Steel Tubes For Structural Purposes

Name: China Customized Steel Tubes For Structural Purposes Suppliers, Manufacturers - Factory Direct Wholesale - YUANTAI
Brand: Yuantai
SKU: 241988841

Size: 20*20-500*500mm or as the requirement,
large size steel tube above 500*500 can be produced.
Thickness: 1.3-40mm or as the requirement
Length: 5.8m/6m/12m or as the requirement
1. All the pipes are high-frequency welded.
2. Both inner and outer welded stabs can be removed.
3. The pipe can be necked down and punched holes.
4. Supplying BV or SGS Inspection if the client needs it.

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Description

Products Specification:

Size	20201.0-50050016mm or as the requirement, large size steel tube above 500*500 can be produced.
Thickness	1.3-40mm or as the requirement
Length	5.8m/6m/12m or as the requirement
Steel grades	Q195,Q235,Q355,Q390,Q550,Q690,Q700 JIS G3466,STKR400,STRK490 ASTM A500,A501,CSA G40.21 50w Class C & Class H EN10219, EN10210,EN10025 We can also produce Indian brands, Chilean brands, Australian brands, and other brands.
Application	Steel Frame Glass Curtain Wall Heavy steel structure Aerospace engineering High-speed rail Shipbuilding Construction
Package	in the bundle, or wrapped with waterproof cloth as per the customers' requirement
Delivery Time	7-30 days
Loading Port	Xingang, Tianjin, China
MOQ	10 tons

Four characteristics of steel tubes for structural purposes:

As more and more construction projects adopt steel structures, large-sized thick-walled square tubes are widely used as steel components in truss structure systems and curtain wall support systems of airport terminals, stadiums, and exhibition centers due to their beautiful appearance, reasonable force, and relatively simple node processing. This type of square tube has the following four characteristics:

1. High strength

To reduce deadweight and improve safety performance such as earthquake and impact resistance, construction projects have begun to use high-strength steel widely, and the material strength limit has reached 630MPa or even higher. The steel tubes for structural purposes have a base material tensile strength of up to 630Mpa, ranking first in the world regarding product strength grade. The highest strength of products produced by Nippon Steel's production line in Japan is only 550Mpa, a difference of nearly 15%.

2. Fire-resistant

The room temperature mechanical properties of cold-bent large-sized thick-walled square tubes made of hot-rolled steel fully meet and exceed the requirements of Q345B, and its forming and processing performance is equivalent to or better than Q345B, and the yield strength ratio meets the requirements of the national construction industry specifications for earthquake resistance. At the same time, its high-temperature performance is significantly better than that of Q345B of the same level. When such steel components are used in indoor steel truss roofs, the process of fireproof and rust-proof coating can even be eliminated, which can not only reduce the amount of engineering and reduce the cost of engineering, but also give full play to the beautiful visual effect of the square and rectangular steel pipes, and have good comprehensive benefits.

3. Large specifications

The maximum specification of the square and rectangular steel pipe production line of the process institute is 500mm*500mm*19mm, which is the second in the world. The maximum specification of the 26-inch square and rectangular pipe production line of Nippon Steel, the world's first, is 550mm*550mm*22mm. The current maximum size of square and rectangular tubes in Europe and the United States is 400*400*12.7mm.

4. Tube wall thickness

The maximum thickness of square and rectangular tubes for construction is 19mm. The extra thickness is not only reflected in the absolute thickness but also in the relative thickness of the product. Thickness is an important indicator of the difficulty of cold bending forming, and the square tube is expressed by the edge thickness ratio. It is generally believed that when the edge thickness ratio is lower than 10, the product has a very high forming difficulty. The square and rectangular tubes produced by the process have a small cross-section and large wall thickness product with an edge thickness ratio of up to 7, such as 100mm*100mm*14mm, 120mm*120mm*16mm, etc.