Flange connection method, welding quality, welding process

Connection mode editing Forged Flange Manufacturers
Flange connection is to fix two pipes, pipe fittings or equipment on a flange, and between the two flanges, with flange pads, bolted together to complete the connection. . Some fittings and equipment have their own flanges and are also flanged. Flange connection is an important connection method for pipeline construction. The flange connection is easy to use and can withstand large pressures. In industrial pipes, in the home, the pipe diameter is small and low pressure, and the flange connection is not visible. If you are in a boiler room or production site, there are flanged pipes and equipment everywhere. [1]
1, according to the connection type of flange connection can be divided into: plate flat welding flange, neck flat welding flange, neck butt welding flange, socket welding flange, threaded flange, flange cover, with neck pair Welding ring loose flange, flat welding ring loose flange, ring groove flange and flange cover, large diameter flat flange, large diameter high neck flange, eight-word blind plate, butt weld ring loose flange, etc. [3] .Forged Flange Suppliers
Welding quality editor
As an iron plate welded flange, many customers question whether the quality of the iron plate welding flange is better than the forged welding flange. In fact, the quality of the iron plate welding flange and the quality of the forged welding flange are the same, but the iron plate welding flange can not be guaranteed in any place, that is, the material of the iron plate welding flange is the most unprotected, because In the general process, the density of the iron plate welding flange is not problematic, but in the process of production, the blank of the iron plate welding flange is rarely detected, so, after the production, it does not pass. The material of the tested iron plate welding flange is not guaranteed. [1]
Welding process editing
Required equipment

A set of manual welding equipment, a handle angle grinder, an electric hammer, a flat ruler.
Preparation before welding
1. Check the commissioning equipment to ensure the normal operation of the equipment; 2. Prepare the φ4.0J402 electrode for drying for one hour at 300 °C-350 °C.
Welding process
1. Assemble the vertebral body and the large flange according to the requirements of the drawings, and then divide the large flange into 8 equal parts. 2, welding due to the thicker flange, the groove is larger, so the use of segmental symmetry, multi-layer welding.
Weld quality
The weld strength is required to be at least the strength of the base metal. The surface of the weld is smooth and smooth, and there are no defects such as burn through, pores, welds, slag inclusions, undercuts, and insufficient welds. The residual height is less than 2mm.
Precautions
1. When using the J506 electrode, it must be manually surfacing and use small current welding. Welding in strict accordance with the welding process. 2. After each welding position, use a level to clamp the deformation of the flange plane. 3. While welding, hammer the weld with a hammer to achieve the effect of eliminating stress.
Flange gasket  Pipe Fittings Suppliers
Rubber flange gasket
Rubber flange gasket
A gasket is a ring made of a material that is plastically deformed and has a certain strength. Most of the gaskets are cut from non-metal plates, or made by professional factories according to the specified size. The materials are asbestos rubber sheets, asbestos sheets, PTFE sheets, polyethylene sheets, etc.; also useful for thin metal sheets (iron sheets, Stainless steel) a metal-clad gasket made of non-metallic materials such as asbestos; a wound gasket made of a thin steel strip and an asbestos tape, the most commonly used is a stainless steel strip and graphite Metal wound gaskets can also be used with asbestos depending on the environment. Ordinary rubber gaskets are suitable for temperatures below 120 °C; asbestos rubber gaskets are suitable for general corrosive applications where the water vapor temperature is below 450 ° C, for oil temperatures below 350 ° C, and pressures below 5 MPa. Medium, the most commonly used is acid-resistant asbestos board. In high-voltage equipment and pipelines, lens or other shapes of metal gaskets made of copper, aluminum, 10 steel, and stainless steel are used. The contact width between the high pressure gasket and the sealing surface is very narrow (line contact), and the sealing surface and the gasket have a high processing finish.
Low-pressure small-diameter wire-bonded flanges, high-pressure and low-pressure large diameters are all welded flanges. The thickness of the flanges of different pressures and the diameter and number of connecting bolts are different.

