Straight seam steel pipe preservation is particular

In modern industry,straight pipe as an important pipeline material,is widely used in petroleum,chemical industry,natural gas,water conservancy,construction and other fields.Its quality is not only related to the smooth progress of the project,but also directly related to the safety and stability of the whole system.However,after the manufacturing of the straight seam steel pipe,how to properly preserve it to prevent its damage or performance decline due to various reasons is a work that needs great attention.In this paper,the preservation of straight seam steel pipe will be introduced in detail from the aspects of preservation environment,preservation method,regular inspection and maintenance.

First,the preservation environment of straight steel pipe

Dry and moisture-proof

Humidity is one of the key factors affecting the preservation quality of straight seam steel pipe.The humidity is too high,the surface of the steel pipe is easy to form an oxide layer,and then produce rust.Therefore,the warehouse storing the straight seam steel pipe should be kept dry,and the humidity should be controlled within a certain range.In general,the ideal warehouse humidity should be kept below 60%to effectively prevent corrosion of steel pipes.

well-ventilated

Good ventilation can keep the air circulating in the warehouse and avoid the accumulation of harmful gases or moisture.Ventilation facilities should be rationally arranged to ensure that every corner of the warehouse can get sufficient air exchange.Especially in the wet season,it is particularly important to strengthen ventilation.

Avoid direct sunlight

The straight seam steel pipe exposed to the sun for a long time will accelerate the aging due to the action of ultraviolet light,and the surface coating is easy to fall off,resulting in the loss of protection of the steel pipe.Therefore,the warehouse should be equipped with shading facilities to avoid direct sunlight on the steel pipe.

Suitable temperature

Too high or too low temperature will affect the performance of the straight seam steel pipe.If the temperature is too high,the stress inside the steel pipe will change,which may lead to deformation or cracking;The temperature is too low,the toughness of the steel pipe will be reduced,easy to crack.Therefore,the temperature of the warehouse should be controlled within a suitable range,usually recommended between 5°C and 35°C.

Keep away from corrosive substances

The straight seam steel pipe should be away from corrosive substances such as acid and alkali to prevent the performance of the steel pipe from being degraded due to corrosion.There should be isolation facilities in the warehouse to ensure that steel pipes are kept at a safe distance from corrosive substances.

Preservation method of straight seam steel pipe

Reasonable stacking

The stacking of straight seam steel pipe should follow the principle of"safety,stability and convenience".The stacking height should be determined according to the specifications,materials and warehouse conditions of the steel pipe,generally not more than 3 meters.When stacking,special wood or supports should be used to ensure that the bottom of the steel pipe is kept at a certain distance from the ground to prevent moisture.At the same time,there should be an appropriate gap between the steel pipes to facilitate ventilation and inspection.

Overlay protection

In order to prevent the surface of the steel pipe from being polluted or damaged,the steel pipe can be protected by covering such as plastic film and canvas.The covering should be made of corrosion-resistant and wear-resistant materials and replaced regularly.

Periodic rotation

For long-term stacked straight seam steel pipes,they should be rotated regularly to prevent deformation caused by long-term pressure.The frequency of rotation should be determined according to the material,specifications and warehouse conditions of the steel pipe,and it is generally rotated once every six months or a year.

Antirust treatment

For the rusted straight seam steel pipe,rust removal and anti-rust treatment should be carried out in time.Rust removal can be mechanical rust removal,chemical rust removal and other methods,rust prevention can be applied by coating anti-rust oil,anti-rust paint and other measures.

Regular inspection and maintenance of straight seam steel pipe

Visual inspection

Regularly inspect the appearance of the straight seam steel pipe to observe whether the surface has corrosion,scratches,cracks and other defects.The defects found should be recorded in time and corresponding measures should be taken.

Dimensional measurement

Regularly measure the size of the straight seam steel pipe,including diameter,wall thickness,length,etc.,to ensure that it meets the design requirements.For steel pipes with large size deviations,they should be stored separately to avoid misuse.

Performance test

Regular performance testing of the straight seam steel pipe,including tensile strength,yield strength,hardness and other indicators.The performance test should be conducted in a professional laboratory to ensure the accuracy of the test results.For unqualified steel pipes,should be prohibited from use.

Anticorrosive coating inspection

For straight seam steel pipes coated with anti-corrosion coating,the integrity of the coating should be checked regularly.When the coating falls off,cracks,etc.,it should be repaired or re-coated in time.

Fire safety

The warehouse should be equipped with adequate firefighting equipment and its effectiveness should be checked regularly.At the same time,a detailed emergency plan should be formulated to ensure a rapid response in the event of an emergency such as a fire.

Common problems and solutions in the preservation of straight seam steel pipe

Corrosion problem

Reasons:high humidity,poor ventilation,anti-corrosion coating failure.

Solution:Strengthen the humidity control and ventilation management of the warehouse to ensure the integrity and effectiveness of the anti-corrosion coating.For the rusty steel pipe,timely rust removal and rust prevention treatment.

Deformation problem

Reason:long-term pressure,improper stacking and so on.

Solution:Reasonable stacking of steel pipes to avoid long-term pressure.For the deformed steel pipe,corresponding repair measures should be taken according to its deformation degree.

Coating peeling problem

Reasons:poor coating quality,improper surface treatment of steel pipes.

Solution:Use high-quality anti-corrosion coating materials to ensure that the surface of the steel pipe is clean and dry before coating.For the steel pipe whose coating falls off,repair or re-coat it in time.

The problem of unclear identification

Cause:the identification plate is damaged,the identification information is incomplete,etc.

Solution:Check and replace the sign plate regularly to ensure that the identification information of each steel pipe is clear and accurate.For steel pipes with unclear marks,they should be re-marked

Warehouse management disorder problem

Reasons:management system is not sound,personnel training is insufficient.

Solution:Establish a sound warehouse management system and clarify the management requirements.Regular training of warehouse management personnel to improve their business level and management ability.

Conclusion

The preservation of straight seam steel pipe is a complicated and meticulous work,which needs to consider many factors comprehensively.Through reasonable control of the preservation environment,scientific preservation methods,and strengthening regular inspection and maintenance measures,the preservation quality of the straight seam steel pipe can be effectively improved and its service life can be extended.At the same time,attention should also be paid to solving various problems that may occur during the preservation process to ensure that the straight seam steel pipe can play the best performance when needed.In the future development,with the progress of science and technology and the continuous optimization of the process,the preservation method of straight steel pipe will also be more perfect and scientific.