Cold Drawn En 10305-4 E235 E255 E355 +N Precision Seamless Steel Tubes for Hydraulic
Material:10# 20# 45# 16Mn A106 Gr A,B,A53 Gr B,ASTM A179,A315B,A335 P11,A335 P22,A335 P512CrMo 15CrMo 20CrMo 42CrMo 12Cr1Mov 10CrMo910 STF A25E215,E235,E255,E335ST35(E235), ST37, ST24(E255), ST52(E355)Standard:1. ASTM:ASTM A106GR.A; ASTM A106GR.B; ASTM A53GR.A; ASTM A53GR.B;ASTM A333; ASTM A334; AST......
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Product Description
10# 20# 45# 16Mn A106 Gr A,B,A53 Gr B,
ASTM A179,A315B,A335 P11,A335 P22,A335 P5
12CrMo 15CrMo 20CrMo 42CrMo 12Cr1Mov 10CrMo910 STF A25
E215,E235,E255,E335
ST35(E235), ST37, ST24(E255), ST52(E355)
Standard:
1. ASTM:ASTM A106GR.A; ASTM A106GR.B; ASTM A53GR.A; ASTM A53GR.B;
ASTM A333; ASTM A334; ASTM A192; ASTM A210;
2. JIS: G3452;G3457; G3454; G3456; G3461; G3455; STPG38; STS42; STS49; STPT49
3. DIN: St 37.0, St35.8I;ST42;ST45;ST52.4;ST52; TT St35N;10Ni14;15Mo3
4. EN 10216-1: P235GH TC1, P235GH TC2, 16Mo3
5. EN 10305-4: E215,E235,E255,E335
5. API:APL 5LAPI 5CT ,etc.
Surface: Black painted,rust oil coated, Smooth, Bright,etc.
Application:
For manufacture of pipeline,vessels,equipment,pipe fittings and steel structures for conveying gas,water and oil in both the oil and natural gas industries for manufacturer wall panel,ecomomizer,reheater,superheater and steam pipeline of boilers. For conveying oil,gas and other fluid.
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. | |
