Structural Steel Pipe

Your Leading Structural Steel Pipe Supplier

Hebei Huayang Steel Pipe Co., Ltd. was established in 2005 with fixed assets of RMB 1.2 billion. In 2024, Hebei Huayang Steel Pipe Co., Ltd. was ranked 69th among the top 100 private enterprises in Hebei Province, China and 57th among the top 100 manufacturing enterprises. Structural steel pipes are hollow cylindrical tubes that are strong enough to transport chemicals and bear heavy weight loads, which is why they have numerous applications across a range of industries.

Carbon Steel Seamless Round Pipe
Brand: Huayang
Origin: China
Diameter: 76mm-1442mm
Thickness: 2.5mm-50mm
Material: carbon steel
Standards: national standard, American standard, European standard, British standard, etc.
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Carbon Steel Seamless High Strength Structural Pipe
Brand: Huayang
Origin: China
Diameter: 76mm-1442mm
Thickness: 2.5mm-50mm
Material: carbon steel
Standards: national standard, American standard, European standard, British standard, etc.
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API 5L Structural Steel Pipe
Brand: Huayang
Origin: China
Diameter: 76mm-1442mm
Thickness: 2.5mm-50mm
Material: carbon steel
Standards: national standard, American standard, European standard, British standard, etc.
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Q235B Structural Steel Pipe
Brand: Huayang
Origin: China
Diameter: 76mm-1442mm
Thickness: 2.5mm-50mm
Material: carbon steel
Standards: national standard, American standard, European standard, British standard, etc.
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Large Diameter Structural Steel Pipe
Brand: Huayang
Origin: China
Diameter: 76mm-1442mm
Thickness: 2.5mm-50mm
Material: carbon steel
Standards: national standard, American standard, European standard, British standard, etc.
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Why Choose Us?

Fully Equipped

Huayang currently has 17 new automated steel pipe production lines and an advanced testing center that can conduct various physical and chemical tests on steel pipes.

Customized Solutions

We provide steel pipe processing services and provide customized solutions such as customized pipe sizes, materials and specifications to meet specific customer requirements.

Strong Strength

Hebei Huayang Steel Pipe Co., Ltd. was established in 2005 with a registered capital of RMB 500 million, covers an area of 600,000 square meters, has more than 600 employees, annual sales revenue of nearly RMB 10 billion, and an annual production capacity of 2 million tons.

Production Market

Our products are exported to more than 80 regions including Southeast Asia, the Middle East, South America, Europe and the United States, and "Huayang" brand steel pipes have won a good reputation at home and abroad.

Specifications of Structural Steel Pipe

Product:	Structural Seamless Pipe, Seamless Structural Pipe
Size:	OD: 114mm-914mm
	WT: 4mm-60mm
	LENGTH: 5.8/6/11.8/12m
Pipe Standard:	ASTM A53 ASTM A519 ASTM A500

Thickness Tolerance of Structural Steel Pipe

Nominal thickness	Tolerances on nominal thickness
> 5 < 8	-0.4	1.2
> 8 < 15	-0.5	1.4
> 15 < 25	-0.6	1.6
> 25 < 40	-0.8	1.9

Physical Properties of Structural Steel Pipe

Physical properties are the characteristics of matter that may be observed and measured. However, the measurement of a physical property may change the position of matter in a sample but not the structure of its molecules.
· Unit mass of steel: Density is the mass per unit volume. We require this property to find the dead load of the member. The density of steel is; ρ=7850kg/m3
· Modulus of elasticity: The Elastic Modulus is the measure of the stiffness of a material. The value of steel is; E=2.0×105N/mm2
· Poisson ratio: Poisson's ratio measures the deformation in the material in a direction perpendicular to the direction of the applied force. Poisson's ratio of steel is; μ=0.3
· Modulus of rigidity: The modulus of rigidity shows the beam's torsion capacity; i.e., the more rigidity, the more the torsion carrying capacity. The modulus of rigidity of steel is; G=0.769×105N/mm2.
· Coefficient of thermal expansion: This describes how the size of an object changes with a change in temperature. The coeff. of thermal expansion for steel is; α=12×106/∘C.

Tensile Strength of Structural Steel Pipe

	Grade A	Grade D
Tensile strength, mn, ps (MPa)	45 000 (310)	58 000 (400)
Yield strength, mn, psi (MPa)	39 000 (269)	36 000 (250)
Elongation in 2 in. (50.8 mm), min, %A	25B	23C

Minimum Tensile Properties

Lates	Quenched and tempered steel	90–100
	Welded or seamless pipe	30–35
Structural pipe and tubing	Welded or seamless tubing	33–50

Surface Treatment of Structural Steel Pipe

There are many surface treatment methods, each enhancing properties like durability and corrosion resistance. Below are some popular thermal surface treatment methods, which use controlled heating and cooling to improve material hardness, strength, and wear resistance.

