ASTM A572 High Strength Low Alloy Structural Steel Tube for Machinery Manufacturing

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Product Description

Basic Specifications
Model NO.
A572 Grade 42 A572 Grade 50 55 60 65
Composition
Carbon Phosphorus Chromium Molybdenum
Technique
Hot Rolled
Shape
Round
Surface Treatment
Polished
Special Use
for Machinery Manufacturing
Alloy or Not
Alloy
Spot Size
6'' to 30''
Thickness
Sch 10 to Sch Xxs
Delivery Time
8-14 Days
HS Code
7304511001
Capacity
300,000 tons/Year
Product Overview

ASTM A572 standard includes five different grades of steel: A572-42, A572-50, A572-55, A572-60, and A572-65. These grades represent the minimum yield strength and tensile strength requirements essential for structural applications.

ASTM A572 is a high-strength, low-alloy steel grade widely used in bridges, buildings, and machinery. With a minimum yield strength of 50 ksi for the common Grade 50, it offers excellent durability and weldability.

Different grades meet the strength requirements of various engineering projects. A572-42 indicates a minimum yield strength of 42 ksi, while A572-50 represents 50 ksi, moving up to A572-65 with a yield strength of 65 ksi. The selection depends on the specific performance requirements of the machinery or construction project.

Product Gallery
ASTM A572 Structural Steel Tube
Steel Tube Detail 1
Steel Tube Detail 2
Steel Tube Detail 3
Technical Parameters
Product NameAlloy Structural Steel Tube
StandardASTM A106/A53, ASTM A519, JIS, DIN 2391, EN10305, SA335, etc.
Material40Cr, 45#, 20#, 1045, 4130, 4140, 16Mn, 42CrMO, etc.
Outer Diameter25 - 545 mm
Wall Thickness2.5 - 120 mm
TechnologyHot Rolled / Hot Expanded / Cold Drawn
ApplicationStructure pipe, Boiler tube, Liquid delivery, Petroleum cracking
Chemical Composition (Grade 50)
Grade C (max.%) Mn (max.%) P (max.%) S (max.%)
50 [345] 0.23 1.35D 0.04 0.05
Mechanical Strength (Grade 50)
Material Properties Yield Point min [MPa] Tensile Strength min [MPa] Elongation %
A572 Gr 50 345 450 65 (ksi) / 18-21%
Production & Quality
Factory Overview
Workshop 1
Workshop 2
Quality Control 1
Quality Control 2
Quality Control 3
Certifications
Certification 1
Certification 2
Frequently Asked Questions
What are the primary advantages of ASTM A572 Grade 50 steel?
ASTM A572 Grade 50 is a high-strength, low-alloy (HSLA) structural steel that offers a superior strength-to-weight ratio compared to standard carbon steel. It provides excellent weldability, formability, and durability, making it ideal for heavy-duty structural applications.
What industries commonly use A572 alloy steel tubes?
These tubes are widely used in construction, bridge building, machinery manufacturing, and the energy sector (oil and gas). They are specifically suited for structural components that require high load-bearing capacity and resistance to environmental stress.
Can the steel tubes be customized to specific dimensions?
Yes, we support a wide range of customizations. Outer diameters range from 25mm to 545mm, with wall thicknesses from 2.5mm to 120mm. Special cut lengths and non-standard specifications for ultra-thick walls or ultra-long tubes are also available.
How is the quality of the seamless steel pipes ensured?
Quality is maintained through a rigorous inspection process including 2-hour interval quality checks during production, entrance inspection of raw materials, and comprehensive exit inspections. All products follow standardized process cards and work orders.
What other types of steel products are available?
The product range includes seamless carbon steel pipes, welded structural pipes, alloy steel pipes for high-pressure boilers, oil and gas transportation pipes, and hydraulic support pipes for mining and mechanical equipment.
What are the typical lead times for international orders?
Standard delivery times range from 8 to 14 days, depending on the order volume and customization requirements. All products are shipped with standard sea-worthy packing to ensure safe transport.

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