Butt welding flange production details

The butt welded flange connection is convenient to use and can bear relatively large resistance. For 304 butt welding flanges, the processing materials are not the same according to the different levels of resistance, from low-voltage asbestos gaskets, high-voltage asbestos gaskets to metal gaskets.

In the actual processing and development of the welding flange, the use of different forms and processes to carry out processing and processing, according to the form and working principle of the process, can produce important value and effect on different levels, and add the corresponding factors in the actual processing, and then increase the characteristics and value of carbon steel flange, reflecting the better use characteristics and value.

In the specific production process, the corresponding performance parameters and regulations are used to carry out processing and application, to ensure that the correct use and promotion can be carried out in accordance with the corresponding form and working principle, while the corresponding process form and working principle are used to carry out processing and welding, to ensure the reliable quality of the butt welded flange in use.

It is necessary to cut the steel into strips along the rolling direction and butt weld it into a circular ring according to the bending process. At the same time, the steel surface should be generated with a ring cylinder, and the steel plate material can not be machined into butt welded flange with neck.

Technical knowledge of butt welding flange

The butt welded flange is manufactured by forging or forging rolling technology. And if you want to use steel plate or steel material for manufacturing, it must meet these requirements. The butt welded flange must be tested by ultrasonic inspection, and there should be no layered defects after inspection.

It is necessary to cut the steel into strips along the rolling direction, weld it into a circular ring through the bending process, and at the same time, the steel surface is formed into a ring cylinder, and the steel plate material can not be machined into a butt welded flange with neck.

For the butt weld of the ring, it is necessary to adopt the form of full penetration weld, and the butt weld of the ring must be subjected to post-welding heat treatment, and at the same time, 100% ray or ultrasonic flaw detection test should be carried out

And the radiographic inspection results should meet the requirements of JB4730 Level II, and the ultrasonic inspection results of welded flanges must meet the requirements of JB4730 Level I standards

Slip on flange order

Slip-on flange is slipped over the pipe and then fillet welded. Slip-on flanges are easy to use in fabricated applications. The standards frequently followed as below:
ASME/ANSI B16.5 Class 150 SO/Class 300/Class 600/Class 900
BS 3293 Class 150 SO/Class 300/Class 600
DIN 86029 PN 10

Material of sliding (Slip on) flange:

The stock of slip pipe flanges includes AWWA, ANSI, pressure vessel, and slip pipe flanges matching ASME flange diameters and boreholes.

Carbon Steel: A105, A350 LF2
Stainless steel: A182 F304 F304L/F316 / F316L/F321
Alloy steel: F11, F12

Advantages of sliding (slip on) flange:

Low-cost installation
Less time is required to ensure the accuracy of pipe cutting
They’re easier to align
Because the pipe slides into the flange before welding, the hub of the sliding flange is lower
Flanges are welded inside and out to provide sufficient strength
They can prevent leaks

Test flange (Blind flange) order

Blind flange is a kind of circular plate, which has all relevant holes, but no central hole. Due to this characteristic, this flange is used to close the end of the piping system and the opening of the pressure vessel. Once the pipeline is closed and must be reopened, it can easily enter the interior of the pipeline or vessel.

Blind flanges are used for closed ends of piping systems. It is a circular plate without central support, but with all suitable bolt holes. This blind flange is available in various sizes and materials to provide positive closure at the end of pipes, valves or equipment nozzles. Once the pipe is sealed, this flange facilitates easy access to the pipe. Blind flanges are sometimes customized or machined to accept nominal size pipes and bend them.

In this tender, one of main products is steel pipe API 5L Gr.B with big diameters. API 5L Gr.B is the lowest steel grade of line pipe which usually used in the oil and gas pipe system. The other two main products are carbon steel pipe fittings and flanges, they are all very important components in the pipe systems which play the roles to connect pipes.

