... DIN 3: ISO9001 SGS,API 8" astm a106 gr.b galvanized steel pipe 1.Specification Type Galvanized Steel PipePipe ... G3457,JIS G3461MaterialQ235, 20#, Q345A53B, A106B, API 5L B,X42,X46,X52,X60, X65ST37.0,ST35.8,St37. ... pressure fluid pipeline, boiler, petroleum and natural gas industry, drilling, chemical industry, electric industry, shipbuilding, fertilizer equipment and pipeline, structure, petrochemical, ...