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31/10/2023

The Iron-Making Process Equipment Upgrading and Modernization Project of Jiujiang is Making Steady Progress

The iron-making process equipment upgrading and modernization project of JIUGANG is making steady progress.

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30/10/2023

Two Shandong Steel projects were selected into the 2023 Shandong Provincial Key R&D Plan

Shandong Steel Group attaches great importance to the application and establishment of major scientific and technological projects, and regards major projects as an important platform to track cutting-edge steel technology, create industry-differentiated technological leadership, enhance product core competitiveness, and achieve high-quality corporate development.

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27/10/2023

72 Kilometers! “Shagang Made” traverses the Jiaozhou Bay

Recently, steel pipes were exclusively supplied by Shagang Jinzhou Pipeline Co., LTD. Jiaozhou Bay undersea natural gas pipeline project in the sea section starts welding, marking the construction of the sea section of the project in an all-round way.

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26/10/2023

Shougang Jingtang Converter Smelting Achieves New Breakthrough

Shougang Jingtang Steelmaking Department is full of energy, paying close attention to implementation, persisting in the pursuit of ultimate efficiency, digging deep into production line capabilities, optimizing organizational management, strengthening process coordination, improving equipment operation capabilities, and in the production model of "sealing one to ensure four", a new breakthrough was achieved with the converter smelting an average of 101 furnaces for seven consecutive days.

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25/10/2023

Shougang Jingtang Realizes First Batch Supply of Blade Steel for Medium Plate Shovels

Recently, Shougang Jingtang United Iron & Steel Co., Ltd. supplied blade steel for medium plate shovels in batches to a mechanical equipment company in Shandong, opening up a new situation for the large-scale supply of blade steel.

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25/10/2023

China's First Lightweight Hot Blast Stove Inspection Robot

A few days ago, the first domestic lightweight hot blast furnace inspection robot designed independently by the Equipment Department was officially put on duty at the No. A and B blast furnaces in the North District of the Ironmaking General Plant.

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20/10/2023

Pangang was selected into the list of Sichuan Province's 2022 leading scientific and technological innovation enterprises

The General Office of the Sichuan Provincial People's Government recently issued a notice on commending leading scientific and technological innovation enterprises and leading scientific and technological innovation entrepreneurs in 2022. 50 companies entered the relevant list, and Pangang was honored to be on the list.

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Answers

What are the differences in thickness and production process between medium and thick steel plates and hot rolled steel plates?
Medium and thick steel plates refer to steel plates with a thickness between 4-60mm, and their production processes mainly include hot rolling cold rolling, and medium and thick plate rolling. Hot rolling is to produce steel plates by continuous rolling after heating the steel billet to a certain temperature; cold rolling is to produce steel plates by continuous rolling after cooling the steel billet to a certain temperature; medium and thick plate rolling is to roll the steel plates produced by hot rolling or cold rolling again to achieve the required thickness.

Hot rolled steel plates refer to flat steel plates produced by hot rolling, and their thickness is generally between 3-20mm. The production process of hot-rolled flat plates mainly includes hot rolling, pickling, and leveling. Hot rolling is to produce steel plates by continuous rolling after heating the steel billet to a certain temperature; pickling is to remove the iron oxide and impurities on the surface of the steel plate; leveling is to level the steel plate through a leveling machine to achieve the required flatness.
What are the differences between PE lining and plastic coating?
PE lining is made of thermoplastic plastic pipes such as polyethylene (PE), heat-resistant polyethylene (PE-RT), cross-linked polyethylene (PE-X), and so on, which are lined on the inner wall of steel pipe according to the requirements of the conveying medium, so it has the advantages of both steel pipe and plastic pipe.
Plastic-coated composite steel pipe is a steel-plastic composite product with steel pipe as the base material and plastic powder as the coating material, with a plastic layer melt-coated on the inner surface and a plastic layer or other material anti-corrosion layer melt-coated on the outer surface.
According to the different inner coating materials, there are two types, one is polyethylene-coated steel pipe. The other is epoxy resin-coated steel pipe.
What are the acceptance criteria for hot-dip galvanized square tubes?
Hot-dip galvanized square tubes are generally judged to be qualified based on the appearance of the product. If the outer wall of the square tube has plating defects, pitting, white spots, heavy skin, bubbles, greening, etc., and the frequency of occurrence is too high, it is judged as an unqualified product. However, the product standard has a specified range for the allowable deviation of the product, which should meet the design requirements and relevant standards.


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