Flange material and classification method

Plate type flat welded steel pipe flange Forged Flange Manufacturers

1. According to the chemical industry (HG) industry standard: integral flange (IF), threaded flange (Th), plate flat welding flange (PL), neck butt weld flange (WN), neck flat welding flange (SO), socket weld flange (SW), butt weld ring loose flange (PJ/SE), flat weld ring loose flange (PJ/RJ), lining flange cover (BL(S)), Flange cover (BL) [2].
2, according to petrochemical (SH) industry standards: threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ) , flange cover (not shown).
3. According to the mechanical (JB) industry standard: integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanged ring plate loose sleeve Flange, flange cover.
4. According to the national (GB) standard: integral flange, thread flange, butt weld flange, neck flat weld flange, neck socket weld flange, butt weld ring with neck loose flange, plate flat Welded flange, butt welded ring plate loose flange, flat welded ring plate loose flange, flanged ring plate loose flange, flange cover.
Material editing
WCB (carbon steel), LCB (low temperature carbon steel), LC3 (3.5% nickel steel), WC5 (1.25% chromium 0.5% molybdenum steel), WC9 (2.25% chromium), C5 (5% chromium 0.5% molybdenum), C12 (9% chromium 1% molybdenum), CA6NM (4 (12% chrome steel), CA15 (4) (12% chromium), CF8M (316 stainless steel), CF8C (347 stainless steel), CF8 (304 stainless steel), CF3 (304L Stainless steel), CF3M (316L stainless steel), CN7M (alloy steel), M35-1 (Monel), N7M (Hast nickel alloy B), CW6M (Hasta nickel alloy C), CY40 (Inconel nickel alloy) Wait. Pipe Fittings Suppliers

Faulty pipe forces meet cancellation at Goulburn Race Course

Last Monday, in a turn of horrendous luck for the Goulburn Race Club, a pipe underneath the track malfunctioned and forced the cancellation of the rest of the day’s races.
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Soft ground: The burst pipe caused the track to become dangerous for the riders and their horses. Photo: Goulburn Race Club.
 Soft ground: The burst pipe caused the track to become dangerous for the riders and their horses. Photo: Goulburn Race Club.

In a statement released last Monday afternoon, club chief executive Robyn Fife said that cancellation was the only option once the extent of the water leaking from a burst

pipe was discovered.Pipe Fittings Suppliers

“With a burst water main flooding part of the track after Race One, Racing NSW stewards and the race club had no other alternative but to call off the remainder of the

meeting,” Fife said.

“The safety of our racing surface is paramount to us as a race club and most importantly to the industry participants who come here to race.”

Local trainer Danny Williams, who was set to have several horses race on Monday, understood why the meet was cancelled, but said it came at a cost to trainers and owners

involved.

“Things like [the cancellation] happen occasionally,” Williams said. “It’s just bad luck.
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“Someone comes in from the city … and they would’ve had to have hired staff on the day, and fuel for travelling, it’s quite disruptive.”

The cost was not quite so large to Williams, who trains his horses locally and subsequently did not incur travel costs for last week’s event.

The executive officer of Racing NSW Country, Brian Charman, confirmed that the trainers whose events were cancelled would receive compensation in the form of “a package

that Racing NSW has established, and the trainers are aware of what that is.”

Aside from compensation for the trainers, Racing NSW confirmed with the Post that the horses that were accepted for [Monday’s] meeting but did not get to race would be able

to “re-nominate for an upcoming meeting until 4pm on the day prior to final acceptances.” Forged Flange Manufacturers

Goulburn Race Club did not confirm how long it would take to mend the pipe.

Fife said Goulburn Race Club would “work closely with Racing NSW to have the issue addressed immediately.”

The next meet at the Goulburn Race Course the Premierships Race Day, which is scheduled to take place on Friday August 31.

