... -1999 410 GB/T5312-1999 shipbuilding pipe, pressure resisting pipe, boiler pipe and superheater pipe We are ... for shipbuilding pipes, also provide boiler pipe, pressure resisting pipe, superheater pipe.The main specification we can ... materialExecutive standardSpecification scopeShipbuilding pipeFor shipbuilding, boiler, superheater,pressure resisting, etc410GB/T5312-1999 14-426*1.5-60 Specificaton ...