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{"title":"E255 EN10305-2 WT0.5 High Strength Welded Steel Tube for Precision Cold Drawn","imgUrl":"https:\/\/img.chinax.com\/nimg\/67\/4e\/18dbdf97c6c6786c7154f1023a8b-200x200-1\/e255_en10305_2_wt0_5_high_strength_welded_steel_tube_for_precision_cold_drawn_automotive_applications.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBRWT-1","Place of Origin":"Jiangsu, China","Certification":"TS16949, DNV, PED, ISO, TUV, LR"}}
{"title":"E355 Material Cold Drawn Precision Welded Steel Tube DOM Tube EN10305-2 Standard","imgUrl":"https:\/\/img.chinax.com\/nimg\/72\/8a\/3d1712756a6799e7821ce2cf10c6-200x200-1\/e355_material_cold_drawn_precision_welded_steel_tube_dom_tube_en10305_2_standard_steel_pipe.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBWS-001","Certification":"TS16949, ISO9001","Place of Origin":"Jiangsu, China"}}
{"title":"EN10305-2 Standard Automotive Grade Welded Steel Tube with Honed Finish for","imgUrl":"https:\/\/img.chinax.com\/nimg\/19\/12\/46f4e3feba8aa9c7b070b66b7673-200x200-1\/en10305_2_standard_automotive_grade_welded_steel_tube_with_honed_finish_for_precision_applications.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HONGBAO","Certification":"TS16949, ISO9001","Place of Origin":"Jiangsu, China"}}
{"title":"EN10305-2 26MnB5 OD10 Precision Cold Drawn Welded Steel Tube for Hollow","imgUrl":"https:\/\/img.chinax.com\/nimg\/48\/8c\/c8b8b718e0707c470d5f658cdc2e-200x200-1\/en10305_2_26mnb5_od10_precision_cold_drawn_welded_steel_tube_for_hollow_stabilizer_bar.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBWS-001","Certification":"TS16949","Place of Origin":"Jiangsu China"}}
{"title":"EN10305-2 34MnB5 Welded Steel Tube with Cold Drawn Technique and 285\u2013360MPa","imgUrl":"https:\/\/img.chinax.com\/nimg\/26\/28\/4d58026fde48fd5c63de67af407d-200x200-1\/en10305_2_34mnb5_welded_steel_tube_with_cold_drawn_technique_and_285_e2_80_93360mpa_yield_strength_for_hollow_stabilizer_bar.jpg","attrs":{"Brand Name":"HONGBAO","Certification":"TS16949, ISO9001, OHSAS18001 etc.","Place of Origin":"China","Minimum Order Quantity":"1 ton"}}
{"title":"E355 EN10305-2 High Strength Cold Drawn Welded Steel Tube Carbon Steel Pipe for","imgUrl":"https:\/\/img.chinax.com\/nimg\/33\/48\/b74fcf9d84faf8951bdeb26e5c56-200x200-1\/e355_en10305_2_high_strength_cold_drawn_welded_steel_tube_carbon_steel_pipe_for_camshaft_production.jpg","attrs":{"Brand Name":"HONGBAO","Certification":"TS16949, ISO9001, OHSAS18001 etc.","Place of Origin":"China","Minimum Order Quantity":"1 ton"}}
With high dimension accuracy and fine surface quality, cold drawn precision steel tubing is suitable for hydraulic and pneumatic systems. Besides seamless cold drawn tubes, welded cold drawn tubes are also used for cylinders with smooth surfaces. BS EN 10305, a series of steel tube specifications for precision applications, includes 10305-2 grade E235 which is an ideal material for barrels and cylinders.
Product Specifications
Corresponding Standards: DIN 2393 St 37-2
Size Range: O.D. 50 - 380 mm; W.T. 1 - 25 mm
Length: 5 - 7 m
Application: Vehicle construction, furniture industry and general engineering
A roughness value of Ra < 0,8 μm applies to the inside surface, in compliance with ISO 4287 and ISO 4288. For the outside surface, EN 10305-2 is applicable.
BS EN 10305-2 E235 Straightness
Tubes for hydraulic and pneumatic applications are specially straightened with regard to the intended application. For tubes with an outside diameter D > 15 mm supplied in lengths greater than 1,000 mm, the deviation from straightness of any tube length L shall not exceed:
0,0015 L for ReH ≤ 500 MPa
0,002 L for ReH > 500 MPa
Manufacturing Capabilities
SHEW-E STEEL manufactures a wide range of cold drawn welded pipe products with excellent quality and services for tube-related solutions. We offer specially precision steel tubes with outside diameters from 50 to 380 mm and wall thicknesses up to 25 mm to suit a wide range of applications.
Production Method
The cold drawn welded tube is produced by drawing ERW (electric resistance welded tube). 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.
Main Data
Material: E355
Other Available Materials: E155, E195, E235, E275
Outer Diameter Range: 10-50mm
Wall Thickness Range: 1.5-8mm
t/D Ratio: ≥ 0.2 (Normal: t/D=0.1)
Standard: EN10305-2
Process: Cold Drawn, Cold Rolling
Typical Specification
Grade
Welding Typical Specification
Yield Strength
E355
Φ38×4.5
355~450 MPa
Chemical Component
Steel Number
Quality Level
Thickness/mm
Deoxidize Method
C(%)≤
Si(%)≤
Mn(%)≤
P(%)≤
S(%)≤
E235(Fe360)
A
≤16
N
0.22
-
-
0.050
0.050
B
>16-25
-
0.17
0.40
1.40
0.045
0.045
C
≤40
-
0.20
0.40
1.40
0.045
0.045
D
>40
E
0.17
0.40
1.40
0.045
0.045
NE
0.20
0.40
1.40
0.040
0.040
NE
0.17
0.40
1.40
0.035
0.035
GF
0.17
0.40
1.40
0.035
0.035
Delivery Conditions
+C: No heat treatment after the final cold drawing process
+LC: After the final heat treatment there is a suitable drawing pass
+SR: After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
+A: After the final cold drawing process the tubes are annealed in a controlled atmosphere
+N: After the final cold drawing operation the tubes are normalized in a controlled atmosphere
Advantages (Compared with Seamless Cold Drawn Tube)
Better shape
Improved quality surface
Tight eccentricity and wall thickness tolerances
Tube more safety
Good toughness at low temperature
USA Market: 90% of the cylinders in the USA market are produced with welded tubes
Cost: Fixed lengths more cheaper
Company Advantages
Top class of welding line: SG/76 Enhanced High-precise High Frequency Welding Tube Production Line. The tube is of small outer diameter (D) and thick wall thickness (t): t/D≥0.2, and high size precision.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1958
Total Annual:
>76000000
Employee Number:
700~1000
Ecer Certification：
Verified Supplier
Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali... Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali...
