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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"}}
Description: Cold drawn welded pipe is an excellent choice for manufacturing multistage hydraulic cylinder tubes. The process and precision match that of seamless steel tube cold drawing, utilizing precision resistance welding (ERW) followed by precision drawing to manufacture EN 10305-2 EU mechanical cold drawn steel tube welding standards.
Chemical Compositions
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
E355(Fe510)
C
≤30
NE
0.20
0.55
1.60
0.040
0.040
D
＞30
NE
0.22
0.55
1.60
0.040
0.040
C
≤30
GF
0.20
0.55
1.60
0.035
0.035
D
＞30
GF
0.22
0.55
1.60
0.035
0.035
Manufacturing Process
According to EN10305-2 standard, cold drawing on ERW tubes produces tubes with high strength, high quality, and seamless characteristics.
The cold rolled welded tube is produced by drawing ERW (electric resistance welded tube). During this process, sizing (wall thickness, inside and outside diameter), weld integrity, and surface finish are closely controlled to produce tube of the required size and mechanical property characteristics.
Main Specifications
Material: E355 Other available materials: E235 Standard: EN10305-2 Technique: Cold Drawn OD: 6-80 mm WT: 0.5-10 mm
Advantages (Compared with Seamless Cold Drawn Tube)
Better shape
Improved quality surface
Tight eccentricity and wall thickness tolerances
Enhanced tube safety
Good toughness at low temperature
USA Market: 90% of cylinders in the USA market are produced with welded tubes
Cost-effective fixed lengths
Application
Producing camshafts
Delivery Condition
+C No heat treatment after the final cold drawing process
Equipment
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...
