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Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2018-05-24 06:20
210
Company Profile
By certification [File Integrity]
Contact: sdlongyue(Mr.)
Email: 
Telephone: 
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Area: Beijing
address: #2878, Haidai BeiLu, Economic Development Zones, Qingzhou City, Shandon Province
Website: http://www.lyhonedtube.com/ http://sdlongyue.zwlwnet.com/
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Professional manufacturer of honed tube, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China.
Hydraulic honed tube
Description
Longyue's hydraulic honed tube is produced using our "Suitable To Hone" Drawn Over Mandrel (DOM) and Cold Drawn Seamless (CDS).
The honing process involves using abrasive polishing stones and abrasive paper to remove small amounts of material, to produce extremely precise ID dimensions and improved finishes.
Honed tube is ready to use for hydraulic cylinder applications without further ID processing.
Quality Standards
→DIN 2391 Seamless Precison Steel Tubes
→EN10305 Steel Tubes for Precision Applications Seamless Cold Drawn Tubes
→ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
→JIS G3445 Carbon Steel Tubes for Machine Structural Purposes
Steel Grades
ST52 ST45 E355 1020 1026
Chemical Composition(%)
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
St 45 (DIN1.0408) |
0.21 max |
0.35 max |
0.40 min |
0.025 max |
0.025 max |
/ |
/ |
St 52 (DIN1.0580) |
0.22 max |
0.55 max |
1.60 max |
0.025 max |
0.025 max |
/ |
/ |
E355 |
0.22 max |
0.55 max |
1.60 max |
0.025 max |
0.025 max |
/ |
/ |
1020 |
0.18-0.25 |
/ |
0.30-0.60 |
0.040 max |
0.050 max |
/ |
/ |
1026 |
0.22-0.28 |
/ |
0.60-0.90 |
0.040 max |
0.050 max |
/ |
/ |
Mechanical Properties( T=20°C if not differently stated ):
Grades |
Delivery Conditions |
Tensile Strength Rm (Mpa) |
Elongation in the longitudinal direction Al (%) |
St 45 |
+A (GBK) |
390 min |
21 min |
St 52 |
+A (GBK) |
490 min |
22 min |
E355 |
+A (GBK) |
450 min |
22 min |
1020 |
+A (GBK) |
390 min |
21 min |
Product Processing
Raw materials- Cold drawn/rolled- Heat treatment (BKS)- Honed - packing.
Product Processing
Processing Way |
Cylinder Barrel ID (mm) |
Max Length (mtr) |
Straightness (mm/mtr) |
ID Tolerance |
Wall Thickness Tolerance (mm) |
ID Roughness (μm) |
Cold Drawn |
40-320 |
12 |
0.2-0.5 |
H8-H10 |
±5% |
0.8-1.6 |
Cold Rolled |
12-100 |
12 |
0.2-0.5 |
H8-H10 |
±5% |
0.8-1.2 |
Cold Drawn+Honed |
40-500 |
8 |
0.2-0.3 |
H7-H9 |
±5% |
0.2-0.8 |
Cold Drawn-SRB |
40-400 |
7 |
0.2-0.3 |
H8-H9 |
± 5% |
0.2-0.4 |
Deepth Drilling-Honed |
320-1100 |
8 |
0.2-0.3 |
H7-H9 |
±8% |
0.2-0.8 |
Deepth Drilling-SRB |
320-600 |
7 |
0.2-0.3 |
H8-H9 |
±8% |
0.2-0.4 |
Applications
•Hydraulic cylinders for a variety of heavy equipment industries
Package
All products are shipped considering method of cartage in appropriate packaging to protect from damage. Special overseas packaging is available.
Honed ID Tubing are packaged with either steel sheet caps banded to each end, welded steel plates, or wood crates to protect the Honed ID.
http://www.lyhonedtube.com/
