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Stainless steel seamless pipes according to US / ASTM standards, which also includes a wide range of sizes in duplex and super-duplex stainless steels grades.

1) Standard
Ruimai Stainless steel seamless pipe is available in various kinds of US standards as below:

• ASTM A312/312M, A213/213M, A269, A789, A790, A999, A632
• Nace 0175 MR

2)  Steel Grades
Austenitic stainless steel grades: 304/304L, 316/316L, 316Ti, 317/317L, 321/321H, 304H, 347/347H, 310/310S
Duplex / super duplex stainless steel grades: S32205, S31803, S32750, S32760, 904 /904L.

3)  Delivery condition
Stainless steel seamless pipes are delivered in conditions as below:
- Bright annealed, 
- Solution annealed and pickled, 
- Annealed and Polished

4)  Size Range
Ruimai stainless steel seamless pipes covers a wide range of dimensions as below.
Outer Diameter: 3 mm to 508 mm; 
Wall thickness: 0.5 mm - 40 mm

ASTM /US Standard stainless steel seamless pipes are supplied as:

• Stainless steel heat exchanger tubes    
• Stainless steel Hydraulic Tubing
• Stainless steel instrument tubing
• Stainless steel boiler tubes
• Line pipes / Flowline pipe
• Heat resistant tubes/ Furnace tubes
• Duplex /super duplex steel pipes
• Seamless Coiled tubes
• Stainless steel capillary tubes
• Stainless steel bright annealed tube
• Stainless steel precision tubes
• Stainless steel U-bent tubes