ASTM A234 WPB is a standard specification for carbon steel and alloy steel pipe fittings of seamless and welded construction. These fittings are intended for use in pressure piping and pressure vessel fabrication at moderate to high temperatures. The "WPB" in ASTM A234 WPB stands for "wrought pipe fitting, butt-welded," indicating that these fittings are primarily designed to be welded to pipes. The ASTM A234 WPB fittings are manufactured through a process that involves forming and shaping carbon steel or alloy steel plates, sheets, or pipes into desired shapes. These fittings are then machined to meet specific dimensions and tolerances as per the ASTM A234 standard. The fittings come in various shapes and sizes such as elbows, tees, reducers, caps, and more, catering to different requirements in pipeline systems.
One of the key characteristics of ASTM A234 WPB fittings is their ability to withstand high temperatures and pressures. This makes them suitable for applications in industries such as oil and gas, petrochemicals, power generation, and more. The fittings are commonly used to change the direction or flow of fluids in pipelines and to connect different pipe sections together. When it comes to material composition, ASTM A234 WPB fittings are made from carbon steel or alloy steel that conforms to the chemical composition and mechanical properties specified by the ASTM A106, A53, or other relevant standards. This ensures that the fittings have the required strength, toughness, and corrosion resistance for their intended applications.
The manufacturing process for ASTM A234 WPB fittings includes heat treatment, which is carried out to achieve the desired mechanical properties. After forming and shaping, the fittings undergo processes such as solution annealing or quenching and tempering, depending on the material grade and type. In summary, ASTM A234 WPB fittings play a crucial role in various industries by providing a reliable means to connect and control pipelines. Their adherence to the ASTM A234 standard ensures their quality, performance, and compatibility with carbon and alloy steel pipes. Whether for high-temperature or high-pressure applications, these fittings are designed to maintain structural integrity and fluid flow, contributing to the efficiency and safety of industrial systems.
Specification | Description |
Standard | ASTM A234/A234M |
Material | Carbon Steel and Alloy Steel |
Type | Seamless and Welded |
Grade | WPB |
Manufacturing | Forming, shaping, machining, heat treatment |
Applications | Pressure piping and pressure vessel fabrication |
Temperature | Moderate to high temperatures |
Pressure | Suitable for various pressure levels |
Shapes | Elbows, tees, reducers, caps, and more |
Connection | Butt-welded |
Industries | Oil and gas, petrochemicals, power generation, etc. |
Material Grade | Conforms to ASTM A106, A53, or other relevant standards |
Mechanical Prop. | Strength, toughness, corrosion resistance |
Heat Treatment | Solution annealing, quenching and tempering, as needed |
Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
Percentage (%) | 0.30-0.35 | 0.60-1.05 | 0.035 | 0.040 | 0.15-0.40 |
Property | Tensile Strength | Yield Strength | Elongation | Hardness |
Minimum Value | 415 MPa (60,000 psi) | 240 MPa (35,000 psi) | 22% | - |
Maximum Value | 585 MPa (85,000 psi) | - | - | 197 HBW (*) |
Pharmaceutical Equipment | Chemical Equipment |
Sea Water Equipment | Heat Exchangers |
Heat Exchangers | Gas Processing |
Condensers | Specialty Chemicals |
Pulp and Paper Industry | Pharmaceuticals |
Exporting Steel Pipes & Tubes to over 60 countries including Afghanistan, Albania, Andorra, Angloa, Austria, Australia, Bahrain, Bangladesh, Bhutan, Brazil, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Canada, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Madagascar, Mexico, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, New Zealand, North Korea, Netherlands, Norway, Nigeria, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Sudan, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Venezuela, Vietnam, Yemen, etc.