Can you send samples?

Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.

What product information do I need to provide?

You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

What are the shipping ports?

Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.

About product prices?

Prices vary from period to period due to cyclical changes in the price of raw materials.

What are the certifications for your products?

We have ISO 9001, SGSand other certifications.

How long does your delivery time take?

In general, our delivery time is within 30-45 days, and may be delayed if the demand is extremely large or special circumstances occur.

Can I go to your factory to visit?

Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.

Does the product have quality inspection before loading?

Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.

How to pack the products?

The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation.

What is your working time?

In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.

Low Alloy Steel Q345B GB/T 1591- 2008 Q355B GB/T 1591- 2018

Type	Steel Sheet	Thickness	2.0-3.5mm
Place of Origin	Hebei, China	Grade	Q345B,Q345C,Q345D,Q345E,Q390,Q390B,Q390C
Delivery Time	within 7 days	Application	Ship Plate, Boiler Plate, Container Plate, making
Width	1251-1500mm	Flange Width	customized
Shape	Flat sheet	Technique	Hot Rolled
MOQ	1 Ton	Delivery term	FOB CFR CIF
Package	Standard Seaworth Packing	Alloy Or Not	Non-Alloy
Payment term	30%T/T Advance + 70% Balance	Processing Service	Welding, Punching, Cutting, Bending,

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Q345 is a kind of steel material. It is carbon alloy steel (C<0.2%), good="" overall="" performance="">

Widely used in Bridges, vehicles, ships, buildings, pressure vessels, etc.

Q represents the yield of this kind of material. 345 in the back refers to the yield value of this kind of material, which is about 345MPa. The yield value decreases with the increase of the thickness of the material.

345 Steel Properties and Introduction

Q345 steel is a Chinese GB standard Low Alloy High Strength Structural Steel, material density is 7.85 g/cm3, tensile strength is 470-630 Mpa, and yield strength is 345 MPa (datasheet tested with 16mm diameter steel bars or steel plates). According to GB/T 1591 – 2008, Q345 material has 5 quality grades: Q345A, Q345B, Q345C, Q345D and Q345E. “Q” is the first letter of Chinese Pinyin: “qu fu dian”, which means Yield Point, “345” is short for 345 MPa. For datasheet and specification, please see the tables below.

Product Name	Carbon Steel plate
Length	4m-12m or as required
Width	0.6m-3m or as required
Thickness	0.1mm-300mm or as required
Standard	AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc.
Technique	Hot rolled
Material	Q345B,Q345C,Q345D,Q345E,Q390,Q390B,Q390C,Q390D, Q390E, Q420,Q420B,Q42OC,Q420DQ420E, Q460, Q460D,Q500C,Q500D,Q500E, Q550C,Q550D,Q550E,Q620C,Q620D,Q620E,Q690A,Q690B,Q690C,Q690D,Q690E,Q690D,Q690C,Q890C,Q890D16Mo3,16MnL, 16MnR ,16Mng, 16MnDR HG785D,S690QL,50MN
Application	It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts.

WHY CHOOSE US

We have two 3500mm medium-thick plate lines, one heat treatment and quenching line, one tempering line, one 1250mm hot-rolled coil line, one 650mm medium-width strip line, and one high-speed wire rod line. Our annual production capacity reaches 10 million tons, making us a key plate production base in Hebei Province.

FAQs

Q
Can you send samples?

A
Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
Q
What product information do I need to provide?

A
You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Q
What are the shipping ports?

A
Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.
Q
About product prices?

A
Prices vary from period to period due to cyclical changes in the price of raw materials.
Q
What are the certifications for your products?

A
We have ISO 9001, SGSand other certifications.
Q
How long does your delivery time take?

A
In general, our delivery time is within 30-45 days, and may be delayed if the demand is extremely large or special circumstances occur.
Q
Can I go to your factory to visit?

A
Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.
Q
Does the product have quality inspection before loading?

A
Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.
Q
How to pack the products?

A
The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation.
Q
What is your working time?

A
In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.

Steel Plates, Strength That Lasts

Our steel plates deliver exceptional durability and reliability, designed to withstand heavy loads and harsh environments. From construction to manufacturing, they provide the solid foundation your projects deserve. Choose our steel plates for unmatched strength, long-lasting performance, and peace of mind.

What is the difference between high alloy steel and low alloy steel?

High alloy steel and low alloy steel differ mainly in alloy content and properties. High alloy steel contains more than 8% alloying elements, such as chromium, nickel, or molybdenum. This gives it excellent hardness, wear resistance, and corrosion resistance, making it suitable for tools, turbines, and chemical equipment. Low alloy steel has less than 8% alloying elements, often including manganese, silicon, or vanadium. It offers improved strength, toughness, and weldability compared to carbon steel, while being more cost-effective than high alloy steel.

Is low alloy steel the same as stainless steel?

No, low alloy steel is not the same as stainless steel. Low alloy steel contains less than 8% alloying elements, such as manganese, nickel, chromium, or vanadium, which improve strength, toughness, and hardenability. However, its corrosion resistance is limited, so it usually requires protective coatings or surface treatments.

Stainless steel, on the other hand, is a type of high alloy steel with at least 10.5% chromium. The chromium forms a thin, stable oxide film on the surface, giving stainless steel excellent corrosion resistance and making it suitable for food processing, medical instruments, and marine environments.

In short, while both are alloy steels, stainless steel is a high alloy with superior corrosion resistance, whereas low alloy steel focuses on strength and cost-effectiveness.