... /1629/17175 Certificate:ISO 9001, SGS, BV, etc. A53 grade b galvanized seamless pipe 1.Specification Type Seamless PipePipe Size1/2 ... G3455,JIS G3456,JIS G3457,JIS G3461MaterialA53B, A106B, API 5L B,X42,X46,X52,X60, X65, X70,X80,Q235ST37.0,ST35 ... Honry Steel Pipe Co.,LtdContact: sales@ honrypipe.com A53 grade b galvanized seamless pipe