Pipes
Annealed Black Plain End Pipe
Our Annealed Black Plain Ended Pipes are CE certified. Each pipe is subjected to leak tightness test and eddy current (E/C) test under 50 bar pressure. Annealing is a thermal procedure applied at 1050 °C, which causes positive changes in the properties of the pipe such as strength, hardness and elasticity, and changes the material on a micro scale. Thus, simple welding and long life are ensured. The ovolite tolerance of our annealed black water pipes is narrow. When the pipes are brought end to end, they provide perfect overlap along all axes. There is no weld leakage and no weld gap that needs to be filled extra. Fast, comfortable and reliable pre-weld preparation. This simplifies butt welding. One end of our galvanised pipes is sleeved and one end is plugged and protective galvanised spray is applied on the threads. In this way, it is protected from corrosion.
Chemical and Mechanical Properties
Chemical Composition (%)(1) | ||||||||
| ||||||||
Standard Provision | ERDEMİR | C max. | Mn max. | Si max. | P max. | S max. | Cu max. | |
Standard | Quality | Quality No | ||||||
EN 10217-1 | P235TR1 | 3285(1)(2)(4) | 0,16 | 1,2 | 0,35 | 0.025 | 0.020 | 0,3 |
EN 10217-1 | P235TR1 | 3337 (3)(4) | 0,16 | 1,2 | 0.040 | 0.025 | 0.020 | 0,12 |
Explanations
The sum of Cr + Cu + Mo + Ni should be max. % 0.70.
- Cu alloy.
- Low silicon galvanised coatingis suitable steel
- Products of this quality are manufactured in full stillness and therefore have a minimum Al/N ratio of 2:1
Mechanical Properties (2) | ||||||
| ||||||
Standard Provision | ERDEMİR | Re N/mm2 (kg/mm2) | Rm(1) | A5 (%) min. | ||
Quality No | 1.50<d<16 min. | 16<d<40 min. | N/mm2 (kg/mm2) | |||
Standard | Quality |
|
| |||
EN 10217-1 | P235TR1 | 3285 | 235 (24.0) | 225 (23.0) | 360-500 (36.7-50.9) | 23 |
EN 10217-1 | P235TR1 | 3337(3) | 235 (24.0) | 225 (23.0) | 360-500 (36.7-50.9) | 23 |
Explanations
- Tensile test values are applied to ‘transverse’ test specimens.
- The mechanical values are guaranteed on hot rolled tape.
- It is produced up to a maximum thickness of 25 mm.
Galvanising Standards and Tolerances
Tolerances
- Et kalınlığı: -%12,5
- +%10 (Standartlara göre değişmektedir.)
- Ağırlık: ± %10 (Bir boy boruda, standarda göre değişmektedir.)
- ± %7.5 (in batches of 10 tonnes, depending on the standard)
- Length: ± 50mm (varies according to the standard.)
- Curvature 1mm/m
Dimensional and Visual Controls
- Tightness Tests / Nondestructive Inspections
- Electro Magnetic Test (Eddy Current Test)
- Ultrasonic Testing (Welding Seam)
- Residual Magnetic Field Measurement
- Hydrostatic Test
- Ultrasonic Testing (Phased Array Body Lamination Test) (On Demand)