Emerson Automation Solutions is a transnational enterprise from America. It has many branches companies all over the world. Emerson Brazil is one branch company of Emerson. Metleader is already one supplier of Emerson Singapore and naturally we also received the enquiry about carbon steel pipe fittings and flanges from Emerson Brazil.

The new enquiry from Emerson Brazil are about Carbon steel welding neck flanges. These CS flanges will be applied to the construction of the project City Gate. The material is ASMT a105, and the production standard is AME B16.5. Emerson usually has very high and strictly requests for the quality. However, our quality has been confirmed in the first order was placed by Singapore. So we have enough ability and confidence to supply Emerson Brazil the flanges with good quality.

The production department informed the sales department that they could advance the delivery. The fact that we are able to deliver early during peak production seasons shows that our production department has done an excellent job of upgrading parts of the production and packaging process. In the future, if you have an urgent order, please contact us. We use the most efficient production process to ensure the shortest lead time.

About the A105 material:

A105 is low carbon steel forgings, A105 is American ASTM standard, A stands for common carbon structural steel. Standard name: carbon steel forgings for pipe parts. Since the standard specifies only one carbon steel forgings, A105 is even a forged carbon steel grade. A105 is also the material code. It belongs to special steel and is cold forged steel.

Abu Dhabi Oil Company (Japan), ADOC, operates Three (3) Oil Fields, namely Mubarraz, Umm Al Anbar and Neewat Al Galan. In addition to the existing operations, ADOC developed the Hail Field located around 10km south of Mubarraz (MUB) Island.

The equipments in the three oil field has been very old and the spare are no more available. Due to lack of reliability resulting from not obtaining sufficient spares and technical support from OEMs, ADOC intends to replace these existing diesel generators with new equipment.

Now this project is in the engineering and design stage with an objective of performing early decision study and carrying out the engineering and design for purpose of execution stage tendering.

Metleader is invited to take part in the early tender of piping materials

Metleader is invited to take part in the early tender of piping materials refer to pipes, fittings, flanges, gasket and stud bolt. The material of products are carbon steel and alloy steel. Abu Dhabi Oil Company as a very famous international enterprise has very high requirements for the technology and quality. However Metleader has enough ability and experience for quoting and supplying these materials because in the passed decades of years Metleader jointed many big overseas projects for supplying piping products.

In order to improve the safety awareness and operation skills of the whole staff, ensure that employees have the knowledge of safety production needed for their own work, master the rules and regulations of safety production and safety operation rules skillfully, and prevent the occurrence of safety accidents. On the afternoon of January 10, the company held the first quarter of 2019 full safety rotation training.

Nicole, the general manager of the company, presided over the training. The comprehensive department was responsible for the training organization. The production department was responsible for the implementation of the safety training. All units attached great importance to it, carefully organized and implemented it, actively cooperated with the development of the training work, and the training process was carried out strictly in accordance with the plan. The training mainly focuses on safety production laws and regulations, personal safety protection, equipment use safety, temporary power consumption and so on; combined with the company’s past real cases, to analyze the causes of accidents for employees, to educate people to prevent accidents in the future, and to improve the awareness and ability of accident prevention. At the same time, the security officer gives a detailed explanation, informing the corresponding measures to be taken under various unexpected circumstances, so that everyone can learn to improve safety awareness in their daily work and life, and play the song of life safety.

The safety production training has been unanimously recognized by the vast number of employees, which provides a strong guarantee for the realization of the company’s goal of “zero accidents in safety production throughout the year”.

Since May this year has been nearly half a year of time, colleagues help me to learn product knowledge, including if check pipe fittings and flanges of the standard, weight, size and so on. will also go to the factory production workshop to learn to watch pipe fittings and flanges of the production process, understand the flange, pipe from raw materials to the finished product of a process.

