Carbon Steel Buttweld Fittings

About Carbon Steel A234 WPB Pipe Fittings

A234 WPB (ASTM A234 Grade WPB) refers to a specific grade of carbon steel pipe fittings that are designed for use in moderate and high-temperature service. These fittings are commonly used to connect or join sections of pipes in various industrial applications. The primary material used in A234 WPB fittings is carbon steel. Carbon steel contains mainly iron and carbon, and it may also contain small amounts of other elements such as manganese, silicon, sulfur, and phosphorus.

A234 WPB fittings are manufactured in compliance with the ASTM A234/A234M standard. A234 WPB fittings are well-suited for welding processes, including both butt welding and socket welding. A234 WPB fittings undergo various quality control measures and testing procedures to ensure their compliance with the specified standards.

About ASTM A420 Carbon Steel Pipe Fittings

ASTM A420 is a specification that covers low-temperature carbon steel pipe fittings for use in pressure piping and pressure vessel service at low temperatures. These fittings are specifically designed to work in environments where the temperature goes down to -20°F (-29°C) and even lower.

ASTM A420 Fittings are made from carbon steel, but they are specifically designed to withstand low temperatures. The ASTM A420 includes several grades (WPL6, WPL9) and classes (Class 1, Class 2, Class 3) to indicate different levels of impact testing and toughness requirements. The choice of grade and class depends on the specific low-temperature service conditions.

ASTM A420 WPL6 is a low-temperature carbon steel grade with specific chemical composition adjustments to ensure enhanced toughness in low-temperature environments. WPL6 fittings are further classified into three classes based on impact testing requirements:

ASTM A420 WPL3 is a low-temperature carbon steel grade with specific chemical composition adjustments for enhanced toughness. Intended for use in low-temperature applications similar to WPL6. WPL3 fittings are also classified into three classes based on impact testing and toughness.

ASTM A420 WPL9 is another low-temperature carbon steel grade, similar to WPL6 and WPL3, but with different chemical composition adjustments to meet specific low-temperature service requirements. WPL9 fittings have three classes based on impact testing and toughness requirements.

About ASTM A860 Carbon Steel Pipe Fittings

ASTM A860 is a specification that covers wrought high-strength ferritic steel butt-welding pipe fittings for use in high-pressure and high-temperature service. These fittings are designed for applications in industries such as oil and gas, power generation, and petrochemical, where the requirements for high strength and toughness are essential.

A860 fittings are made from high-strength ferritic steel, specifically designed to withstand high pressures and temperatures. The material typically includes elements such as carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, and vanadium.

ASTM A860 specifies different strength levels for the fittings, categorized as WPHY 42, WPHY 46, WPHY 52, WPHY 60, WPHY 65, and WPHY 70. These numbers represent the minimum yield strength in ksi (kilo-pounds per square inch) of the material.

1. A860 WPHY 42 Fittings: Minimum Yield Strength: 42,000 psi (290 MPa). It is Suitable for moderate-strength applications.

2. A860 WPHY 46 Fittings: Minimum Yield Strength: 46,000 psi (315 MPa). It is Designed for applications requiring higher strength compared to WPHY 42.

3. A860 WPHY 52 Fittings: Minimum Yield Strength: 52,000 psi (360 MPa). Offers higher strength than WPHY 46, suitable for more demanding applications.

4. A860 gr. wphy 60 Fittings: Minimum Yield Strength: 60,000 psi (415 MPa). A higher-strength grade suitable for applications with elevated pressure and temperature requirements.

5. A860 WPHY 65 Fittings: Minimum Yield Strength: 65,000 psi (450 MPa). it is Designed for high-strength applications, offering increased resistance to pressure and temperature.

6. A860 WPHY 70 Fittings: Minimum Yield Strength: 70,000 psi (485 MPa). The highest-strength grade within the WPHY series, suitable for the most demanding high-pressure and high-temperature applications.

Types of Carbon Steel Buttweld Fittings

Check ANSI B16.28 / ASME B16.9 Buttweld Pipe Fittings Dimensions Download

Chemical and Mechanical Composition of Carbon Steel Buttweld Fittings