Tamuda Investment Group opens steel pipe unit in Bulawayo in SA

Tamuda Investment Group opens steel pipe unit in Bulawayo in SA
The Chronicle reported that South Acrica headquartered engineering and steel firm, Tamuda Investment Group (TIG), has opened a steel and pipe business in Bulawayo with plans Alloy Steel Pipes Fittings Suppliers

to establish a manufacturing plant that will provide one-stop-shop engineering services to a diversity of clients. The group is already engaged in steel and pipe merchanting

at Belmont industrial area where it has been operating for the past two months. Business Chronicle met group chief executive officer, Mr Terry Kumira, who was in Bulawayo Pipe Fittings Suppliers

this week to assess progress in the new business and seek deeper engagement for further investments.

He said their investment drive was a response to reforms under President Mnangagwa’s administration, which has opened the country for business.

Mr Kumira said “President Emmerson Mnangagwa, at the Zimbabwe Embassy in Pretoria on the 22nd of December 2017, emphasised the fact that we as the diaspora had to lead the

drive for investment in Zimbabwe as we had acquired the expertise and relationships that could help the country move forward. Indeed, his clarion call that 'Zimbabwe is open
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for business' has resonated well with our business strategy of establishing a foothold in the motherland and as such we are looking at being part of the solution and put key

resources in place for future investment to flow into the country."

He said TIG was in the process of developing and finalising several investment projects in the country some of which are at a very advanced stage. The Bulawayo project is
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one of the champion initiatives under the company's steel merchanting and engineering value addition thrust.

Southern Pipeline steel pipe success

Another milestone has been reached in the Southern Pipeline harbour crossing project, with 1.6km of steel pipe successfully being pulled the full distance under the harbour,

surfacing at Matapihi. Pipe Fittings Suppliers 

Tauranga City Council project manager Howard Severinsen says it's a major milestone for the project.

“Having the steel pipe successfully installed means we’ve secured a path across the harbour."

The pipe was successfully installed at 3pm on Saturday.

"We no longer need to rely on drilling mud to hold open the drilled hole. The next task will be to winch through a smaller polyethylene pipe that will eventually carry the

wastewater.”Alloy Steel Pipes Fittings Suppliers

Howard says this phase of the project was not without its challenges.

“Contractors began installing the steel pipe under the harbour on Friday 20 July. The first part of the operation went smoothly, but on day four then there was some

difficulty getting the steel pipe through the last 40 metres.

“Water was being pumped into the pipe to keep it stable as it moved through the drilling mud. At the point where it needed to be guided through a protective steel casing at  Steel Pipe Supplier 

Matapihi, the pipe was sitting too low. The end of the pipe was at an angle too steep to be pulled into the casing.”

To remedy this issue, air was introduced through to the end of the pipe, making it more buoyant so that it shifted upwards and was at a better angle to fit into the outer

steel sleeve.

Howard says the contractors Brian Perry Civil resumed 24-hour work over the weekend to complete the steel pipe installation.

“It’s shown an impressive level of innovation and determination to keep moving through these hurdles and to reach this point of the project. There were a lot of relieved
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faces on the site on Saturday afternoon.”

Once connected, the pipeline and pump stations are expected to be tested and commissioned by December 2018.

Classification by section shape

There are many kinds and specifications of steel pipe products, and their performance requirements are various. All these should be differentiated according to user requirements or working conditions. Usually, steel pipe products are classified according to section shape, production method, pipe material, connection mode, plating characteristics and application.Forged Flange Suppliers

The steel pipe can be divided into round steel pipe and special-shaped steel pipe according to the cross-section shape.

Special-shaped steel pipe refers to a variety of non-circular section of the steel pipe. Among them are square tube, rectangular tube, elliptical tube, flat ellipsoid tube, semicircle tube, hexagonal tube, six angle inner tube, hexagonal tube, equilateral triangle tube, five angle plum blossom tube, octagonal tube, convex shape tube and double convex tube. Double concave tube, multi concave tube, melon seed tube, flat tube, diamond tube, star tube, parallel quadrilateral tube, ribbed tube, drop tube, inner fin tube, twisted tube, B tube, D tube and multi-layer tube, etc.

