Honed Tubing

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 tubing is ready to use for hydraulic cylinder applications without further ID processing.

Honed tube is well known as hydraulic cylinder tube in many industries. This is because honed tubes 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.

The honed tubes suitable for various kinds of Precision Mechanical Tube, Honed Cylinder Tubing and Hydraulic Cylinder, Construct use Multi Joint Tube, Steel Axis Pipe, Injection Machine and Robotic Arm.
Honed Tube For Hydraulic Cylinder
Quality Standards
Seamless Honed Tubes (Steel) with a micro-finish and highly accurate in bore size within tolerance H7 or equivalent.

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
Grade: ST 52, ST52.3, CK45, E355, 16Mn, STKM13C, SAE1020, SAE1026, SAE1045

Size range:

Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.
Inside diameter from 40 to 1000mm, Max length 20 meters.
Straightness: 0.5 /1000
Tolerance EXT: DIN 2391
Tolerance INT: ISO H8
Roughness(Ra): 0.2 to 0.4µ
cold drawing
normalizing treatment

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.
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


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