Most commonly used steel materials in industry will corrode to varying degrees when used in environments such as atmosphere, seawater, soil, and building materials. According to statistics, the global annual loss of steel materials due to corrosion accounts for about 1/3 of its total production. In order to ensure the normal use of steel products and extend their service life, steel anti-corrosion protection technology has always received widespread attention.
hot dip galvanized
Hot dip galvanizing is one of the most effective means of retarding environmental corrosion of iron and steel materials. It consists of immersing iron and steel products whose surfaces have been cleaned and activated in a solution of molten zinc. The surface is covered with a layer of zinc. alloy coating with good adhesion. Compared with other metal protection methods, the hot dip galvanizing process has the protective characteristics of the combination of the physical barrier and electrochemical protection of the coating, the bonding strength of the coating and the substrate, the compactness, durability, maintenance-free and economical coating It has unparalleled advantages in terms of performance and adaptability to the shape and size of products.
pre-galvanized
The processing technology of pre-galvanized steel pipe differs from that of hot-dip galvanized mainly in the raw materials used. The raw materials of pre-galvanized steel pipes are mainly galvanized steel coils, which are mainly produced by continuous galvanizing process, that is, galvanized coils are manufactured by continuously immersing rolled steel plates in a coating tank with molten zinc. After the factory processes the galvanized coil into a steel pipe, it is no longer necessary to re-galvanize, and it is only necessary to supplement with zinc on the welded part. The advantage of pre-galvanizing is that the zinc layer is more uniform and the appearance is more beautiful. Pre-galvanizing process is favored by people because of its low coating cost, excellent protection properties and beautiful appearance, and is widely used in construction, machinery, solar energy and other fields.
coating, marking, packaging
After producing the steel pipe, we will simply coat the surface of the steel pipe according to customer's requirements to prevent rust. Commonly coated with black paint, varnish, anti-rust oil, these materials may have a temporary anti-rust effect during transportation.
Huacheng Steel Pipe will paste barcodes on the inner wall of the steel pipe, and each barcode is unique. The barcode is equivalent to the steel pipe ID card under each unit, which records the material and production information of the steel pipe, such as heat number, pipe number, degree of steel etc After the coating process is completed, the production workers in the oil coating process will get the corresponding production information by scanning the barcode and spray the label according to the contract standards and requirements to ensure traceability. of the product.
Generally speaking, product packaging plays a crucial role in protecting products during transportation, so Huacheng Steel Pipe is also very concerned about this. Depending on the size, coating, type of processing, etc. of steel pipe, Huacheng Steel Pipe generally uses pipe caps, PVC wraps, nylon slings, galvanized tapes, fumigated wood and other materials to protect steel pipes. At the same time, our engineers can also customize product packaging design solutions that are firmer, more stable and easier to load and unload according to customer requirements.
inspection before shipment
Before sending the steel pipe to the customer, Lianzhong Steel Pipe inspectors will double check the appearance, packaging, spray mark, hang tag and other information of the steel pipe again to ensure that the customer does not receive any defective product. After passing the inspection, Huacheng Steel Pipe's quality assurance department will also issue a product quality certificate according to each batch of shipped products.
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