86-731-89903933
Room 1003, Building 22, Zhongcheng Lijinxiangshan District, No. 239, Part II, Wanjiali Middle Road, Yuhua Area, Changsha, Hunan, China (Mainland)
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| RSt 37.2 | 0.17 max | 0.30 max | 0.70 max | 0.025 max | 0.025 max |
| Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Yield Strength R2 (Mpa) | Elongation in the longitudinal direction Al (%) |
|---|---|---|---|---|
| RSt 37-2 | +C | 390 min | / | 7 min |
| RSt 37-2 | +A | 315 min | / | 25 min |
| RSt 37-2 | +N | 340-470 | 235 min | 25 min |
Sizes Range
OD:18mm-230mm, WT:1.5mm-15mm
Tolerance of Dimensions
Inner Diameter: H9 H10
Inner Surface Roughness: Ra 0.80μ max
Eccentricity: 3% max
Delivery Conditions:
+C Hard. No final treatment after final cold drawing.
+LC Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area).
+SR Stress Relieved. After final cold drawing, the tubes are stress relieved in a controlled atmosphere.
+A Annealed. After final cold drawing, the tubes are annealed in a controlled atmosphere.
+N Normalized. After final cold drawing, the tubes are normalized in a controlled atmosphere.
Process:
The cold drawn welded tube is produced by drawing 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.
Tube Finishing Options:
Our tubes can be additionally treated to achieve the exact finishes and ends needed by customers. These are some of the additional operations that can be performed on our tube:Drawing, Heat treatment, Bulging, Swaging, Cutting, Deburring, Vibro cleaning, Threading,De-rusting, Chamfering, Washing.
Surface treatment: Oiled, black painted, hot dipped galvanized or phosphate coating as required.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Standard AND Optional Testing:
Visual and dimensional test 100%.
Eddy current test 100% acc. to EN 10246-3.
Ultrasonic test 100% acc. to EN 10246-7.
Chemical composition.
Impact test.
Mill Test Certificate:
The product is supplied with 3.1.B inspection certificate,according to the standards EN 10204 and ISO 10474.
Our Services:
Third Party inspection acceptable. such as SGS, BV etc.
Supplying financial support with usance L/C 180 days after B/L date.
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