What is Q235B Steel?
Q235B steel plate represents a remarkable balance of affordability and versatility. Defined under the national standard GB/T 700-2006 'Carbon Structural Steel', this low carbon steel is a staple in China's steel industry. Its cost-effectiveness makes it highly popular for applications where extreme performance isn't a necessity, yet reliability and durability are still required.
The Difference Between Q235A and Q235B
Diving deep into the difference between Q235A and Q235B, both of which belong to the carbon steel family, we find distinct variations in carbon content as specified by national standard GB700-88. Q235A is characterized by a carbon content range of 0.14-0.22%, while each grade offers unique advantages suited for different industrial purposes.
Typically, before departing from the steel mill, finished profiles are clearly marked on identification plates, allowing users to ascertain whether the material is Q235A, Q235B, or another variant. These plates also provide critical specifications: design pressure P ≤ 1.6MPa, operational temperatures from 0 to 350ºC, and a minimum steel plate thickness of 20mm.
The Application of Q235B Steel
Q235B Steel is a stalwart in civil engineering, offering strength and adaptability. This grade of steel is indispensable in crafting steel structures for diverse applications including industrial and residential buildings, components of power transmission towers, and essential parts for offshore structures. It is the backbone of oil platforms, automobile bridges, and many other critical constructions.
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The impressive lineup of hot rolled steel (Q235B) includes grades such as Q235B, SS400, S235Jr, and S355jr, each uniquely tailored for specific structural requirements.Further enhancing the selection are grades like 1015, RSt37-2, USt37-2, St37-2, 40B, Fe360B, RSt360B, USt360B, and the Ст series (Ст2пс, Ст2сп, Ст3пс, Ст3сп), each offering distinctive properties to meet various engineering challenges.

With over 15 glorious years of manufacturing excellence
Shanghai Baori Steel Industries Co., Ltd
Renowned for our professional approach, efficiency, and exceptional service
Conducting business with sincerity, we strive to connect with the global market
Our core business focuses on the manufacturing, processing, and distribution of top-tier silicon steel products. Our premier offerings include Hot dip aluminized steel coils/plates, stainless steel, galvanized steel, channel steel, rebar, pipe,and more...
With an expansive experience exceeding 15 years in manufacturing mastery and 20 years of flourishing in the domestic market, we boast a customized production capacity. Our dedicated team of over 20 skilled employees operates within a sprawling facility covering more than 8,000 square meters, with an impressive annual production capacity reaching 100,000 Tons.
We proudly represent as agents for esteemed giants like Baosteel, Wisco, Shougang Group, Shagang, An steel, Tisco among others. Our unmatched supply chain and competitive pricing cater to diverse quality and price level requirements. Our esteemed clientele spans the globe, reaching regions such as the Middle East, Africa, South America, Southeast Asia, Latin America, Europe, and beyond...



1. As a premier manufacturer with an extensive inventory, we are well-equipped to accommodate your customization needs,ensuring rapid and efficient delivery every time.
2. As a trusted and reputable manufacturer, we assure you of a consistent and reliable supply of products, at stable prices, complemented by impeccable after-sales service.
3. Our rigorous raw material screening standards and comprehensive quality testing methods guarantee excellence. We proudly maintain a qualified export product rate of 100%, and we welcome any third-party inspection prior to shipping, ensuring utmost confidence in our quality.
4. Strategically located near the bustling port of Shanghai, our logistics offer very competitive freight rates and prompt delivery.
For shipments where the unit weight is less than 4 tons, our packaging solution ensures durability and protection.
* We employ one layer of internal and external dedicated air anti-corrosion paper, effectively shielding against environmental elements.
* Each package includes a pair of internal and external paper angle protections, providing robust corner safeguarding.
* A single piece of internal and external surrounding protection plate is incorporated to enhance security during transit.
* Robust protection is further ensured with one pair of internal and external metal angle protection rings for comprehensive stability.
For unit weights of 4 tons or greater, our packaging strategy incorporates additional protective measures.
* A layer of internal and external dedicated air anti-corrosion paper is applied for superior defense against corrosion.
* An external buffering plate is included to absorb shocks and maintain product integrity.
* Each unit features a pair of internal and external paper angle protections, ensuring strong corner defense.
* We incorporate one piece of internal and external surrounding protection plate to maintain product condition throughout shipping.
* To reinforce security, a pair of internal and external metal angle protection rings are utilized, offering reliable stability for heavy units.
Q1: How many countries you already exported?
A1: We have already exported to several countries like America,Australia,South Africa,Pakistan, India,Japan,Russia,Saudi Arabia,Brazil,etc.
Q2: How long will it take to execute my order?
A2: Once we get your order,We will proceed ASAP.The production time within 7 days.
Q3 Can I get a sample for testing?
A3: Free samples.
Q4 Do you have inspection for the products before packing?
A4: 100% self-inspection for the products, we put the quality as our first priority.
Q5 Can I visit to your factory before the order?
A5: Sure, We take our customers seriously, welcome to visit our factory.