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Research progress on coking mechanism and protective measures of ethylene crac……

Introduced the three coking mechanisms of ethylene cracking furnace tube catalytic coking, free radical coking and gas phase coking, as well as the development of coking suppression technology at home and abroad in recent years, and how to improve the cracking raw materials and furnace tube materials, and optimize the cracking process and structure. The use of coking inhibitors and surface coating technologies are introduced in detail. Finally, relevant suggestions are put forward on how to reduce the coking situation and improve the service life of the furnace tube. The comprehensive use of a variety of measures to inhibit coking […]

2020-10-24

Nickel-based super alloy: Hastelloy G30 (UNS N06030)

What is Hastelloy G30? Hastelloy G-30 is designated as UNS N06030 or DIN 2.4603. It is a nickel-chromium-iron material with excellent resistance to phosphoric acid environment (wet process). Hastelloy G30 is a nickel-based high-temperature alloy composed of nickel, chromium, cobalt, tungsten and other elements, with a nickel content of about 37%. It is also moderately resistant to local corrosion caused by chlorides, which may be a problem under the deposits in the evaporator used to concentrate phosphoric acid. In addition, compared with stainless steel, G-30 alloy is less susceptible to stress corrosion cracking caused by chloride. Hastelloy G30 is a […]

2020-10-20

Nickel-based super alloy: Hastelloy G3 (UNS N06985)

What is Hastelloy G3? Hastelloy G3 (also known as “Alloy G3”) is designated UNS N06985 or DIN 2.4619 and is a nickel-chromium-iron alloy with added molybdenum and copper. It has good weldability and has the ability to resist intergranular corrosion under welding conditions. The low carbon content helps prevent sensitization of the welding heat-affected zone and subsequent intergranular corrosion. Hastelloy G3 is commonly used in flue gas scrubbers and processing reducing acids, such as phosphoric acid and sulfuric acid. Hastelloy G3 is a nickel-based high-temperature alloy composed of nickel, chromium, molybdenum, cobalt and other elements, with a nickel content of […]

2020-10-16

Terminator of water leakage: stainless steel corrugated water pipeline

The huge urban water supply network will be from the source of water, after the treatment of water plants to thousands of households, without it, life is unimaginable. But on average, more than a quarter of the water produced by water companies is lost in the middle of the way and does not reach the customers. The main cause of water leakage is the leakage and explosion of old pipes, as well as the loosening or corrosion of pipe fittings. On average, 25-30% of the world’s water is lost during transportation. In Europe, an average of 26% of water is […]

2020-10-05

Nickel-based super alloy: Hastelloy S (UNS N06635)

What is Hastelloy S? Hastelloy S (also known as alloy s), named UNS N06635, is a nickel based superalloy with excellent thermal stability, low thermal expansion, and oxidation resistance at 1095 ° C [2000 ° F]. It retains strength and ductility after aging at 425 to 870 ° C [800 to 1600 ° F]. Hastelloy S is mainly used in applications involving severe cyclic heating conditions where components must be able to maintain strength, ductility and metallurgical integrity after prolonged exposure, and are widely used as seals for gas turbine engines, and their low coefficient of thermal expansion is also […]

2020-10-05

Nickel-based super alloy: Hastelloy W (UNS N10004)

What is Hastelloy W? Hastelloy W alloy is a kind of nickel base superalloy composed of nickel, molybdenum, chromium, cobalt and other elements. The nickel content of Hastelloy W alloy is about 60%. Hastelloy W is a kind of solid solution strengthening alloy, which is mainly used for welding of dissimilar alloys. It can be used for straight cutting length wire of gas tungsten arc welding, layer wound wire of gas shielded metal arc welding and covered electrode. The properties of dissimilar welded joints made of alloy w depend on the alloy to which they are connected, but they are […]

2020-09-28

Nickel-based super alloy: Hastelloy C-2000 (UNS N06200)

What is Hastelloy C-2000? Hastelloy C-2000 (UNS N06200) is a unique multi-functional Ni Cr Mo alloy material, which contains a deliberately added copper. This greatly increases the resistance to sulfuric acid. It also has a high chromium content to maximize resistance to oxidizing chemicals and process streams contaminated by iron ions and dissolved oxygen. Hastelloy C-2000, named UNS N06200, is a kind of Ni Cr Mo alloy. Adding a certain amount of copper into sulfuric acid, hydrofluoric acid and dilute hydrochloric acid can improve its temperature performance. The high chromium content allows it to maximize resistance to oxidizing chemicals and […]

2020-09-27

What is submarine pipeline laying?

What is submarine pipeline laying? Submarine pipeline is a kind of pipeline that continuously transports a large amount of oil (gas) on the seabed through closed pipelines. It is the main component of offshore oil (gas) field development and production system, and is also the fastest, safest, economic and reliable mode of offshore oil and gas transportation. There are two common laying methods for subsea pipelines: one is pipeline dragging method, the other is pipe laying ship method. The towing method is generally suitable for the laying of submarine pipelines in landing or under sea section, beach and extremely shallow […]

2020-09-26

What is matte titanium pipe?

What is matte titanium pipe? Matte titanium pipe is a kind of titanium welded pipe which is made of titanium plate or titanium strip by zigzag forming and then welding. Classification of matte titanium pipe It can be divided into straight seam matte titanium pipe and spiral matte titanium pipe according to welding method; it can be divided into normal matte titanium pipe, galvanized matte titanium pipe, oxygen blowing matte titanium pipe, wire sleeve, metric matte titanium pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, welding thin-wall pipe, welding special-shaped pipe and spiral matte titanium pipe. Common […]

2020-09-22

Nickel-based super alloy: Hastelloy X (UNS N06002)

What is Hastelloy X? Hastelloy X (UNS N06002/W.Nr. 2.4665/Alloy X) is a nickel-chromium-iron-molybdenum alloy that possesses an exceptional combination of oxidation resistance, fabricability, and high-temperature strength. Hastelloy X has also been found to be exceptionally resistant to stress-corrosion cracking in petrochemical applications and resistant to carburization and nitriding. This Alloy X exhibits good ductility after prolonged exposure at temperatures of 650°C[1200°F], 760[1400°F] and 870°C[1600°F] for a period of 16000 hours. Hastelloy X are widely used in gas turbines, petrochemical and nuclear industries, furnaces, pressure equipment, and aircraft components. ASME B16.47 Series A Hastelloy X weld neck flanges Characteristics of Hastelloy X (UNS […]

2020-09-11

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Research progress on coking mechanism and protective measures of ethylene crac……

Nickel-based super alloy: Hastelloy G30 (UNS N06030)

Nickel-based super alloy: Hastelloy G3 (UNS N06985)

Terminator of water leakage: stainless steel corrugated water pipeline

Nickel-based super alloy: Hastelloy S (UNS N06635)

Nickel-based super alloy: Hastelloy W (UNS N10004)

Nickel-based super alloy: Hastelloy C-2000 (UNS N06200)

What is submarine pipeline laying?

What is matte titanium pipe?

Nickel-based super alloy: Hastelloy X (UNS N06002)