stock goods with fast delivery
4.Customizable, non-standard sizes available
5.Small quantity acceptable
6.Refund or replace if any quality issue.
6) Contact us
Carter
Whats app: +8615762491265
Email: carter@dhonedtube.com