Two types of martensitic stainless steel pipe have been developed for linepipe applications. One is 0.01C-11Cr-1.5Ni-0.5Cu-0.01N steel pipe for CO2 environment, and the other is 0.01C-12Cr-5Ni-2Mo-0.01N steel pipe for CO2 and slight H2S environment. Both pipes are suitable for welding without preheating. They give X80 grade strength and good low temperature toughness of welds without … Read more
According to the current trend of world development, bright basic continuous heat treatment stainless steel pipe is divided into 3 types. Bright heat treatment stainless steel pipe, roller hearth furnace for such a large size, large quantities of steel heat treatment, production of 1.0t or more hours, you can use the protection of high-purity hydrogen … Read more
Combination of a variety of welding stainless steel pipe welding method has its own advantages and disadvantages. How weaknesses, some welding methods will be combined to form a new welding process, and meet people on the stainless steel pipe of the quality and productivity requirements of the current stainless steel welded pipe technology development trends. … Read more
Laser welding technology of laser welding technology is one of the latest welding technology and welding steel pipe weld is very small, high quality welding, welding speed, high-quality stainless steel tubes suitable for welding, Germany, Japan and other countries have adopted this technology (some domestic companies are using this technology). Using laser welding technology can … Read more
High frequency welding technology for high-frequency welded stainless steel pipe production has been 40 years of history, for welding stainless steel or relatively new technology, the economics of its production to more widely used in construction products decoration, household appliances and mechanical structures and other industries. Large power supply high-frequency welding of different material, diameter, … Read more
Arc welding of stainless steel pipe technology requirements penetration penetration, non-oxide inclusions, heat affected zone as small as possible. Tungsten inert gas shielded arc welding has good adaptability, high welding quality, performance and penetration, and its products in the chemical industry, nuclear industry and food industry and other fields has been widely used. TIG welding … Read more
Stainless steel pipe production technology development at present, industrial application of stainless steel welding are Tungsten Inert Gas (TIG), high frequency welding, plasma welding and laser welding and so on. Different characteristics of several welding methods, but is most frequently used high-frequency welding and soldering.
(1) Increasing the level and the use of continuous casting of stainless steel smelting tube present, continuous casting of steel has basically adopted, vertical and curved continuous casting machine in the main. Stainless steel billet and the traditional ingot – Bloom compared to good quality slab, a direct rolling, the metal recovery rate increased by … Read more
With the world economy, the corrosion resistance of stainless steel requires a gradual increase, the use of ultra-low carbon stainless steel is becoming increasingly popular; addition, because the scarcity of resources of nickel, nickel prices high, 400 series stainless steel, duplex stainless steel and super fast development, and therefore should be of stainless steel smelting … Read more
The use of insert flanges, made specifically to make jacketed piping assembly easier, also avoids the cost of alternate jacket closure methods such as closure rings, swaging the ends of the jacket pipe and custom machining the backs of standard B16.5 flanges. Instead the inserts are machined to offer easy and proven attachment methods to … Read more