ASTM A178 ERW Electric Resistance Round Welded Carbon Steel Tube For Construction Boiler

ASTM A178 Welded Pipes ERW Electric Resistance Round Carbon Steel Tube For Construction Boiler

Introduction

ASTM A178 is a specification for electric resistance welded carbon steel tubes that are used for high-temperature service, mainly in construction boilers. These welded pipes are manufactured using a process called electric resistance welding (ERW), which involves heating the edges of the steel strip and joining them together under pressure.

Material and Specification

ASTM A178 welded pipes are made from carbon steel, providing excellent strength and durability. The specification covers tubes with various dimensions and thicknesses, ensuring suitability for different boiler applications. The standard specifies that these tubes should be cold-formed and subjected to heat treatment after welding to achieve the necessary mechanical properties and structural integrity.

Key Features

• Electric resistance welding process ensures strong and reliable joints.
• High-temperature resistance makes them suitable for boiler construction.
• Superior strength and durability.
• Cold-formed tubes with precise dimensions for easy installation.
• Heat-treated after welding for optimized mechanical properties.

Chemical Composition

Mechanical Properties

Steel Grade

ASTM A178 welded pipes are available in different steel grades, including Grade A, Grade C, and Grade D. These grades are defined based on the chemical composition and mechanical properties of the tubes.

Application

The primary application of ASTM A178 welded pipes is in construction boilers, where they serve as heat exchanger tubes. These tubes efficiently transfer heat from the combustion process to the water or steam, ensuring optimum boiler performance. They are also used in various industrial applications where high-temperature resistance and durability are crucial.

Possible Alternative Grades

While ASTM A178 tubes are specifically designed for construction boilers, there are alternative grades that can be used depending on specific requirements. Some possible alternatives include ASTM A179, ASTM A192, and ASTM A210 tubes. These grades offer similar properties and can be suitable replacements based on the application and operating conditions.

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Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

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