Cold Drawn En 10305-4 E235 E255 E355 +N Precision Seamless Steel Tubes for Hydraulic
Guangzhou Kingmetal Steel Industry Co., Ltd.- Type：Seamless
- Technique：Cold Drawn
- Material：Alloy Steel
- Surface Treatment：Oiled
- Usage：Hydraulic,Automobile Pipe, Special Purpose
- Section Shape：Round
Base Info
- Model NO.：EY-PT
- Wall Thickness：0.5 - 6 mm
- Length：2-12m
- Delivery Time：15-30 Days After Down Payment
- Alloy or Not：Non Alloy
- Standard or Not：Standard
- Secondary or Not：Non Secondary
- Price Term：Fob, CIF, CNF
- Payment：L,C, T,T
- Transport Package：Export Standard Packing
- Specification：3.75 - 80mm
- Trademark：Kingmetal
- Origin：China (Mainland)
- HS Code：730419
- Production Capacity：2000ton,Tons Per Month
Description
Table 1- Chemical composition
Steel Grade
C%
Si%
Mn%
P%
S%
AL%
E215
≤0.10
≤0.05
≤0.7
≤0.025
≤0.025
≥0.025
E235
≤0.17
≤0.35
0.4-1.2
≤0.025
≤0.025
E255
≤0.21
≤0.35
0.4-1.1
≤0.025
≤0.025
E355
≤0.22
≤0.55
≤1.6
≤0.025
≤0.025
Table 2 - Mechanical properties at room temperature
Delivery Condition
BK
BKW
GBK
NBK (N)
Steel Grade
Rm
A %
Rm
A %
Rm
A %
Rm
ReH
A %
Mpa (Min)
(Min)
Mpa(Min)
(Min)
Mpa(Min)
(Min)
Mpa(Min)
Mpa(Min)
(Min)
E215
430
8
380
12
280
30
290~430
215
30
E235
480
6
420
10
315
25
340~480
235
25
E255
580
5
520
8
390
21
440~570
255
21
E355
640
4
580
7
450
22
490~630
355
22
End Shape
Beveled end, plain end, vanished, or adding plastic caps to protect the two ends as per customer's
requirements
Surface
Treatment
Oiled, Galvanized, Phosphate etc
Technique
Cold drawn & cold rolled
Application
1. Automotive and mechanical pipes
2. Petroleum cracking pipes
3. High Pressure Boiler Pipe
4. Low and middle pressure fluid transportation pipeline
5. Chemical fertilizer equipment pipes
6. Heat exchanger pipes
Delivery
Conditions
1. BK (+C)
No heat treatment after last cold forming process.
2. BKW (+LC)
After last heat treatment there is a light finishing pass (cold drawing)
3. BKS (+SR)
After the final cold forming process the tubes are stress relieve annealed.
4. GBK (+A)
After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK (+N)
After the final cold forming process the tubes are annealed above the upper transformation
point in a controlled atmosphere.