According to the longitudinal section shape, the steel pipe is divided into equal section steel pipe and variable section steel pipe. Variable cross-section (or variable cross-section) steel pipe refers to the steel pipe with periodic or non-periodic changes in cross-section shape, internal and external diameter and wall thickness along the length direction. The main features are: outer cone tube, inner cone tube, outer step tube, inner step tube, periodic section tube, bellows, spiral pipe, steel tube with heat sink and barrel with compound line.http://www.dtflanges.com/

Classification according to coating characteristics

According to the surface coating characteristics, the steel pipes can be divided into black pipes (non-coated) and coated pipes.Forged Flange Manufacturers

The coated pipes include galvanized, aluminized, chromized, aluminized and other alloy coated pipes.

The coated pipe includes outer coated pipe, inner coated pipe and inner and outer coated pipe. The commonly used coatings are plastics, epoxy resin, coal tar epoxy resin and a variety of glass-based anticorrosive coatings. The galvanized pipe is divided into KBG tube, JDG tube, thread tube, etc.

By use

1. pipe for pipe. Such as: water, gas, steam pipelines with seamless pipe, oil pipeline, oil and natural gas trunk pipe. Agricultural irrigation taps with pipes and sprinkler irrigation pipes.

2. pipe for thermal equipment. Such as boiling water pipes, superheated steam pipes for general boilers, superheated pipes for locomotive boilers, large smoke pipes, small smoke pipes, arch brick pipes and high temperature and high pressure boiler pipes.

3. pipe used in mechanical industry. Such as air structure tube (circular tube, elliptical tube, flat ellipse tube), automobile semi axle tube, axle tube, automobile tractor structure tube, tractor's oil cooler pipe, square tube and rectangular tube for agricultural machinery, transformer pipe and bearing pipe, etc.

4. pipe for petroleum geological drilling. Such as: oil drilling pipe, oil drilling rod (square drilling rod and six corner drill rod), drilling, oil tubing, oil casing and various pipe joints, geological drilling pipe (core pipe, casing, active drill pipe, drilling, hoop and pin connection).

5. chemical industrial pipe. Such as: petroleum cracking pipe, chemical equipment heat exchanger and pipeline pipe, stainless acid-resistant pipe, high-pressure pipe for fertilizer and transport of chemical media pipe.

6. other departments use pipes. For example: container pipe (high pressure cylinder pipe and general container pipe), instrument pipe, watch shell pipe, needle and its medical equipment pipe. http://www.dtflanges.com/

U.S. spy agencies: North Korea is working on new missiles

U.S. spy agencies Forged Flange Suppliers are seeing signs that North Korea is constructing new missiles at a factory that produced the country’s first intercontinental ballistic missiles capable of reaching the United States, according to officials familiar with the intelligence.

Newly obtained evidence, including satellite photos taken in recent weeks, indicates that work is underway on at least one and possibly two liquid-fueled ICBMs at a large research facility in Sanumdong, on the outskirts of Pyongyang, according to the officials, who spoke on the condition of anonymity to describe classified intelligence.

The findings are the latest to show ongoing activity inside North Korea’s nuclear and missile facilities at a time when the country’s leaders are engaged in arms talks with the United States. The new intelligence does not suggest an expansion of North Korea’s capabilities but shows that work on advanced weapons is continuing weeks after President Trump declared in a Twitter posting that Pyongyang was “no longer a Nuclear Threat.”Forged Flange Manufacturers


The reports about new missile construction come after recent revelations about a suspected uranium-enrichment facility, called Kangson, that North Korea is operating in secret. Secretary of State Mike Pompeo acknowledged during Senate testimony last week that North Korean factories “continue to produce fissile material” used in making nuclear weapons. He declined to say whether Pyongyang is building new missiles.

