Q390C ERW STEEL PIPE

ERW steel pipe produced by Huayang Steel Pipe Co., Ltd. is recognized for its excellent performance and wide application in oil and gas field. These steel pipe products follow strict international standards, such as API 5L, GB/T 3091/API 5L, which ensure the high quality and reliability of the products. In terms of materials, Huayang ERW steel pipe covers Q235C, Q235B, Q355, L245, L290, X42, X46, X60, X80, S235JRH and other steel grades, which meets the requirements of different projects for material strength and corrosion resistance. Products are widely used in oil pipelines, natural gas pipelines, heating pipelines, water supply pipelines and other fields, among which epoxy powder coated ERW steel pipes are favored for their good corrosion resistance. Epoxy powder coating is a kind of polymer coating sprayed on the surface of steel pipe, which has the characteristics of corrosion resistance, wear resistance, acid and alkali resistance and aging resistance. This kind of coating is composed of high-performance fused epoxy powder, which forms a hard and dense anticorrosion layer by using the characteristics of thermosetting cross-linked molecular structure and chemical bond with steel. Epoxy powder coating is widely used in oil and gas pipelines because of its environmental protection, long service life and excellent adhesion.

Huayang's ERW steel pipe adopts advanced high-frequency welding technology to ensure excellent welding quality. In the welding process, the frequency and intensity of high-frequency current are accurately controlled, so that the edges of steel strips are evenly heated to the optimal welding temperature, and the tight integration between steel strips is realized. The weld has undergone strict nondestructive testing, including ultrasonic testing and X-ray testing, to ensure that there are no defects such as porosity, cracks and slag inclusion, and to ensure the integrity and strength of the weld. The tensile strength of the weld is equivalent to that of the base metal, and it can bear greater pressure and tension, and it can maintain stable performance under various complex working conditions, which provides a solid guarantee for the safe operation of the pipeline system, and can meet the requirements of high strength in applications such as industrial transportation and building structural support.

Huayang ERW steel pipe attaches great importance to surface quality. After careful pretreatment, the surface of the steel pipe has removed impurities such as oxide scale and oil stain, showing a smooth appearance. The advanced cold rolling process makes the surface of steel pipe have uniform roughness, which not only ensures good coating adhesion, but also reduces the friction resistance of fluid in the pipeline. In the production process, strictly control each working procedure to prevent mechanical damage such as scratches and dents. For the detection of surface quality, high-precision detection equipment is used to check one by one to ensure that each steel pipe meets the high-standard surface quality requirements. High-quality surface quality not only improves the aesthetics of the steel pipe, but also enhances its corrosion resistance, so that it can be used stably for a long time in harsh environments such as humidity, acid and alkali, and prolongs the service life and maintenance cycle of the steel pipe.

Huayang ERW steel pipe has convenience and good characteristics in maintenance. In daily maintenance, the steel pipe shall be inspected regularly for signs of deformation and corrosion. For slight corrosion, sand paper can be used to remove rust and then antirust paint can be applied for protection. In the installation process, pay attention to avoid collision and excessive distortion to prevent damage to the steel pipe. If the steel pipe is in a harsh corrosive environment, such as chemical enterprises or seaside facilities, it is recommended to carry out regular inspection and repair of the anti-corrosion coating to ensure the integrity of the coating. At the same time, in terms of conveying media, it is necessary to avoid conveying fluids containing a large number of impurities and particles to prevent erosion and wear on the pipe wall. Reasonable maintenance and maintenance measures can ensure the continuous and stable performance of Huayang ERW steel pipe within the design life, reduce the user's use cost and maintenance cost, and provide users with reliable pipeline solutions.