... as manufacture, stockiest, distributors, and exporters of pipe fittings products of all sizes and shapes. ... 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- ... 3183GB/T 9711PSL1A25/L1750.210.600.0300.030A25P/L175P0.210.600.0800.030A/L2100.220.900 ...