
ERW Pipe (Electric Resistance Welded),HFW(High-Frequency Welding)...API 5L, ASTM A53, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217
LSAW (Longitudinal Submerge-arc Welded) UO(UOE),RB(RBE),JCO(JCOE),DSAW (Double Submerged arc welded) API 5L, ASTM A53, ASTM A252, ASTM A671/672, EN 10217
SAW(SAWL,SAWH): Spiral Welded Pipe,SSAW: Spiral Submerged-arc Welded API 5L, ASTM A53, ASTM A252, EN10219, EN 10217