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What are the differences between cold rolling and hot rolling processes?

Advantages of hot rolled coil: Advantages: Hot rolled steel coil can destroy the casting structure of the ingot, refine the grain of the steel, eliminate the microstructure defects, make the steel structure dense, improve the mechanical properties. This improvement is mainly reflected in the rolling direction, so that the steel is no longer isotropic to a certain extent; The bubbles, cracks and looseness formed during the casting of hot rolled steel coils can also be welded under high temperature and pressure. Cold rolled coil disadvantages: 1.After hot rolling, the non-metallic inclusions (mainly sulfides and oxides, and silicates) inside the…

What is hot rolled coil? What is it used for?

Hot rolled coils are steel plates that are heated and rolled by roughing and finishing mills. China is the world’s largest producer, consumer and exporter of hot-rolled coils, with output reaching 232 million tons in 2015. The development of iron and steel industry has effectively supported the steady and rapid development of China’s national economy, and the improvement of hot-rolled coil production and quality has also better met the growing actual needs of China’s construction, machinery manufacturing and other industries. The main uses of hot rolled coil Hot-rolled coil is an important type of steel, mainly reflecting the demand…

ZHOGNTANG INVITATION OF “2024 CONSTRUCTION & BUILDING MATERIALS”

2024 CONSTRUCTION & BUILDING MATERIALS BOOΤH: Hall No. 1 E1 DATES : Sunday 2 June to Wednesday 5 June 2024 VENUE: Riyadh FRONT Exhibition & Conference Center – RFECC (Hall No. 1) Airport Road, Al Falah District, Riyadh 13314, Kingdom of Saudi Arabia Zhongtang Iron And Steel (shandong) Group will Attend the exhibition“2024 CONSTRUCTION & BUILDING MATERIALS”， We will send an elite team of 5 professionals to Saudi Arabia and look forward to meeting new and existing customers. It Mainly Produces Galvanized Steel, Galvalume Steel, PPGI And PPGL; Also We Supply Various Types Of Steel Material Including Carbon Steel, Stainless…

The Classification And Use Of Galvanized Coil

Galvanized steel plate is a steel plate with a layer of zinc plated on the surface. Galvanizing is an economical and effective anti-corrosion method that is often used. About half of the world’s zinc production is used in this process galvanized steel plate is to prevent corrosion on the surface of the steel plate to extend its service life, coated with a layer of metal zinc on the surface of the steel plate, this zinc coated steel plate is called galvanized steel plate. According to production and processing methods can be divided into the following categories: ① Hot dip…

Invitation to the “24th Kazakhstan International Building & Interior Exhibition”Fair

ASTANA BUILD 24th Kazakhstan International Building & Interior Exhibition DATES: 29-30 May VENUE: Expo Ctre, Astana, Kazakhstan EXHIBITION ADDRESS:Mangilik El avenue 53/1, Astana,010000, Kazakhstan BOOTH: A021 The company will send 6 business operators to the exhibition to provide professional steel solutions and knowledge answers, looking forward to meeting you. About Zhongtang Zhongtang Iron And Steel (Shandong) Group Co.,Ltd. was established in 1998, as a professional steel manufacturer engaged in research, manufacture, sales and services. Our main products are carbon steel, stainless steel, galvanized, color coated steel and non-ferrous metals, such as aluminum, copper and so on; We provide our…

What is silicon steel? What is the difference between unoriented silicon steel and oriented silicon steel?

1 What is silicon steel? Silicon steel is also called “electrical steel”, is a very low carbon ferrosilicon soft magnetic alloy. The addition of silicon can not only increase the resistivity and maximum permeability of iron, on the other hand, it can also reduce the core loss (iron loss), coercivity, magnetic aging. It is generally used in the iron cores of various motors and transformers, and is an indispensable soft magnetic alloy in the power, electronics and military industries. 2 Classification of silicon steel (1) According to the production process: can be divided into hot-rolled and cold-rolled silicon steel,…

Introduction of several common color coated roll materials

一、PPGI color coating volume material PPGI color coating, refers to the surface coated with organic coating cold rolled steel plate, common PE, SMP, HDP, PVDF and other coating types. It is characterized by excellent weather resistance, corrosion resistance and decorative properties, and is widely used in construction manufacturing, home appliances and transportation and other fields. PPGI color coated rolls have smooth surface, bright color and beautiful appearance, good weather resistance and thermal stability. 二、PPGL color coating volume material PPGL color coating roll refers to the surface coated with zinc-aluminum alloy coating, its corrosion resistance is better than PPGI, suitable…

The difference between duplex stainless steel and stainless steel?

