Pickling line of Steel Strip with Push-Pull type (large capacity)
The seller shall be responsible for the completeness and reliability of the process performance and equipment; the buyer shall be responsible for any design and equipment supply changes caused by technical solution changes that exceed contract scope.
Seller supply scope does not include spare parts.
The seller shall be responsible for instruction for equipment installation, commissioning to guaranty that the commissioning becomes successful. The seller shall be responsible for instructions to the commissioning, so that qualified acid pickled coils are produced.
Commissioning to public and auxiliary facilities shall be responsible by the buyer.
Equipment filling in material (such as lubrication oil, hydraulic oil and gear oils, etc. inside the equipment) shall be responsible by the buyer.
Each energy connecting ports are connected to the using site by the buyer
Major data of the whole Acid Pickling Unit
The major technical targets for this Acid Pickling Unit shall be provided after the initial designing.
Emission amount of the pollutants shall be provided after initial designing.
Pollutants and corresponded emission amount shall be provided after initial design.
“Three Waste” treatment measures shall be provided after initial design.cid fog
Acid fog from acid pickling tank and water washing tank shall be sent into acid fog washing tower for purification, then drawn out by air turbine and discharged into the atmosphere from chimney. Washing water is discharged into sewage pit for Party A’s future treatment
The pickling waste acid is processed by the buyer in acid regeneration plant.
Guaranteed Items and guaranteed value
Function assessment: carbon steel |
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Residual chlorine ion on the strip surface | ≤5mg/m2(Single side ) | Same as above | Number of test steel coils: 3 coils for each sizeThe coil to be tested is in the same condition as the coil when the line speed is tested. |
Residue content on the strip surface | ≤50mg/m2(Single side) | σs≤500MPa Yield strength: σs≤500MPa | Number of test steel coils: 3 coils for each size continuously The coil to be tested is in the same condition as the coil when the line speed is tested. Chemical analysis |
Surface quality | No crack edge, rolled edge, scratch on strip surface | σs≤500MPa Yield strength: σs≤500MPa | Visual inspection |
Scratches refer to scratches caused on this production line. |
Coiling quality | During coiling coils with neat edge, adjacent lap≤1mm | On EPC side, the first five and last three laps of coil are excluded. | |
Environment protection emission | Acid mist emission chimney HCL emission value ≤20mg/Nm³ | During normal production | Buyer's lab or third party |



