Square Hollow Hot Rolled Steel Section

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Quick Details

Thickness:	1.0 - 35 mm	Section Shape:	Square	Outer Diameter:	2020-600600
Place of Origin:	Shandong China (Mainland)	Secondary Or Not:	Non-secondary	Application:	Structure Pipe
Technique:	Cold Rolled	Certification:	CE	Surface Treatment:	oil,paint
Special Pipe:	Thick Wall Pipe	Alloy Or Not:	Non-alloy	Name:	Square Hollow Steel Pipe/Tube
Shape:	Square/Rectangular	Yield Strength:	360-380Mpa	Tensile Strength:	560-580Mpa
Elongation:	24-28%	Bend Test:	Qualified	Impact Value:	V-notch
Grade:	20#,45#,16Mn,A210,St45,Q235,Q345,Q195,Q215,10#-45#,A53-A369,ST35-ST52,Q195-Q345	Standard:	JIS G3465-2006,JIS G3466,GB/T 3094

Specifications

1.OD:15X15-800X800MM,20X30--600X800MM
2.Thick.:1.0--35.0MM

Square Hollow Section Image

Square Hollow Hot Rolled Steel Section

FAQ of Square Hollow Section

①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test
on every pipe before delivered out. Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

Any question, pls feel free to contact us !

Q:What are the different international standards for steel pipes?: The industry recognizes and utilizes multiple international standards for steel pipes. Some noteworthy standards are as follows: 1. ASTM A53: This standard encompasses black and galvanized steel pipes, both seamless and welded. It finds common application in low-pressure scenarios involving water, gas, and steam. 2. ASTM A106: This standard covers seamless carbon steel pipes designed for high-temperature usage. It sees widespread use in refineries, power plants, and petrochemical industries where elevated pressure and temperature conditions prevail. 3. ASTM A312: This standard pertains to austenitic stainless steel pipes that are seamless, welded, and heavily cold worked. It is frequently employed in industries such as chemical processing, food processing, and pharmaceuticals, where high temperatures and corrosive environments are encountered. 4. API 5L: This standard outlines the requirements for manufacturing seamless and welded steel pipes for use in pipeline transportation systems within the petroleum and natural gas industries. It specifies two product specification levels (PSL1 and PSL2). 5. EN 10216: This European standard addresses seamless steel pipes utilized for pressure purposes. It finds application in various industries, including power generation, chemical, and oil and gas. 6. JIS G3454: This Japanese standard focuses on carbon steel pipes used for pressure service, commonly employed in the transportation of water, gas, and oil. 7. DIN 2448: This German standard provides specifications for seamless steel pipes used for general purposes. It is extensively utilized across various industrial applications. These examples represent only a fraction of the numerous international standards governing steel pipes. Each standard delineates distinct requirements concerning manufacturing, dimensions, mechanical properties, and testing to ensure the pipes' quality and performance in specific applications. Manufacturers, suppliers, and users must comprehend and adhere to the relevant standards to guarantee the safe and reliable utilization of steel pipes.

Q:What are the different methods of pipe insulation for steel pipes?: Various methods can be employed to insulate steel pipes, each offering distinct advantages and suitability for specific applications. Some commonly utilized techniques encompass: 1. Fiberglass insulation: Esteemed as a highly favored pipe insulation method, fiberglass insulation comprises fine glass fibers and is obtainable in diverse formats like rolls, sheets, or pre-formed sections. It boasts a lightweight nature, effortless installation, and exceptional thermal insulation attributes. 2. Foam insulation: Another efficacious means of insulating steel pipes is foam insulation, which can be procured in various forms including rigid foam boards or spray foam. It is renowned for its high insulating capacity and its ability to seal gaps and cracks, thereby enhancing energy efficiency. 3. Rubber insulation: Rubber insulation, also referred to as elastomeric insulation, is extensively employed in HVAC systems to insulate steel pipes. It possesses flexibility, durability, and resistance to moisture, making it suitable for both indoor and outdoor applications. Additionally, rubber insulation offers commendable thermal and acoustic insulation properties. 4. Polyethylene insulation: Polyethylene insulation presents a cost-effective alternative for insulating steel pipes. It can be found in diverse formats such as foam tubes or molded sections and is effortless to install. Polyethylene insulation provides commendable thermal insulation, safeguards against condensation, and exhibits resistance to water vapor diffusion. 5. Cellular glass insulation: Cellular glass insulation, a rigid insulation material produced from crushed glass and a foaming agent, is acknowledged for its exceptional thermal insulation attributes as well as its resistance to moisture, fire, and chemicals. It is commonly employed in cryogenic and high-temperature applications. When selecting the appropriate pipe insulation method for steel pipes, it is imperative to consider factors such as temperature, moisture conditions, and project-specific requirements. Seeking guidance from a professional or insulation expert can aid in determining the optimal insulation method based on the specific needs and conditions of the project.