[Pompeo pushes back against North Korea’s ‘gangster-like’ critique]

During a summit with Trump in June, North Korean leader Kim Jong Un agreed to a vaguely worded pledge to “work toward” the “denuclearization” of the Korean Peninsula. But since then, North Korea has made few tangible moves signaling an intention to disarm.

Fact-checking President Trump's claims about the success of the North Korea deal
Instead, senior North Korean officials have discussed their intention to deceive Washington about the number of nuclear warheads and missiles they have, as well as the types and numbers of facilities, and to rebuff international inspectors, according to intelligence gathered by U.S. agencies. Their strategy includes potentially asserting that they have fully denuclearized by declaring and disposing of 20 warheads while retaining dozens more.


The Sanumdong factory has produced two of North Korea’s ICBMs, including the powerful Hwasong-15, the first with a proven range that could allow it to strike the U.S. East Coast. The newly obtained evidence points to ongoing work on at least one Hwasong-15 at the Sanumdong plant, according to imagery collected by the National Geospatial-Intelligence Agency in recent weeks.

“We see them going to work, just as before,” said one U.S. official.

The exception, the officials said, is the Sohae Satellite Launching Station on North Korea’s west coast, where workers can be observed dismantling an engine test stand, honoring a promise made to Trump at the summit.

[North Korea seeking to conceal parts of its weapons stockpile, officials say]

A May 28 satellite image of a building that U.S. analysts believe is a secret uranium enrichment facility near North Korea’s capital. (Planet Labs Inc./James Martin Center for Nonproliferation Studies at the Middlebury Institute of International Studies)
Many analysts and independent experts, however, see that dismantling as largely symbolic, since North Korea has successfully launched ICBMs that use the kind of liquid-fueled engines tested at Sohae. Moreover, the test stand could easily be rebuilt within months.

Buttressing the intelligence findings, independent missile experts this week also reported observing activity consistent with missile construction at the Sanumdong plant. The daily movement of supply trucks and other vehicles, as captured by commercial satellite photos, shows that the missile facility “is not dead, by any stretch of the imagination,” said Jeffrey Lewis, director of the East Asia Nonproliferation Program at the James Martin Center for Nonproliferation Studies. The Monterey, Calif., nonprofit group analyzed commercial photos obtained from the satellite imagery firm Planet Labs Inc.


“It’s active. We see shipping containers and vehicles coming and going,” Lewis said of the Sanumdong plant. “This is a facility where they build ICBMs and space-launch vehicles.”

Intriguingly, one image, taken July 7, shows a bright-red covered trailer in a loading area. The trailer appears identical to those used by North Korea in the past to transport ICBMs. How the trailer was being used at the time of the photograph is unclear.

Lewis’s group also published images of a large industrial facility that some U.S. intelligence analysts believe to be the Kangson uranium-enrichment plant. The images, first reported by the online publication the Diplomat, show a football-field-size building surrounded by a high wall, in North Korea’s Chollima-guyok district, southwest of the capital. The complex has a si https://www.dtflanges.com/

Google blasts you with Windows and Mac error messages in new Chromebook

Google isn’t holding back with its latest Chromebook commercial. The minute-long ad blasts you with Windows and macOS error messages, virus warnings, and blue screens of death all in an effort to demonstrate the simplicity of Chrome OS. Google’s message is that its Chromebooks come with virus protection, automatic updates, all-day battery life, and a variety of Android apps. It’s Google’s first clear shot at both Windows and Mac laptops, and it comes nearly five years after Microsoft launched its own attacks at Chromebooks. Forged Flange Suppliers

Most of Google’s criticisms of Windows and macOS would have made more sense years ago, though, as both Microsoft and Apple have addressed many of the infamous problems Google has chosen to highlight. Windows 10 ships with built-in virus protection, automatic updates, and many laptops now offer “all-day” battery life. The strength of Chrome OS is its pure simplicity, and that’s not necessarily demonstrated well in an ad designed to highlight old error messages.

