Grades M1 and M2 cover cold-worked, seamless nickel-copper pipe and pipe intended for use in general engineering applications requiring superior seawater corrosion resistance. Pipe and tube ordered under these grades are considered suitable for welding, and suitable for forming operations involving bending, flaring and flanging. Pipe is to be ordered to ANSI B36.19. Tube is to be ordered to an outer diameter and a nominal or minimum wall thickness specified by the purchaser and approved for the application.
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