
Flanges
- Weld Neck, Slip-On, Blind & more types
- Sizes from ½" to 72" available
- ASME B16.5 & B16.47 certified standards
Steel A105 Class 150 Flanges support pipeline applications, industrial piping systems, hydrostatic testing, petrochemical projects, construction, welding, and maintenance. Available flange types, material options, ASME B16 series standards, and purchase or rental solutions help teams manage routine and critical projects with reliable component access.


A105 identifies the ASTM material specification for forged carbon steel piping components, including flanges. It describes the material grade and relevant manufacturing requirements; it does not identify the flange pressure class or connection style. For a complete selection, confirm the required Class 150 rating, flange type, dimensions, facing, and applicable project standards.
Talk to our experts for custom solutions and tailored guidance.

Flanges support pipeline connections, fabrication, repairs, and component integration across construction and maintenance activities.

Class 150 flanges connect and isolate piping components in industrial systems requiring specified standards and configurations.

Flanges help create temporary test connections and isolation points for hydrostatic testing activities.

Flanges support piping installation, maintenance, fabrication, and isolation work across petrochemical project environments.
Talk to our experts for custom solutions and tailored guidance.
Access multiple flange types, material options, pressure classes, and API ratings for varied industrial piping and testing requirements.
Choose purchase or rental solutions for flanges and related components, helping maintenance, testing, and construction teams control project needs.
Since 1977, Twinco Industrial has supported petrochemical, pipeline, construction, testing, maintenance, and related industrial projects.
Share your flange requirements with Twinco Industrial and receive product guidance, availability information, and a quote for purchase or rental options.
For immediate assistance, feel free to give us a direct call at +1 713-733-8946. You can also send us a quick email at info@twincoindustrial.com.
For immediate assistance, feel free to give us a direct call at +1 713-733-8946. You can also send us a quick email at info@twincoindustrial.com.