Views: 522 Author: Site Editor Publish Time: 2020-03-01 Origin: Site
Hydraulic cylinder tube also named honed tube or cold-drawn honed seamless cylinder tube, it is one of main steel materials for making hydraulic cylinders, honed tubes are to made from seamless steel tube through cold-drawn, relieving and honing processes.
Most important processing is honing processing, that’s why named honed tube or honing tubing.
And the products before honing processing named pre-honed tube or ready to honed tube.
During honing processing, ID surface of pre-honed tube is go through grinding several hours become smooth and shiny, final honed tube with high precision and very low roughness and could making hydraulic cylinder barrel directly without further ID processing.
Cold-drawn honed seamless cylinder tube production processing:
Raw Materia - Acid cleaning - Parkerizing - Cold-drawn - stress relieving - leveling - Saw off reject parts - Honing - Anti oil coating - Packing.
Steel Graded: ST52, STKM13C, SUS316
Length: 6-8m.
Size: ID range from 25 to 250mm
Straightness:0.5 /1000mm
ID Tolerance: ISO H8
OD Tolerance: +/-0.3mm
Quality standard:
DIN2391 Cold drawn precision seamless steel tubes
EN10305 Precision steel pipe, cold drawn seamless tubes
ASTM A519 Standard specification for seamless carbon steel and alloy steel tubes for mechanical use
JIS G3445 Carbon steel tubes for mechanical structures
Physical properties of cold-drawn seamless honed tube
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 |
Tensile strength Min | Yield Point Min | Elongation % Min |
580 N/mm2 | 420 N/mm2 | 10 |
Inquiry and get price immediatly.
sales@dhonedtube.com
