The production method is divided into hot rolling, hot extrusion and cold drawing (rolling) stainless steel pipe.
Production process:
Hot rolling (extrusion Seamless Steel Tube) : round tube billet → heating → perforation → three-high cross rolling, continuous rolling or extrusion → pipe removal → sizing (or reducing) → cooling → straightening → hydraulic test (or flaw detection) → marking → storage
Cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → billet tube → heat treatment → straightening → hydraulic test (crack detection) → marking → storage
Stainless Steel Tubes including following Steel Grade:
Nickel Alloy Grade:
N02200/2201, N04400, N06600, N06601, N06625, N06852, N06219, N06690, N08800/8810/8811, N08825, N08028, N08535, N08904, N08925, N08926, N010276, N06022, etc.
304/304L, 316/316L, 314, 321, 347H, 316Ti, 316LMod, 317L/N, 310S, 253MA, 330, 904L, S31254, XM-19, etc
S31803, S32304, S31500, S32550, S32750, S32760, etc.
Stainless Steel 304 Pipes,Stainless Steel Pipe Fittings,Seamless Stainless Steel Pipe,Seamless Stainless Steel Tube TORICH INTERNATIONAL LIMITED , https://www.steeltubepipechina.com
The salt-making process has several kinds of raw materials, product uses, and energy production methods, but there are two main processes: evaporation crystallization, dehydration and drying: vacuum evaporation, centrifugal dehydration, and boiling drying are used in China. Different components of brine take different salt production processes, in addition to the production of salt, while recovering products such as gypsum and thenardite.
According to the different microstructure of stainless steel semi-ferritic semi-martensitic stainless steel pipe, martensitic stainless steel pipe, austenitic stainless steel pipe, austenitic - ferric iron stainless steel pipe, etc.
Well salt processing technology
The raw materials used in the production of mine salt in China are generally divided into two categories: rock salt artificial brine and natural underground brine. The main methods of brine treatment are air blowing method, tower furnace degassing method, strip frame method, chemical method, lime (or caustic soda) -glauber method, lime- gypsum method, yellow and black (rock) halogen mixing method, lime- More than 10 kinds of soda ash method, lime-glauber-carbonization method, caustic soda-soda ash-chloride method.