Water Pipe Line O.D.:219~2540mm;W.T.:6~25.4mm; L ... A252 Gr.2,A36,A500,A139,A53 API5LGr.B~X80 Water Pipe Line Production SSAW Steel Pipe/ Spiral Seam double-side submerged ... Technique SAW welding UsagePiling projectheat-supply project 3. conveying drinking water,drainage,coal gas,fuel gas,mine slurry and other low ... steel pipe 3. ERW steel pipe 4. Casing pipe SSAW Water Pipe Line/Spiral Welded Steel Pipe