... leading company in china as manufacture, stockiest, distributors, and exporters of pipe fittings products of all sizes and shapes. The ... T9711,GradeQ235,Q345,B,X42,X52,X60,X65,X70applicationAs conveyer pipe in the fields of petroleum , heat, and natural gas ... , construction pipe, ground piling pipeOutside diameter219-2420mmWall thickness5.00-30.00mmLength6- ...