Google’s Chromebook ad timing comes just as laptop makers head into back-to-school season. It’s a chance for Google and others to convince students and teachers to purchase new machines for a new school year. Microsoft is launching its new Surface Go this week which is clearly aimed at students, and Apple has already kicked off its free Beats headphones promotion for select MacBooks.

Google has a strong lead in the US education market thanks to its Chromebooks, and its latest ad suggests it’s ready to battle for even more market share. Chrome OS might not be ready to take on the iPad just yet, but Google keeps proving Chromebooks are ready to go head-to-head with Windows laptops and Macs.

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We sincerely hope to establish long-term cooperation with you for mutual benefits and joint development. www.dtpipefitting.com

High-pressure boiler steel pipe

High-pressure boiler tubes:-Forged Flange Manufacturer
 high-quality carbon structural steels, alloy structural steels, and stainless heat-resisting steel seamless tubes, which are mainly used for the production of high-pressure and high-pressure steam boiler tubes, etc., and these boiler tubes are operated under high temperature and high pressure. In addition, the pipes may be oxidized and corroded under the action of high-temperature flue gas and water vapor. Therefore, the steel pipes are required to have high endurable strength, high oxidation resistance, and good organization stability. The steel grades are: high-quality carbon Structural steel grades are 20G, 20MnG, 25MnG; alloy structural steel grades 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG,

12Cr3MoVSiTiB, etc.; rust heat-resistant steel commonly used 1Cr18Ni9, 1Cr18Ni11Nb high-pressure boiler tubes in addition to ensure chemical composition and mechanical properties In addition, the hydrostatic test should be done one by one, and flaring and flattening tests should be conducted. The steel pipe is delivered in a heat-treated state. In addition, there are certain requirements on the microstructure, grain size, and decarburization layer of the finished steel pipe. Geological drilling and seamless steel tubes for oil drilling control; use drilling rigs to drill wells to ascertain underground rock formations, groundwater, oil, natural gas, and mineral resources. Oil and gas exploitation can not do without drilling wells. The seamless steel pipe used for oil drilling in geological drilling control is the main equipment for drilling, mainly including core outer pipe, core inner pipe, casing, drill pipe and so on. Because the drilling pipe is required to work deep into the depth of a few kilometers, the working conditions are extremely complex. The drill pipe is subjected to stress such as pulling, pressing, bending, torsion, and unbalanced impact loads, and it is also subject to mud and rock wear. Therefore, the pipe is required. Must have sufficient strength, hardness, wear resistance and impact toughness, steel with steel "DZ" (Geological Pinyin initials) plus a number to represent the steel yield point, commonly used steel DZ45 45MnB, 50Mn; 40Mn2, 40Mn2Si of DZ50; 40Mn2Mo, 40MnVB of DZ55; 40MnMoB of DZ60; 27MnMoVB of DZ65. Steel pipes are delivered in a heat-treated state. Petroleum Cracking Pipes: Seamless tubes for furnace tubes, heat exchanger tubes, and pipes used in oil refineries. Commonly used high-quality carbon steel (10,20), alloy steel (12CrMo, 15CrMo), heat-resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti) manufacturing. In addition to the chemical composition and various mechanical properties of the steel pipe, it is also necessary to ensure that the water pressure, flattening, flaring and other tests, as well as the surface quality and non-destructive testing. Steel pipes are delivered under heat treatment. Stainless steel pipe: It is hot-rolled and cold-rolled stainless steel pipes of various stainless steels. It is widely used in petroleum and chemical equipment pipelines and stainless steel structural parts for various purposes. In addition to ensuring chemical composition and mechanical properties, it is used as a steel pipe to withstand fluid pressure. To ensure that the water pressure test qualified. All kinds of special steel pipes should be guaranteed by the regulations.
Welded steel pipe: Also called welded pipe, it is formed by bending steel plate or strip and then welded. Divided into straight seam welded pipe and spiral welded pipe.