News
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Shandong Zhongao Steel Co., Ltd.
Shandong Zhongao Steel Co., Ltd. Our product system is rich and comprehensive, covering four core categories, fully meeting your procurement needs in different scenarios: Carbon Steel Series: Including carbon steel plates (such as NM500, SA516GR.70, A36/Q235, etc.), carbon steel coils (hot-rolled...Read more -
Let’s learn how stainless steel is polished.
In current industrial production, stainless steel polishing processes are mainly divided into four categories: mechanical polishing, chemical polishing, electrolytic polishing, and fluid polishing. The principles and operational characteristics of each process differ significantly, requiring prec...Read more -
Let’s learn about angle steel together.
Angle steel, commonly known as angle iron in the steel industry, is a long strip of steel with two sides forming a right angle. It belongs to the category of profile steel and is typically made of ordinary carbon structural steel and low-alloy steel. Angle steel classification: Angle steel is ...Read more -
New customs export regulations for 2026
Effective January 1, 2026, Announcement No. 79 of 2025 issued by the Ministry of Commerce and the General Administration of Customs officially came into effect, marking the resumption of export license management for certain steel products in my country after a 16-year hiatus. The core focus is o...Read more -
New Chinese steel export policy in 2026
The latest core policy for steel exports is Announcement No. 79 of 2025 issued by the Ministry of Commerce and the General Administration of Customs. Effective January 1, 2026, export license management will be implemented for steel products under 300 customs codes. The core principle is to apply...Read more -
Steel Briefing
Key Trends: The steel industry is reaching a turning point. Market data shows a profound adjustment in product structure, marking a historic shift. The output of hot-rolled rebar (construction steel), which long held the top position in production, has declined significantly, while hot-rolled wid...Read more -
Differences Between 201 and 304 Stainless Steel Plates
201 and 304 stainless steel plates are two of the most commonly used grades in austenitic stainless steel. Their core difference lies in chemical composition (content of nickel and chromium), which further leads to distinct variations in corrosion resistance, mechanical properties, cost...Read more -
Differences Between American Standard (ASTM) and Chinese Standard (GB) Pipes
The core differences between American Standard (predominantly ASTM series standards) and Chinese Standard (predominantly GB series standards) pipes lie in the standard system, dimensional specifications, material grades, and technical requirements. Below is a structured detai...Read more -
Let’s learn about natural gas pipelines.
Carbon Steel/Low Alloy Steel Pipes Material: X42, X52, X60 (API 5L standard steel grade), corresponding to Q345, L360, etc. in China; Features: Low cost, high strength, suitable for long-distance pipelines (high pressure, large diameter scenarios); Limitations: Requires anti-corrosion treatmen...Read more -
Rebar – an indispensable building material in construction
I. Diameter Specifications (Main Application Range) The diameter specifications of HRB400E rebar must strictly comply with the “Hot-rolled Ribbed Steel Bars for Reinforced Concrete” (GB/T 1499.2-2018). The nominal diameter range is 6mm-50mm, covering most stress scenarios i...Read more -
Understanding the strength of ASTM A500 square tubing
Welcome to our blog! In today’s article, we will discuss the American Standard ASTM A500 Square Pipe and its significance in the steel export industry. As a leading ASTM A500 standard steel pipe producer and supplier, Shandong Zhongao Steel Co., LTD. is committed to providing high-...Read more -
Advantages of using reinforcing steel bars, why choose reinforcing steel bars
The advantages of using reinforcing steel bars are mainly reflected in the following aspects: High strength: Reinforcing steel bars have high tensile and compressive strength, capable of withstanding large external loads, ensuring the stability and safety of buildings. Corrosion resistance: The s...Read more