The difference between duplex stainless steel and ordinary steel: duplex stainless steel has the characteristics of austenitic stainless steel and ferritic stainless steel! In other words, it has the characteristics of stainless steel and carbon steel! Compared with ferrite, it has higher plasticity, toughness, no room temperature brittleness, resistance to intergranular corrosion and high weldability, ferritic stainless steel to maintain 475℃ high brittleness, high thermal conductivity, superplasticity. Compared with austenitic stainless steel, it has high strength, intergranular corrosion resistance and chloride stress corrosion resistance. Duplex stainless steel has excellent corrosion resistance and is also a nickel stainless steel. 2507…

Seamless pipe material classification

Material Classification Steel pipe product name Steel pipe spot material Steel pipe execution standard Steel pipe spot specification Steel pipe product application alloy pipe 12Cr1MoVG GB5310-2008 ∮8-1240*1-200 Suitable for petroleum, chemical, electric power, boiler industry with high temperature resistance, low temperature resistance, corrosion resistance with seamless steel pipe 12CrMoG GB6479-2000 15CrMoG GB9948-2006 12Cr2Mo<A335P22> DIN17175-79 Cr5Mo<A335P5> ASTM SA335 Cr9Mo<A335P9> ASTM SA213 10Cr9Mo1VNb<A335P91> JISG3467-88 15NiCuMoNb5<WB36> JISG3458-88 12Cr2MoWVTiB<钢研102> stainless steel tube 0Cr18Ni9<304> GB/T14975-2002 ∮6-630*0.5-60 Applicable to petroleum, aviation, smelting, food, water conservancy, electric power, chemical, chemical, chemical fiber, medical machinery and other industries 00Cr19Ni10<304L> GB/T14976-2002 00Cr25Ni20<310S> GB13296-2007 0Cr17Ni12Mo2<316> ASTM A213 00Cr17Ni14Mo2<316L> ASTM…

Seamless tube tips

Essential Information Seamless steel pipes are divided into two categories: hot rolled and cold rolled (dial) seamless steel pipes. Hot-rolled seamless steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, rust steel pipe, petroleum cracking pipe, geological steel pipe and other steel pipes. In addition to the general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel, stainless steel pipe, petroleum cracking pipe, other steel pipes, also includes carbon thin-wall steel pipe, alloy thin-wall steel pipe, rust thin-wall…

The 48th Southern International Construction Trade Fair has begun

Team partners have arrived at the exhibition in Serbia, the site has been arranged, ready to receive customers, About Zhongtang Zhongtang Iron And Steel (Shandong) Group Co.,Ltd. was established in 1998, as a professional steel manufacturer engaged in research, manufacture, sales and services. Our main products are carbon steel, stainless steel, galvanized, color coated steel and non-ferrous metals, such as aluminum, copper and so on; We provide our customers with professional and customized products and services; The company is committed to providing reliable and satisfactory customized supply solutions for steel and metal products to global users. Zhongtang Iron And Steel…

An introduction to Wear Resistant plates

Product Name High Quality Low Price Hard-faced Wear Plate The Wear Plate The Boiler Wear Plate GB NM300,NM360,NM400,NM450,NM500 SS HARDOX400、HARDOX450、HARDOX500、HARDOX600 DIN XAR400、XAR450、XAR500、XAR600、Dillidur400、Dillidur500 NBN QUARD400、QUARD450、QUARD500 NF FORA400、FORA500、Creusabro4800、Creusabro8000 JIS JFE-EH360、 JFE－EH400、JFE－EH500、WEL-HARD400、WEL-HARD500 SFS RAEX400、RAEX450、RAEX500 Capacity 4,500 tons/Month Steel/Grade C Si Mn P S AL Cr+Ni+Mo Nb+V+Ti NM360/AR360 0.10-0.30 0.20-0.40 1.00-2.00 ≤0.015 ≤0.003 ≥0.20 <0.6 Trace Amount NM400/AR400 0.10-0.40 0.20-0.40 1.00-2.00 ≤0.015 ≤0.003 ≥0.20 <0.9 NM450/AR450 0.10-0.40 0.20-0.40 1.00-2.00 ≤0.015 ≤0.003 ≥0.20 <1.2 NM500/AR500 0.10-0.40 0.20-0.45 1.00-2.00 ≤0.015 ≤0.003 ≥0.20 <1.5 NM550/AR550 0.10-0.50 0.20-0.45 1.00-1.50 ≤0.015 ≤0.003 ≥0.20 <2.0 NM600/AR600 0.10-0.50 0.20-0.45 1.00-1.50 ≤0.015 ≤0.003 ≥0.20 <2.5 Mechanical property Grade Thickness (mm) tensile…

What are the differences between cold rolling and hot rolling processes?

What is hot rolled coil? What is it used for?

ZHOGNTANG INVITATION OF “2024 CONSTRUCTION & BUILDING MATERIALS”

The Classification And Use Of Galvanized Coil

Invitation to the “24th Kazakhstan International Building & Interior Exhibition”Fair

What is silicon steel? What is the difference between unoriented silicon steel and oriented silicon steel?

Introduction of several common color coated roll materials

The difference between duplex stainless steel and stainless steel?

Seamless pipe material classification

Seamless tube tips

The 48th Southern International Construction Trade Fair has begun

An introduction to Wear Resistant plates

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