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2. Harbor Freight Tools - Wikipedia

   en.wikipedia.org/wiki/Harbor_Freight_Tools

   Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]

3. Semi-trailer - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer

   The combination of a semi-trailer and a tractor truck is called a semi-trailer truck (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). [1] A large proportion of a semi-trailer's weight is supported by a tractor unit, or a detachable front-axle assembly known as a dolly, or the tail of another trailer ...

4. Wabash National - Wikipedia

   en.wikipedia.org/wiki/Wabash_National

   Wabash National is an American diversified industrial manufacturing company and North America's largest producer of semi trailers and liquid transportation systems. The company specializes in the design and production of dry freight vans, refrigerated vans , platform trailers, liquid tank trailers, intermodal equipment, engineered products and ...

5. Semi-trailer truck - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_truck

   Conventional style cab tractor A cab-over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (also known by a wide variety of other terms – see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel. Other terms There are a ...

6. Pipe support - Wikipedia

   en.wikipedia.org/wiki/Pipe_support

   The critical component in both the type of supports are helical coil compression springs. Spring hanger & supports usually use helical coil compression springs. 1.Variable spring hanger or variable effort support: Variable spring hanger. Variable effort supports also known as variable hangers or variables are used to support pipe lines ...

7. Glossary of the American trucking industry - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_the_American...

   Often a straight truck, semi-trailers are also common. Flatbeds and refuse container trucks can often "dump", but are rarely called that. [3] Eighteen-wheeler This term is derived from the number of tires that the typical OTR tractor-trailer configuration has. See also semi-truck. Semi-truck

8. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin , a 2-or- 3 + 1 ⁄ 2 -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a ...

9. Spring (device) - Wikipedia

   en.wikipedia.org/wiki/Spring_(device)

   A flat spring fixed only at one end like a cantilever, while the free-hanging end takes the load. Coil spring Also known as a helical spring. A spring (made by winding a wire around a cylinder) is of two types: Tension or extension springs are designed to become longer under load. Their turns (loops) are normally touching in the unloaded ...