Introduction According to different shaping methods, carbon steel pipes could be classified into seamless steel pipe (SMLS), high frequency welded pipe (HFW), longitudinal submerged arc welded steel pipe (SAWL) and spiral submerged arc welded pipe (SAWS).
Standards: ASTM A106/A53/A210/A252/A333/A513/A789 ASME SA213 API 5L, API 5CT EN10216, EN10219 GB9711, GB8163 Specifications: SMLS:1/4”-24”
HFW:1/2”-24”
SAWL: 10”-60”
SAWS: 8”-120”