Tenaris S.A., together with its subsidiaries, manufactures and distributes steel pipes for the energy industry and other industrial applications in North America, South America, Europe, the Middle East and Africa, and the Asia Pacific. The company offers steel casings to sustain the walls of oil and gas wells during and after drilling; steel tubing for conducting crude oil and natural gas to the surface after drilling has been completed; steel line pipes to transport crude oil and natural gas from wells to refineries, storage tanks and loading and distribution centers; and mechanical and structural pipes for the transportation of other forms of gas and liquids under high pressure. It also provides cold-drawn pipes for use in boilers, superheaters, condensers, heat exchangers, automobile production, and other industrial applications; premium joints and couplings for use in high temperature or high pressure environments under the TenarisHydril, Atlas Bradford, Ultra, and TORQ brands; coiled tubing is used for oil and gas drilling and well workovers and for subsea pipelines; and sucker rods used in oil extraction activities, tubes used for plumbing and construction applications, oilfield / hydraulic fracturing services, and coating services. In addition, the company engages in the development, management, and licensing of intellectual property. Tenaris S.A. was incorporated in 2001 and is based in Luxembourg City, Luxembourg. Tenaris S.A. operates as a subsidiary of Techint Holdings S.à r.l.

Mueller Industries, Inc. manufactures and sells copper, brass, aluminum, and plastic products in the United States, the United Kingdom, Canada, South Korea, the Middle East, China, and Mexico. It operates through three segments: Piping Systems, Industrial Metals, and Climate. The Piping Systems segment offers copper tubes, fittings, line sets, and pipe nipples. It also resells steel pipes, brass and plastic plumbing valves, malleable iron fittings and faucets, and plumbing specialties; and supplies water tubes. This segment sells its products to wholesalers in the plumbing and refrigeration markets, distributors to the manufactured housing and recreational vehicle industries, building material retailers, and air-conditioning original equipment manufacturers (OEMs). The Industrial Metals segment manufactures brass, bronze, and copper alloy rods; plumbing brass, valves, fittings, and gas assemblies; cold-form aluminum and copper products; machining of aluminum, steel, brass, and cast iron impacts and castings; brass and aluminum forgings; brass, aluminum, and stainless-steel valves; fluid control solutions; and gas train assembles to OEMs in the industrial, construction, HVAC, plumbing, and refrigeration markets. The Climate segment offers valves, protection devices, and brass fittings for various OEMs in the commercial HVAC and refrigeration markets; high-pressure components and accessories for the air-conditioning and refrigeration markets; coaxial heat exchangers and twisted tubes for the HVAC, geothermal, refrigeration, swimming pool heat pump, marine, ice machine, commercial boiler, and heat reclamation markets; and insulated HVAC flexible duct systems. Mueller Industries, Inc. was founded in 1917 and is headquartered in Collierville, Tennessee.

Teleflex Incorporated designs, develops, manufactures, and supplies single-use medical devices for common diagnostic and therapeutic procedures in critical care and surgical applications worldwide. The company provides vascular access products that comprise Arrow branded catheters, catheter navigation and tip positioning systems, and intraosseous access systems for the administration of intravenous therapies, the measurement of blood pressure, and the withdrawal of blood samples through a single puncture site. It also offers interventional products, which consists of various coronary catheters, structural heart support devices, and peripheral intervention and mechanical circulatory support platform that are used by interventional cardiologists and radiologists, and vascular surgeons; and Arrow branded pumps and catheters, Guideline, Turnpike, and Trapliner catheters, the Manta Vascular Closure, and Arrow Oncontrol devices. The company provides anesthesia products, such as airway and pain management products to support hospital, emergency medicine, and military channels; and surgical products, including metal and polymer ligation clips, and fascial closure surgical systems that are used in laparoscopic surgical procedures, percutaneous surgical systems, and other surgical instruments. It also offers interventional urology products comprising the UroLift System, an invasive technology for treating lower urinary tract symptoms due to benign prostatic hyperplasia; respiratory products, including oxygen and aerosol therapies, spirometry, and ventilation management products for use in various care settings; urology products, such as catheters, urine collectors, and catheterization accessories and products for operative endourology; and bladder management services. The company serves hospitals and healthcare providers, medical device manufacturers, and home care markets. Teleflex Incorporated was incorporated in 1943 and is headquartered in Wayne, Pennsylvania.

