ASTM A358 CL.1 TP316L S31603 1.4404 Stainless Steel Welded Pipe

YUHONG Group is one of the large suppliers for high quality ASTM A358 Pipes.
ASTM A358 316/316L Pipe has been serving the need of gas and oil industry, power plants, shipbuilding, automotive and many other industries also. This type of alloy is leading in the transportation industry for carrying water, gas, oil, etc, from one place to another.

ASTM A358 CL1 - ASTM A358 Class 1 Pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.
ASTM A358 CL2 - ASTM A358 Class 2 Pipe shall be double welded by processes employing filler metal in all passes, no radiography is required.
ASTM A358 CL3 - ASTM A358 Class 3 Pipe shall be single welded by processes employing filler metal in all passes and shall be completely radiographed.
ASTM A358 CL4 - Same as ASTM A358 Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal.
ASTM A358 CL5 - ASTM A358 Class 5 Pipe shall be double welded by processes employing filler metal in all passes and shall be spot radiographed.


Radiographic Examination

16.1 For Classes 1, 3, and 4 pipe, all welded joints shall be completely examined by radiography.

16.2 For Class 5 pipe, the welded joints shall be spot radiographed to the extent of not less than 12 in. [300 mm] of
radiograph per 50 ft [15 m] of weld.
16.3 For Classes 1, 3, and 4 pipe, radiographic examination shall be in accordance with the requirements of the ASME
Boiler and Pressure Vessel Code, Section VIII, latest edition, Paragraph UW-51.
16.4 For Class 5 pipe, radiographic examination shall be in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, latest edition,Paragraph UW-52.
16.5 Radiographic examination is permitted to be performed prior to heat treatment.

Chemical Composition