ASTM A501 Pipe and Tube

ASTM A501 pipe detail

Shape:round square rectangular shaped
Dimensions:  Customizable
Square:10*10-1200*1200mm 
Rectangular:10*15-800*1200mm
Round:10.3-2000mm
W.T.: 0.5-60mm 
Length:0.5-26.5m or custmized
Grade：Gr.A,Gr.B,Gr.C,etc
Standard：ASTM A501
Surface Treatment：Bare,oil,painted,galvanized,etc.
MOQ:2-5 Tons
Capacity: 5 million tons / year
Packaging:PVC package or follow your needs
Port of origin:Tianjin Port
Payment：TT/LC,etc

ASTM A501 Pipe Benifit

1. High international recognition: ASTM A501 is a standard developed by the American Society for Testing and Materials (ASTM), with internationally recognized authority and credibility. Products conforming to this standard are more likely to be recognized in the international market, thus improving the market competitiveness of the products.
2. Strict quality control: ASTM A501 standard for pipe and fittings used in the materials, chemical composition, mechanical properties and other aspects are specified in detail. This helps to ensure the quality and performance of products and reduce quality fluctuations in the production process.

ASTM A501 Tube Properties

3. Promote international trade: Since ASTM A501 is an internationally recognized standard, products conforming to this standard are more likely to enter the international market, thus promoting the development of international trade.
4. Diversification of size specifications: ASTM A501 standard covers a wide range of shapes (such as square, round, rectangular or special shapes) and sizes (such as 1 to 10 inches of square and rectangular pipe, NPS 1/2 to NPS 24 round pipe) of steel pipe, to meet the needs of different applications.
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ASTM A501 Tube Properties

5. Material diversity: ASTM A501 standard allows the use of carbon steel, alloy steel, stainless steel and other materials, making the steel pipe has a wide range of applicability.
6. High structural strength: ASTM A501 steel pipe has high mechanical properties and structural strength, which can meet the needs of a variety of structural applications.
7. Thermoforming process: ASTM A501 steel pipe is manufactured by thermoforming process, which has better formability and workability.
8. Diversity of surface treatments: In addition to the basic black steel pipe, ASTM A501 also allows for surface treatments such as hot dip galvanizing of steel pipe to improve its corrosion resistance and service life.

Building And Bridge Structures

ASTM A501 steel pipe is commonly used in welded, riveted or bolted structures for bridges and buildings. Due to its high strength and good weldability, it ensures the stability and safety of buildings and bridges.

Piping System

Although the ASTM A501 standard is primarily for structural pipe, it is sometimes used as an integral part of piping systems due to its excellent mechanical properties and corrosion resistance, especially where it is required to withstand higher pressures and stresses.

Automobile Manufacturing Industry

Mechanical parts manufacturing:
The high strength and good workability of ASTM A501 steel tubing make it an ideal material for the manufacture of a wide variety of mechanical parts. These parts may include shafts, bearing housings, gears, couplings, and more.
The precise size and shape of the steel pipe ensures the accuracy and reliability of the mechanical parts, thus improving the performance of the entire mechanical system.
Equipment frames and support structures:
In machine building, equipment frames and support structures are critical to the stability and safety of the equipment. the strength and rigidity of ASTM A501 steel tubing makes it ideal for fabricating these structures.
The excellent welded and bolted properties of steel tubing make it easy to build strong, durable equipment frames and support structures.

Mechanical Manufacturing

Transmission and Hydraulic Systems:
In some mechanical equipment, steel tubing is used as piping for transmission and hydraulic systems.The pressure and corrosion resistance of ASTM A501 steel tubing ensures the stability and reliability of these systems under severe operating conditions.
The smooth interior and precise dimensions of steel tubing help reduce fluid resistance and pressure loss, increasing system efficiency.

Special Machinery Manufacturing:
For some special mechanical equipment, such as cranes and excavators, ASTM A501 steel pipe is also used as an important component. Its excellent mechanical properties and durability can meet the needs of these equipment in complex working conditions.

Manufacturing Process

When it comes to the manufacturing process for ASTM A501 steel pipe, it varies depending on the type of pipe. The following is a brief overview of the manufacturing process for four product types: ERW pipe, LSAW pipe, SSAW pipe, and seamless pipe:

ERW pipe (resistance welded pipe)
Slitting: The steel plate is cut to the required width.
Unwinding: Unwinding the steel plate for subsequent processing.
Strip leveling: leveling the uncoiled strip to ensure its flatness.
Head and Tail Cutting: Cutting the head and tail of the strip to remove irregularities or undesirable parts.
Strip Butt Welding: Butt welding of the treated strip to form a long steel pipe.
Forming: Bending the welded length of steel pipe into tube shape by forming machinery.
Welding: Resistance welding is performed at the seams of the formed tube to form a complete tube.
Subsequent processing: including burr removal, sizing, flaw detection and testing to ensure the quality of the steel pipe.
LSAW pipe (straight seam submerged arc welded pipe)
Plate Detection: Full-plate ultrasonic inspection of steel plates to ensure the quality of raw materials.
Edge milling: milling the edge of steel plate by edge milling machine to meet the processing requirements.
Pre-bending edge: pre-bending the edge of the plate by pre-bending machine to prepare for molding.
Forming: The pre-bent steel plate is formed into a tube.
Welding: Welding of the formed steel pipe by submerged arc welding process.
Subsequent processing: including weld seam inspection, steel pipe straightening, etc.

SSAW Pipe (Spiral Submerged Arc Welded Pipe)
Leveling, trimming and edge planing: pre-treat the strip to meet the molding requirements.
Surface cleaning and pre-bending of edges: clean the surface of strip steel and pre-bend it.
Forming: Rolling the strip steel into spiral shape and welding at the same time.
Welding: Welding is carried out by submerged arc welding process.
Subsequent Processing: Including weld seam inspection, pipe cutting, etc.
Seamless Pipe
Raw material preparation: select high quality steel billet as raw material.
Hot Rolling Processing: Heat the billet to the appropriate temperature, hot rolling process through the rolling machinery to form the pipe shape.
Billet processing: the hot rolled billet is acid or alkaline washed to remove surface oxides and dirt.
Cold Drawing Processing: Cold draw the billet to make its wall thickness more uniform and improve the mechanical properties.
Heat treatment: Heat treatment is carried out on the cold-drawn seamless pipe to improve its mechanical properties and corrosion resistance.
Trimming and inspection: Trimming and inspection of the heat-treated seamless pipe to ensure that its quality meets the standard.


The different types of ASTM A501 steel tubing are unique in their manufacturing processes, but all generally include the critical steps of raw material preparation, forming, welding (hot rolling) and subsequent heat treatment. These steps ensure the quality and performance of the pipe for a variety of applications.