Basic Info.
Product Description
Detailed Image:
Standard:
Chemical Composition and Mechanical Performance:
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 |
Other Specification:
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. | |
Package | 1. Bundle Packing. | |
2. Plain end or vanished as per customer's request. | ||
3. Wrapped in waterproof paper. | ||
4. Sackcloth with several steel strips. | ||
5. Pack in heavy tri-wall boxes. | ||
Steel bar from steel plant→Physical and chemical inspection→Surface treatment →Cutting → Heating→Hot piercing→Shell storage→Pickling and lubrication→Cold rolling→Heattreatmen →Pickling and lubrication→Cutting→Punching→Cold drawn→Size inspection→Outer and inner surface cleaning→NBK or GBK→Mechanics inspection→Chemical analysis
Antlrust oil palnting→print→packing→flnished storage→Dellivery with quality certificate
1.We adopt special techniques and special skill in the acid cleaning process to deal with the place where it's easy to form fold crevice;
2.Well organized process,especially annealing treatment in a severely technical manner;
3.In respect with lubrication,we adopt the international advanced level treating process in the world,and put the surface quality of our productsunder strict control in order to prevent causing surface crack.
Certificate:
Certificates:
According to EN 10204 3.1
Inspection Items:
Tensile stength, Yield stength, Elongation, Flattenging, FlaringChemical analysisEddy Current
Test 100%, Size and surface checking 100%Other test item can be arranged as per request