structural pipe SSAW pipestandard:API,ASTM,ASME,ANSI,JIS,DIN,BS, ... ,ISO material:API 5L, A53,A106,A333 GR6,Q235,Q345 structural pipe SSAW SSAW (Spiral Submerged-arc Welded) Quality standard: API ... of the pipe and then jointed with bolts. Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical ...