Spiral-weld pipe
Naylor Pipe Company
with ASTM A-139; ASTM A-252, and AWWA C200. It
is made from steel strip on automatic equipment designed by
Naylor that forms, sizes and completes the manufacture; first,
by a sound initial penetrating weld, then followed by a second
weld along the outside spiral seam. Each length of completed
Naylor Spiral Buttweld Pipe is carefully inspected, and where
service conditions require, a hydrostatic test is given to ASTM
requirements as shown on pages 3, 4 and 5.
