Door Bolts And Dust Proof Sockets Dust Proof Strike is normally for use with the bottom bolt of flush bolts. The conventional material of Dust Proof Strike are Brass and Stainless Steel 304, and it usually come with Satin Nickel Finish. Whenever the flush bolt retracts, the spring-loaded plunger returns to the floor or threshold level, eliminating the need to clean standard floor strikes. Door Bolt Locks,Door Bolt Latches,Garage Door Bolts,Door Security Bolts Leader Hardware Manufacturer Limited , https://www.leaderhardwarecn.com
Large-diameter straight-seam welded pipes, also known as welded pipes, are manufactured by bending steel plates or strips and then welding them together. These pipes are categorized based on the weld type into straight-seam and spiral-seam welded pipes. Depending on their application, they can be classified into general welded pipes, galvanized welded pipes, oxygen-blowing welded pipes, casing pipes, metric welded pipes, idler pipes, deep well pump pipes, automobile pipes, transformer pipes, thin-wall electric welded pipes, special electric welded pipes, and spiral-welded pipes.
General welded pipes are primarily used for transporting low-pressure fluids. They are typically made from materials like Q195A, Q215A, and Q235A steel, or other mild steels that are easy to weld. These pipes undergo various tests such as hydrostatic pressure, bending, and flattening, and have specific requirements for surface quality. The standard delivery length is usually between 4 to 10 meters, although fixed-length (or double-length) delivery is often required. The size of these pipes is indicated by the nominal diameter, which may differ from the actual outer diameter. Based on wall thickness, they are divided into ordinary steel pipes and thick-walled steel pipes. Additionally, they can be either threaded or unthreaded at the ends. The common sizes range from 6 to 17 inches.
Large-diameter straight-seam welded pipes are typically produced using a steel strip, with high-frequency welding equipment being a common method. This process results in a straight seam along the pipe's length, hence the name "straight-seam." Depending on their intended use, they can be further categorized into scaffolding tubes, fluid conveyance tubes, wire conduits, bracket tubes, guardrail tubes, and more.
Low-pressure fluid welded pipes are a subset of straight-seam welded pipes, mainly used for transporting water and gas. After welding, they undergo more rigorous hydraulic pressure testing compared to regular welded pipes, making them more durable and reliable. As a result, low-pressure fluid pipes generally offer better performance than standard straight-seam pipes. In terms of pricing, they tend to be about 80 yuan more expensive than regular options.