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/