Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Your message must
be between 20-3,000 characters!
Submit Requirement
Thank You!
Your requirement has been sent. we will contact you quickly!
{"title":"EN10305-1 E235+N Precision Seamless Tube For Automobile Nbk Surface","imgUrl":"https:\/\/img.chinax.com\/nimg\/55\/c6\/a7c01b3d7e0b0d8fbd73eccbf986-200x200-1\/en10305_1_e235_2bn_precision_seamless_tube_for_automobile_nbk_surface.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"E235+N,ST37.4,ST52.4","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Place of Origin":"CHINA"}}
{"title":"Carbon steel seamless Boiler Tube, cold-drawn tube, ASTM A179","imgUrl":"https:\/\/img.chinax.com\/nimg\/11\/26\/a1ebdd66ba563086f9426395d6e6-200x200-1\/carbon_steel_seamless_boiler_tube_2c_cold_drawn_tube_2c_astm_a179.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"A179","Certification":"ISO9001-2008, API 5L, API 5CT","Place of Origin":"CHINA"}}
{"title":"Alloy Steel Seamless Tube ASTM A209 T1, T1A, T1B, ASTM A210 A1, DIN 1629 St52.4,","imgUrl":"https:\/\/img.chinax.com\/nimg\/e5\/e2\/0257457aa401515f383a206403fb-200x200-1\/alloy_steel_seamless_tube_astm_a209_t1_2c_t1a_2c_t1b_2c_astm_a210_a1_2c_din_1629_st52_4_2c_st52_2c_oild_surface_2c_plain_end_2c_m_.jpg","attrs":{"Place of Origin":"China, USA, Korea, UE","Brand Name":"YUHONG SPECIAL STEEL","Certification":"ISO9001-2008, API 5L, API 5CT, PED, AD-2000, EN10204-3.1B","Minimum Order Quantity":"5 tons"}}
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)
Final supply conditions:
Cold finished(hard)BK
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high
resistance to deformation.
Cold finished(soft)BKW
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further
processing allows a certain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relieved BKS
Heat treatment is applied following the last cold forming process. Subject to appropriate processing
conditions, the increase in the residual stresses involved enables both forming and machining to a certain
degree.
Annealed GBK The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized NBK
The last cold forming process is followed by annealing above the upper transformation point in a controlled
atmosphere.
Chemical Composition
Steel Grade
Chemical Components (%)
Steel Name
Steel Number
C
max.
Si
max.
Mn
max.
P
max.
S
max.
AL
min.
E215
1.0212
0.10
0.05
0.7
0.025
0.025
0.025
E235
1.0308
0.17
0.35
1.2
0.025
0.025
/
E355
1.058
0.22
0.55
1.6
0.025
0.025
/
Delivery Conditions
The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:
Designation
Symbol
Description
Cold drawn/hard
+C
No heat treatment after the final cold drawing process.
Cold drawn/soft
+LC
After the final heat treatment there is a suitable drawing pass.
Cold drawn and stress relieved
+SR
After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.
Annealed
+A
After the final cold drawing process the tubes are annealed in a controlled atmosphere.
Normalized
+N
After the final cold drawing operation, the tubes are normalized in a controlled atmosphere.
Delivery Condition Symbol in accordance with EN10305 and DIN2391
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...