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hot galvanized square pipe ASTM A 500 B (OR) S275 JR Square Hollow Sections
hot galvanized square pipe ASTM A 500 B (OR) S275 JR Square Hollow Sections






Detail Information
hot galvanized square pipe ASTM A 500 B (OR) S275 JR Square Hollow Sections
Chemical composition and thermal analysis
Element |
Composition, %
|
||||
GradesA, B,and D | Grade C | ||||
Heat Analysis | Product Analysis | Heat Analysis | Product Analysis | ||
Carbon, maxA | 碳,最大值 | 0.26 | 0.30 | 0.23 | 0.27 |
Manganese, maxA | 锰,最大值 | 1.35 | 1.40 | 1.35 | 1.40 |
Phosphorus, max | 磷,最大值 |
0.035
|
0.045
|
0.035
|
0.045
|
Sulfur, max | 硫,最大值 |
0.035
|
0.045
|
0.035
|
0.045
|
Copper, minB | 铜,最大值 |
0.20
|
0.18
|
0.20
|
0.18
|
Processing
Hot galvanized
Manufacturing process
Welding pipe manufacturing process and Seamless Pipe Manufacturing Process


Tensile requirements
TABLE 2 Tensile Requirements

Flattening test
The flattening test is required for circular structural pipes, and is not required for other shaped structural pipes.
For circular welded pipes, the specimen must be at least 4 inches (100 millimeters) cold flattened between two parallel plates in three steps, with the weld seam at 90 ° to the direction of force.
The first step is a ductility test of the weld seam, with no cracks or fractures on the inner and outer surfaces of the sample until the distance between the two plates is less than two-thirds of the outer diameter of the pipe.
The second step is to ensure that there are no cracks or fractures on the inner and outer surfaces of the base material until the distance between the two plates is less than half of the outer diameter of the pipe, unless otherwise specified.
The third step is stability testing, and the flattening behavior continues until the sample breaks or the relative pipe wall of the sample comes into contact. Thin, insufficiently sturdy raw materials or incomplete welding will be shown throughout the flattening test, which will serve as evidence of product failure.
For seamless circular structural pipes with an outer diameter of 23/8 inches (60 millimeters) and above, the sample length should not be less than 21/2 inches (65 millimeters) and should be cold flattened between two parallel plates in two steps.
The first step is the ductility test, where there are no cracks or fractures on the inner and outer surfaces, except as specified in 10.5, until the distance between the two plates is less than the H value. The calculation formula is as follows: H=(1+e) t (e+t/D) (1), H=distance between the pressure plates, inches (millimeters), e=deformation per unit length (fixed values according to steel grade, A grade 0.09, B grade 0.07, C grade 0.06), t=specified wall thickness, inches (millimeters), E=deformation per unit length (with fixed values according to steel grade, A grade 0.09, B grade 0.07, C grade 0.06), t=specified wall thickness, inches (millimeters), D=specified pipe outer diameter, inches (millimeters)
The second step is stability testing, where the flattening behavior continues until the sample breaks or the relative pipe wall of the sample comes into contact. Thin, insufficiently sturdy raw materials or incomplete welding will be shown throughout the flattening test, which will serve as evidence of product failure.
Length tolerance
TABLE 4 Length Tolerances for Specific Lengths of Structural Tubing

Permissible Variations in Twist for Square and Rectangular Structural Tubing

Product details of hot galvanized square pipe ASTM A 500 B (OR) S275 JR Square Hollow Sections

The pipe orifice is flat and free of burrs

Uniform galvanizing of the pipe surface

Uniform wall thickness of steel pipes with high accuracy

Complete specifications, large stock of steel pipes in stock

The inner and outer walls of the steel pipe are smooth and flat

Steel pipes are delivered quickly in their own transportation fleet, ensuring delivery time
Steel tube samples of Yuantai Derun
Application

BRIDGE CONSTRUCTION
Hong Kong-Zhuhai-Macao Bridge,Our products are involved in the construction of bridges. It is a bridge and tunnel project connecting Hong Kong, Zhuhai, Guangdong and Macao in China.

BUILDING CONSTRUCTION
SINGAPORE GOOGLE BUILDING,From 2018 to 2019, we provided steel pipes with hollow section profiles for the construction of Google building in Singapore
Why choose Yuantai Derun?
- 1. 100% after-sales quality and quantity assurance.
- 2. Professional sales manager quickly reply within 24 hours.
- 3. Large Stock for regular sizes.
- 4. Free sample 20cm high quality.
- 5. Strong produce capability and capital flow.
- 6.Small order accepted.
- 7.Brand name raw material
- 8.Support OEM or ODM
- 9.20 years Manufacturing experience
- 10. It can manufacture steel pipes of different projects and standards in the world
- 11.Yuantai has a standing stock of more than 200000 tons, and the annual shipment specification is:
- 10*10*0.5—1200*1200*60mm, ASTM A500B S275JR hot dip square hollow section
- 10*15*0.5—800*1200*60mm,ASTM A500B S275JR hot dip rectangular hollow section
- Φ 10.3— Φ 3620mm,ASTM A500B S275JR hot dip circular hollow section
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Please send your message to us
Yuantai team has over 21 years of experience in steel pipe project applications, specializing in the production, manufacturing, and customization of square rectangular, and circular steel pipes. Warmly welcome project procurement managers, individual owners, designers, and overall sellers, etc. Write down your requirements and receive professional quotes and technical support.
- Name
- Tel
- *Title
- *Content