Stainless Steel Pipe

  
        Welded Pipe                   Seamless Pipe                        Ornament Pipe

Product Stocking and Processing

Stainless Steel Pipe
Form	Welded and Seamless in round
Application	Fluid, Decorative
Size Range	DN6 - DN600
Grades	304/304L, 316/316L, 2205
Wall Thickness	Sch 10S, 40S, 80S
Fittings	Butt weld, Screwed & socket flanges
Processing	Cut-to-length, polishing

Stainless Steel Piping Systems

A stainless steel pipe system is the product of choice for carrying corrosive or sanitary fluids, slurries and gases, particularly where high pressures, high temperatures or corrosive environments are involved. As a result of the aesthetic properties of stainless steel, pipe is often use in architectural applications.

Stainless steel pipe can generally be defined as a heavy wall thickness tubing, with dimensions as specified by the American National Standards Institute (ANSI). Pipe dimensions are nominated by outside diameter - indicated by the NPS (imperial) or DN (metric) designator and sometimes referred to as the 'nominal bore' - and wall thickness, is determined by the schedule number. The standard ASME B36.19 covers these dimensions.

Stainless steel pipe and fittings are supplied in the annealed condition to facilitate fabrication and ensure best corrosion resistance. Atlas Steels can also supply stainless steel pipe with an abrasive polished finish suitable for architectural applications.

Welded pipe

Welded stainless steel pipe is manufactured from 2B or HRAP stainless steel strip - formed (to shape) and longitudinally welded to completed pipe. With the exception of very large pipe welds are made without the addition of filler metal. Standard welded pipe is in nominal lengths of 6.0 to 6.1 metres.

Manufacturing specification:

• ASTM A312M - Austenitic
• ASTM A358M - Austenitic (large diameter)
• ASTM A790M - Duplex.

Seamless Pipe
Seamless stainless steel pipe is produced from hollow billets, which are then drawn across dies until they reach the final desired pipe size and wall thickness. Standard seamless pipe is in random lengths of 6.0 to 7.5 metres.

Manufacturing specification:

• ASTM A312M - Austenitic.
• ASTM A790M - Duplex

Stainless Steel Pipe Product Specification

Standard	Description
ASTM A312/A312M	Seamless and welded austenitic stainless steel pipe.
ASTM A358/A358M	Electric-Fusion-Welded (EFW) austenitic chromium-nickel alloy steel pipe for high temperature service.
ASTM A409/A409M	Welded large diameter austenitic steel pipe for corrosive or high temperature service.
ASTM A731/A731M	Seamless and welded ferritic and martensitic stainless steel pipe.
ASTM A790/A790M	Seamless and welded ferritic/austenitic stainless steel pipe.
ASTM A450/A450M	General requirements for carbon, ferritic alloy and austenitic alloy steel tubes.
ASTM A530/A530M	General requirements for specialised carbon and alloy steel pipe.
JIS G3459	Stainless steel pipes.
ANSI/ASME B36.10M	Welded and seamless wrought steel pipe.
ANSI/ASME B36.19M	Stainless steel pipe.
Higher austenitic
ASTM A673	UNS N08904 welded pipe.
ASTM A677	UNS N08904 seamless pipe and tube.