- Longitudinal Submerged Arc Welding (LSAW / SAWL) is a specific welding technique used in pipe production where the finished product requires a particularly high wall thickness due to high internal or external pressures.The LSAW pipe diameter range is larger than ERW (Electric resistance welding), normally from 16 inch (406 mm) to 60 inch (1500 mm).
- Implementation standards：GB/T 8162, GB/T 8163, GB/T 9711, API SPEC 5L, ASTM A500, ASTM A53, ASTM A106, etc.
- Steel grade：Q235, Q355, 20#, 45#, A53 GR.B, A106 GR.B, L245 B, L290 X42, L360 X52, etc.
- Application areas：Main applications include oil, natural gas, gas, central heating, water supply, sewage treatment and other similar uses.
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