Otter Tail Corporation, together with its subsidiaries, engages in electric utility, manufacturing, and plastic pipe businesses in the United States. It operates through three segments: Electric, Manufacturing, and Plastics. The Electric segment produces, transmits, distributes, and sells electric energy in Minnesota, North Dakota, and South Dakota; and operates as a participant in the Midcontinent Independent System Operator markets. This segment generates electricity through coal, fuel oil, solar, wind, and natural gas. It serves approximately residential, commercial, and industrial customers. The Manufacturing segment engages in the contract machining, metal parts stamping, fabrication and painting, production of plastic thermoformed horticultural containers, life science and industrial packaging, and material handling components and extruded raw material stock for the recreational vehicle, lawn and garden, agricultural, construction, and industrial and energy equipment end markets. The Plastics segment manufactures polyvinyl chloride pipes for municipal water, rural water, wastewater, storm drainage and water reclamation system, and other uses for customers in the horticulture, medical and life sciences, industrial, recreation, and electronics industries. This segment markets its products to wholesalers and distributors through independent sales representatives, company salespersons, and customer service representatives. The company was formerly known as Otter Tail Power Company and changed its name to Otter Tail Corporation in 2001. Otter Tail Corporation was founded in 1907 and is headquartered in Fergus Falls, Minnesota.

MRC Global Inc., through its subsidiaries, distributes pipes, valves, fittings, and other infrastructure products and services in the United States, Canada, and internationally. It offers ball, butterfly, gate, globe, check, diaphragm, needle, and plug valves; other products, such as lined corrosion resistant piping systems, control valves, valve automation, and top work components; and valve modification services, including valve control extensions, welding, hydrotesting, painting, coating, x-raying, and actuation assembly. The company also provides carbon steel fittings and flanges comprising carbon weld fittings, flanges, and piping components; stainless steel, alloy and corrosion resistant pipes, tubing, fittings, and flanges; and carbon line pipes. In addition, it offers natural gas distribution products, including risers, meters, polyethylene pipes and fittings, and various other components and industrial supplies; oilfield and industrial supplies and completion equipment, such as high density polyethylene pipes, fittings, and rods; and specialized production equipment comprising tanks and separators. Further, the company provides various services under the ValidTorque and FastTrack names. Its products are used in the construction, maintenance, repair, and overhaul of equipment used in extreme operating conditions, including high pressure, high/low temperature, and high corrosive and abrasive environments. The company was formerly known as McJunkin Red Man Holding Corporation and changed its name to MRC Global Inc. in January 2012. MRC Global Inc. was founded in 1921 and is headquartered in Houston, Texas.

Ascent Industries Co. an industrials company, produces and distributes stainless steel pipe and tube and specialty chemicals in the United States and internationally. The company operates through two segments, Tubular Products and Specialty Chemicals. It manufactures welded pipes and tubes, primarily from stainless steel, duplex, and nickel alloys; and ornamental stainless steel tubes for automotive, commercial transportation, marine, food services, construction, furniture, healthcare, and other industries. The company also produces defoamers, surfactants, and lubricating agents for end users, including companies that supply agrochemical paper, metal working, coatings, water treatment, paint, mining, oil and gas, and janitorial and other applications. In addition, it provides contract manufacturing services, as well as operates as a multi-purpose plant to process various difficult to handle materials, including flammable solvents, viscous liquids, and granular solids. The company was formerly known as Synalloy Corporation and changed its name to Ascent Industries Co. in August 2022. Ascent Industries Co. was founded in 1945 and is headquartered in Schaumburg, Illinois.

Perma-Pipe International Holdings, Inc., together with its subsidiaries, engineers, designs, manufactures, and sells specialty piping and leak detection systems. It offers insulated and jacketed district heating and cooling piping systems for energy distribution from central energy plants to various locations; and primary and secondary containment piping systems for transporting chemicals, hazardous fluids, and petroleum products, as well as engages in the coating and insulation of oil and gas gathering and transmission pipelines. The company also offers liquid and powder based anti-corrosion coatings for external and internal surfaces of steel pipe, including shapes like bends, reducers, tees, and other spools/fittings that is used in pipelines for the transportation of oil and gas products and potable water. It has operations in the United States, Canada, the Middle East, North Africa, Europe, India, and internationally. The company was formerly known as MFRI, Inc. and changed its name to Perma-Pipe International Holdings, Inc. in March 2017. Perma-Pipe International Holdings, Inc. was incorporated in 1993 and is headquartered in Spring, Texas.

Alpha Pro Tech, Ltd., together with its subsidiaries, develops, manufactures, and markets a range of disposable protective apparel, infection control, and building supply products in the United States and internationally. The company operates through Disposable Protective Apparel and Building Supply segments. The Disposable Protective Apparel segment provides shoe covers, bouffant caps, coveralls, frocks, lab coats, and gowns, hoods, as well as face masks and shields. The Building Supply segment offers construction weatherization products, such as housewrap and housewrap accessories, including window and door flashing, and seam tape, synthetic roof underlayment, and self-adhered roof underlayment, as well as other woven material. The company markets its products under the Alpha Pro Tech brand name, as well as under private labels. Its products are used primarily in cleanrooms; industrial safety manufacturing environments; health care facilities, such as hospitals, laboratories, and dental offices; building and re-roofing sites. The company distributes its products through a network of purchasing groups, distributors, and independent sales representatives, as well as through its sales and marketing force. Alpha Pro Tech, Ltd. was founded in 1983 and is headquartered in Markham, Canada.