Application: petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat-exchanger and other field.
For low and medium pressure boiler, high pressure boiler, ship, liquid service, petroleum cracking, chemical fertilizer equipment, drawing-oil-equipment and structure purposes petrochemical industry, natural industry, environmental protection, pharmaceutical chemical, food machinery, water supply, architecture boiler heat exchange, oil pipline, pipe material collar, oil natural gas, industrial gas, water, oil transportation.