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Galvanized steel pipes

Jun 13th, 2022 at 10:17   Phones & Tablets   Samālūţ   12 views Reference: 342

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Galvanized steel pipes are divided into cold galvanized steel pipes and hot-dip galvanized steel pipes. Cold galvanized steel pipes have been banned. In the 1960s and 1970s, developed countries in the world began to develop new types of pipes and gradually banned galvanized pipes. Four ministries and commissions including the Ministry of Construction of China have also issued a document stating that galvanized pipes are prohibited from being used Hot dipped galvanized steel pipes are made by reacting the molten metal with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to first pickle the steel pipe to remove iron oxideStainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and so on. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used as furniture and kitchenware. There are various connection methods for stainless steel pipes. The common types of pipe fittings are compression type, compression type, union type, push type, push thread type, socket welding type, union flange connection, welding type and welding and traditional connection. Combined derivative series connection method. These connection methods have different application scopes according to their different principles, but most of them are easy to install, firm and reliable. The sealing ring or gasket material used for the connection is mostly made of silicone rubber, nitrile rubber and EPDM rubber that meet the requirements of national standards, which relieves users from worries.

Scaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man-made structures. Scaffolds are widely used on site to get access to heights and areas that would be otherwise hard to get to. Unsafe scaffolding has the potential to result in death or serious injury. Scaffolding is also used in adapted forms for formwork and shoring, grandstand seating, concert stages, access/viewing towers, exhibition stands, ski ramps, half pipes and art projects. There are five main types of scaffolding used worldwide today. These are tube and coupler (fitting) components, prefabricated modular system scaffold components, H-frame / façade modular system scaffolds, timber scaffolds and bamboo scaffolds (particularly in China and India). Each type is made from several components which often include: A base jack or plate which is a load-bearing base for the scaffold; The standard, the upright component with connector joins; The ledger, a horizontal brace; The transom, a horizontal cross-section load-bearing component which holds the batten, board, or decking unit; Brace diagonal and/or cross section bracing component; Batten or board decking component used to make the working platform; Coupler, a fitting used to join components together; Scaffold tie, used to tie in the scaffold to structures; Brackets, used to extend the width of working platforms.

Steel coil, also known as coil steel. The steel is hot-pressed and cold-pressed into rolls. In order to facilitate storage and transportation, it is convenient to carry out various processing (such as processing into steel plates, steel strips, etc.). Formed coils are mainly hot-rolled coils and cold-rolled coils. Hot rolled coil is the processed product before the recrystallization of the steel billet. Cold rolled coil is the subsequent processing of hot rolled coil. The general weight of the steel coil is about 15-30T. my country's hot rolling production capacity has been continuously expanded. There are already dozens of hot rolling production lines, and some projects are about to start construction or put into production.

The hot rolled steel plate is made of continuous casting slab or blooming slab as raw material, heated in a walking furnace, descaled by high-pressure water, and then sent to the rough rolling mill. Rolling, laminar cooling (computer-controlled cooling rate) and coiling by coiler after finishing rolling. The head and tail of the straight hair curler are often tongue-shaped and fish-tail-shaped, with poor thickness and width accuracy, and the edges often have defects such as wave shape, folded edge, and tower shape. The coil weight is heavier, and the inner diameter of the steel coil is 760mm. It has good processing performance and compressive strength, and is used to produce high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an inner volume of less than 500L.