Plasma Treatment

Uses plasma to clean, etch, or activate the surface, often enhancing adhesion and surface energy.

Laster Treatment

Uses laser energy to modify the surface, for hardening, melting, or adding textures.

Heat Treating

Alters the material's structure by heating, cooling, or both to improve hardness, strength, and wear resistance.

Flame Treatment

Exposes surfaces (typically polymers) to flame, enhancing adhesion properties for coatings or printing.

Usage of Structural Steel Pipe

Structural Usage

Structural use is commonly building and construction in which the building material is commonly referred to as steel tubes. Steel tubes are used to provide additional strength and stability for especially high buildings or constructions.
Another structural application of steel pipes is scaffolding poles which allow construction workers to access all areas of the building that are out of reach. They are made by linking steel tubes into each other as a cage that surrounds the building.

Manufacturing Usage

Steel pipes are being utilized for many different purposes in manufacturing use. Guard rails are one of the most common usages to provide a safety feature for stairs and balconies, or, in street, for cyclists and pedestrians. Steel pipes can also be utilized as security bollards which are used to cordon off an area from vehicle traffic to protect people, buildings, or infrastructures.

Transportation Usage

The most common usage of steel pipes is the transportation of products since the characteristics of the raw material is very suitable for long-term installations. More specialized applications to be used in the oil and gas industry may require more stringent specifications due to the hazardous nature of the product and the possibility of increasing pressure. These requirements bring a higher cost and quality control becomes more critical.

Other Services

Accepted delivery terms:	FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DDP, DDP, DDU, Express Delivery, DAF, DES.
Delivered Duty Paid:	DDP, DDU, Express Delivery, DAF, DES.
Accepted Payment Currencies:	USD, EUR, CAD, AUD, HKD, GBP, CNY.
Accepted Payment Methods:	T/T, L/C, D/P, D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Third Party Payment Escrow.

Certificate

FAQ

Q: What materials are commonly used to make large diameter structural steel pipes?

A: Common materials include carbon steel, such as ASTM A53 and A106 grades. High-strength low-alloy (HSLA) steels like ASTM A588 are also used for their better strength and corrosion resistance properties. In some special applications, stainless steel may be employed for its excellent corrosion resistance.

Q: What are the main manufacturing processes for structural steel pipes?

A: The seamless process involves piercing a solid billet and then rolling it to form the pipe, which provides a continuous and homogeneous structure. The welded process includes electric resistance welding (ERW) and submerged arc welding (SAW), where steel plates are rolled and welded along the seam to create the pipe.

Q: What are the applications of large diameter structural steel pipes?

A: In building construction, they can be used as columns and beams in high-rise buildings. For bridges, they are used in the construction of bridge piers, piles, and trusses. In offshore platforms, large diameter steel pipes are used for the legs and structural supports to withstand the harsh marine environment and heavy loads.

Q: How to choose structural steel pipes?

A: The selection depends on factors like the design load requirements, the span of the structure, and the environmental conditions. Engineers perform structural calculations based on the expected forces and stresses to determine the necessary diameter and wall thickness to ensure the pipe can safely carry the loads without excessive deformation or failure.

Q: What are the advantages of using structural steel pipes compared to other materials?

A: Steel pipes offer high strength-to-weight ratio, which means they can carry heavy loads while being relatively lightweight compared to some other materials like concrete. They are also highly durable, have good fire resistance when properly protected, and can be fabricated and installed relatively quickly, saving time and labor costs in construction projects.

Q: How does corrosion affect structural steel pipes and what are the prevention measures?

A: Prevention measures include applying anti-corrosion coatings such as zinc plating, epoxy coatings, or using cathodic protection systems. Regular inspection and maintenance to detect and address any signs of corrosion early are also crucial.

Q: What is the best surface finish for structural steel pipe?

A: · 1D finish – Hot Rolled. The 1D finish is our standard for hot rolled sections in stainless steel.
· 1D finish – Laser Welded. The 1D finish is the common finish for our laser-welded sections in stainless steel.
· 2H finish – Cold Drawn and Cold Rolled. The 2H finish is our standard for cold rolled or cold drawn stainless steel section, which is a smooth, matt or bright surface.

Hebei Huayang Steel Pipe Co., Ltd is one of the most professional structural steel pipe manufacturers and suppliers in China, providing high quality customized products with low price. We warmly welcome you to wholesale cheap structural steel pipe from our factory.

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