Market’s most extensive line of heavy-wall and low-temperature pipes are utilized in shipbuilding and pressure-vessel applications.
The reputed seamless steel pipes and tube manufacturers generally caters:
- High-chrome alloy pipe that meets special chemistries and heat treatments
- Pipe that comes normalized with Charpy testing
- Heads that go with pressure vessels
- Pipe in unique sizes
- ASME SA333 grade 6 pipes
- Heavy cross sections for stern tube applications
Customers can procure foreign and domestic pipe, tube, fittings and flanges to meet ASME and AML requirements for pressure vessel lines. In addition to an extensive inventory, American Piping Products offers partial fabrication, including cutting up and beveling kits. These value-added services ensure pipe comes fully tested, on-spec, and ready to use, so shipbuilders can save time and reduce costs.
Heat Treatment of Stainless-steel Ship Building Tube
Stainless steel materials have a wide application in our life because they have a lot of good properties. Stainless steel tube is a main kind of stainless-steel products. There are many types and specifications of stainless-steel tubes. According to production process, stainless steel tube can be classified as stainless-steel seamless pipe and stainless-steel welded pipe. There is a special kind of stainless-steel pipe called stainless steel shipbuilding tube. It is used for manufacturing ships. The heat treatment is an important part of stainless-steel ship building production.
There are many kinds of heat treatment. The most widely used is annealing and hardening. Here we will learn further information about the two production processes.
- Annealing
Annealing is the process by which both metal and glass are treated with heat in order to change their properties. For a full annealing of the stainless-steel ship building tube, it must be introduced to an approximate temperature approximately 50 degree centigrade above the Austenitic temperature. This temperature should be maintained for a period that ensures that the entirety of the material involved is transformed into Austenite or Austenite-Cementite. Then the stainless-steel ship building tube can be softened and residual stress can be eliminated. Also, distortion and cracking tendency can be reduced.
- Hardening
Manufacturers heat stainless steel ship building tubes to high temperatures and then subject the tubes to a process called quenching. During quenching, the steel pipes are rapidly cooled in a solution of brine or water. After quenching, the steel is very hard, yet also extremely brittle. To reduce brittleness while maintaining the added hardness of the steel, manufacturers then temper the metal by reheating it once again and letting it cool naturally. That is hardening.
Usually,two kinds of heat treatments of stainless-steel tube are used to make pipes of the highest quality. The leading piping mills have adopted the advanced technology and then strictly abide by the operation procedures to produce all kinds of high-quality stainless-steel pipes. In order to meet the standards of customers, these pipe manufacturers have made every effort and the research and development team there also work hard. Therefore, if you are in need of any kind of high-quality stainless-steel pipe and pipe fittings for your ship building project, you need to find the leading manufactures of the country in order to obtain the required quality and performance.