Q:Are steel pipes suitable for underground nuclear waste storage?: Yes, steel pipes are suitable for underground nuclear waste storage. Steel pipes are known for their durability, strength, and resistance to corrosion, making them an ideal choice for safely containing and transporting nuclear waste underground. Additionally, steel pipes can withstand the high pressures and temperatures associated with nuclear waste, ensuring the integrity of the storage system.

Q:What's wrong with the 3PP anticorrosive steel tube?: PP and PE are similar in processability, and the 3PE coating can be used to produce 3PP coatings without the need for a special 3PP coating line. However, the difference between PP and PE materials makes the 3PP and 3PE coatings show different properties, which can be applied to different environments. The advantages of 3PP coating on some properties make it possible to play an important role in the field of 3PE coating. Therefore, many foreign pipeline projects use 3PP anticorrosive coating.

Q:What is the difference between black steel pipes and galvanized steel pipes?: The main difference between black steel pipes and galvanized steel pipes lies in their coating. Black steel pipes are uncoated and have a dark, iron oxide layer on their surface, while galvanized steel pipes are coated with a layer of zinc to protect against corrosion. This zinc coating gives galvanized pipes a shiny, silver appearance and makes them more resistant to rust and other environmental factors.

Q:Is the diameter of the steel tube indicated by the outer diameter by the wall thickness or by the inside diameter by the wall thickness?: The specification for steel tubes is the outer diameter multiplied by the wall thickness.Generally speaking, the diameter of the pipe can be divided into outer diameter (De), inner diameter (D) and nominal diameter (DN).

Q:What are the standard dimensions for steel pipes?: The standard dimensions for steel pipes vary depending on the application and industry. However, common sizes range from ½ inch to 48 inches in diameter and have various wall thicknesses based on the required strength and pressure rating.

Q:How are steel pipes measured and sized?: Steel pipes are commonly measured and sized based on their outer diameter (OD) and wall thickness. The OD is measured using a caliper or tape measure, while the wall thickness can be determined by either a micrometer or ultrasonic thickness gauge. This information is crucial for classifying pipes into various standardized sizes, such as schedule or nominal pipe sizes, which are widely used in the industry.

Q:Do steel pipes expand or contract with temperature changes?: Steel pipes expand with temperature increases and contract with temperature decreases.

Q:How are steel pipes used in automotive manufacturing?: Automotive manufacturing extensively employs steel pipes for a multitude of purposes. The exhaust system represents one of the principal functions of steel pipes in this industry. In vehicles, the exhaust system is accountable for securely eliminating harmful gases generated during the combustion process. Steel pipes are employed in fabricating the exhaust manifold, which collects exhaust gases from the engine cylinders and directs them towards the exhaust pipe. Additionally, steel pipes are also utilized in constructing the chassis and frame of vehicles. The chassis offers structural support and aids in upholding the overall strength and stability of the vehicle. Due to their exceptional strength and durability, steel pipes are the optimal choice for manufacturing the chassis and frame. These pipes are frequently welded together to form a rigid and robust structure capable of withstanding diverse forces and impacts. Furthermore, steel pipes find application in the suspension system of automobiles. The suspension system is responsible for delivering a comfortable and smooth ride by absorbing shocks and vibrations. Steel pipes are employed in manufacturing suspension components such as control arms, tie rods, and sway bars. These components contribute to maintaining the stability, handling, and overall performance of the vehicle. Moreover, steel pipes are utilized in the fuel system of automobiles. They are responsible for transporting fuel from the fuel tank to the engine. These pipes necessitate resistance to corrosion and possess high tensile strength to guarantee the safe and efficient delivery of fuel. In conclusion, steel pipes play a pivotal role in automotive manufacturing. They are utilized in diverse applications including the exhaust system, chassis and frame construction, suspension system, and fuel system. The incorporation of steel pipes in these areas ensures the durability, strength, and performance of vehicles while simultaneously upholding safety and efficiency.

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