Cold Rolled Welded Steel Tubes
Item specifics
- OD range:
- 10-150 mm
- WT range:
- 0.3-5 mm
- Delivery condition:
- Cold Rolled only
- Surface condition:
- Bright
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Description
1. Applications:
Agricultural oil cylinder (<200bar), more fuel-efficient cylinder, stabilizer, load cylinder, steering system.
2. Quality Standards:
EN10305-3 Welded cold size tubes
DIN 2393 Welded Precision Steel Tubes
ASTM A513 Standard Specification for Electric Resistance Welded Carbon and Alloy Steel Mechanical Tubing
3. Steel Grades:
GB Standard: 08, 08F, 08Al, 10#, 20#, Q195, Q235
JIS Standard: SPCC, SPHC
EN Standard: E195, E235, E275, E355
DIN Standard: St12, St37, ST52.3
ASTM Standard: 1010, 1020, 4130
4. Tolerance of Dimensions:
Inner Diameter：H9, H10
Inner surface roughness: Ra 0.80u max
Eccentricity: 3% max
5. Process:
The cold rolled welded tube is produced by rolling ERW (electric resistance welded tube) through a die and over a mandrel plug. During this process the sizing (wall thickness, inside and outside diameter), as well as weld integrity and surface finish is closely controlled to produce tube of the required size and mechanical property characteristics.
