Introduction of Stainless steel seamless pipes and Tubes
Stainless steel seamless pipes and tubes are made from stainless steel round billets. There are two different seamless pipes, hot finished and cold finished. For hot finished seamless pipes, the round billets are hot piercing, and hot rolled to specific sizes, or hot extruded to specific sizes. While for cold finished seamless pipes, The round billets are made to mother pipes by hot piercing, and then the mother pipes are made to specific size of stainless steel seamless pipes by cold rolling or cold drawing.
The most popular size of stainless steel seamless pipes and tubes are with 3 mm - 508 mm outside diameter and 0.50 mm - 50 mm wall thickness. which also includes a wide range of sizes in duplex and super-duplex stainless steels grades.
Stainless steel seamless pipes are widely used for corrosion resistant, erosion and heat-resistant pipes and tubes at chemical engineering, chemical fertilizer, food machinery, chemical machinery, oil refining, and boiler heat exchange plants.
Here below are the detailed information of stainless steel seamless pipes:
1) Standard
Seamless stainless steel tubing is available according to below standards, also customer's requirements.
- EN 10216-5 TC1 / TC2, EN 10297-2, PED 97/23/EC, AD 2000
- ASTM A312/312M, A213/213M, A269, A789, A790, A999, A632...
2) Most popular steel Grades
Austenitic stainless steel grades: 1.4301/1.4307, 1.4401/1.4404, 1.4541/1.4878, 1.4571, 1.4948; 304/304L, 316/316L, 316Ti, 317/317L, 321/321H, 304H, 347/347H, 310/310S
Duplex / super duplex stainless steel grades: 1.4462, 1.4410, 1.4539; S32205, S31803, S32750, S32760, 904 /904L.
3) Delivery condition
Seamless stainless steel tubes mainly are delivered in below conditions:
- Bright annealed,
- Solution annealed and pickled,
- Annealed and Polished
4) Max length up to 25 meters
5) Applications:
Petroleum, chemical industry, chemical fiber, smelt, medical machinery, paper making, Heat preservation and refrigeration, mechanical equipment, food, electricity, water conservancy, architecture, aerospace, navigation shipbuilding, environmental protection and boiler heat exchanger.
6) Product group including:
1. Heat exchanger tubes for heat exchangers
2. Stainless Steel Hydraulic Tubing for hydraulic systems applications.
3. Instrument tubing for instruments
4. Stainless steel boiler pipes for boilers
5. Fluid line pipes / Flowline pipe for general fluid, liquid, and gas applications
6. High temperature tubes /Heat resistant tubes
7. Duplex /super duplex steel pipes
8. Seamless Coiled tubes
9. Stainless steel capillary tubes
10. Stainless steel bright annealed tube
11. Stainless steel precision tubes
12. Stainless steel U-bend pipes
According to different applications and different features, stainless steel seamless pipes and tubes can be classed as the above products, and other various types.