Study a week of products know, to our products have some general understanding, foreign Trade manager will not regularly divided my customers let me study follow-up. The weekly meeting will identify the issues that the customer is tracking during the week, discuss the university, and then communicate with the customer again. Our company is a very friendly company, colleagues help each other and grow. In the company nearly half a year to finally successfully sell 50 tons of pipe fittings and flange products. In this nearly half a year I have been discouraged to give up, are colleagues and managers to encourage me to give me confidence.
So that I can recognize myself. Foreign trade manager once told me: This is your first foreign trade work, if you give up then you may be out of the foreign trade industry. Yes, I have to admit that the first job in life is very important.Customers are ordered to complete the production of products, customers to factory acceptance products.

She decided that one of your work directions and your four years of college life is not a waste of time. I am very grateful to our company and managers with their colleagues, I hope that our company will be more and more good, and strive to make themselves more and more good. Come on!!

Company’s introduction
This is a national top oil pressure, rolling ring, security, physical and chemical, flaw detection and other technical personnel and many years engaged in forging processing, machining and other skilled staff team, and has a strong production management, equipment operation, operating operations, has an international vision of the marketing team of the national well-known private enterprises. The company was founded in 1982, the registered capital of 150 million yuan.At present, the company’s total assets of 450 million yuan, covers an area of 197.6 acres, the existing staff of 450 people, is the national professional production of wind power flange, one of the large enterprises.

The strength of the company
The company was founded, from home and abroad to introduce advanced digital manufacturing equipment, including CNC oil pressure, ring machine, CNC machine tools, after the introduction, digestion, absorption, and innovation of the process, the successful application of large forgings at that time to the manufacture of a variety of large flange manufacturing. From raw materials into the factory, production process to the finished factory all aspects of the whole process of quality control, the quality of the responsibility to decompose into each link, the implementation of quality control analysis, the key process to set up quality control points, quality control staff strictly to ensure that the quality of the production process is always in a controllable state, Ensure that each unit has a record of original authenticity, ensuring the steady improvement of product quality.

At the same time, constantly improve the company’s quality system construction, built-in quality system management departments, quality inspection agencies, equipped with professional and product testing equipment, and has advanced quality inspection means. 2010, the company built physical and chemical testing center, with more than 20 physical and chemical equipment, the following year through the National Quality and technical supervision of the CMA Metrology certification, 2013 achieved the National CNAS Accreditation certificate, become the region’s only tripartite testing center.In June, the physics and Chemistry laboratory became the designated laboratory of entry-Exit inspection and Quarantine Bureau.

The company’s philosophy
Innovation, is the soul of the enterprise, is the core competitiveness of the brand. In the past few years, in the county county government to create a comprehensive deepening of the reform of the big environment.The enthusiasm of Metleader company’s independent innovation is stimulated comprehensively, and it is a way to surmount the development of science and technology innovation.Innovation, always from small start, from the fine place.
Through technology research and technological innovation, the company’s core competitiveness has been enhanced, and realized from the traditional manufacturing enterprises to the digital refinement of innovative enterprises, to achieve from the decentralized technology to customer-centric, to provide customers with the whole process, a package of services change.

Company’s Purpose
The brand relies on the quality, the quality relies on the technology, the technology relies on the talented person. Metleader’s success, the core is “talent strategy” to win. How to attract, retain, use well, build talent “Highland”, is “Metleader” to win the market secret, but also its bigger and stronger source power.
The company fully implement the strategy of talent strong enterprise, promote the “high-end talent by the introduction, intermediate talent by help, skilled personnel by training” talent use strategy, and improve the absorption of cultivation, good talent mechanism. At the same time, take the system construction as the core, by the characteristic enterprise culture condenses the human heart. In the “Unity and fraternity, and create a total win” and other ideas on the basis of the promotion of corporate culture and quality, so that it becomes metleader constantly enterprising inexhaustible power and spiritual wealth. The formation of a concerted effort, the group of sincere, let Tianbao this ship every staff are escorted to the ideal shore, the realization of life value.