EN ISO 3834-2 – The perfect piece for World Steel’s quality management system

ISO 3834-2 is an international standard for quality management systems in welds for companies operating in the welding field. It is part of the ISO 3834 series of standards, developed by the International Organization for Standardization (ISO) and applicable to welding in various industries.

The ISO 3834 series of standards – Quality requirements for fusion welding of metallic materials, issued in 2005, includes the following Standards:

  • ISO 3834-1: Criteria for the selection of the appropriate level of quality requirements
  • ISO 3834-2: Comprehensive quality requirements
  • ISO 3834-3: Standard quality requirements
  • ISO 3834-4: Elementary quality requirements
  • ISO 3834-5: Necessary documents to be followed to conform to the above quality requirements

ISO 3834-2 certificate is the highest level of certificate when evaluating the welding quality management system of a manufacturing company. This is the comprehensive level. And at this level, our welding quality management system is recognized as suitable for manufacturing steel structures and products with welded joints from the simplest to the most complex according to ISO standards. Here is the notable range of weld seam quality that EN ISO 3834-2 certificate recognizes:

When receiving the ISO 3834-2 certificate from a reputable organization like BV Viet Nam, it also means that World Steel's steel structure factory is facing opportunities and challenges:


That is, we are independently validated for our perfection in welding operations and manufacturing capacity in the field of specific mechanical manufacturing. Enhance domestic and international competitiveness by demonstrating compliance with welding quality requirements with internationally recognized standards. Meet the requirements of investors when participating in bidding because ISO 3834 is often used as a mandatory requirement in processing and manufacturing contracts by welding methods in the EU and many industrialized countries.


Because we must always improve and strive continuously to meet and maintain the strict requirements of ISO 3834 standards as well as our commitment to providing customers with the best products and services. And we believe we can do it to the best of our ability.

Achieving ISO 3834-2 certificate proves that World Steel complies with the processes, methods and technical requirements to ensure the quality of welded structures, producing products that meet high-quality standards. This ensures that World Steel is capable of providing high-quality, reliable and safe welding products to clients. ISO 3834-2 certificate also confirms World Steel’s technical competence in performing welding processes. It proves that the company has employees with enough knowledge and skills to perform high-quality welding jobs. Choosing World Steel can bring peace of mind and confidence in working with a highly capable and reliable supplier in the welding field.

Bureau Veritas Viet Nam (a member company of the Bureau Veritas group, founded in 1828 in Belgium, operating in 140 countries) is a leading company in the field of providing inspection, certificate and consulting services on quality, safety, environment and society. In the field of certificate, the company provides certificate services for quality management systems (ISO 9001), environmental management (ISO 14001), occupational safety and health (ISO 45001), and many other standards. With more than 190 years of experience and a global network, Bureau Veritas has built a reputation and reliability in assessing and confirming compliance with leading standards and regulations.

Besides EN ISO 3834-2, let’s take a look at World Steel’s quality management system:

  • ISO 9001
  • ISO 14001
  • ISO 45001

IAS AC472 (World Steel is the only company in Viet Nam and Asia to achieve this quality certificate until of November 2023)

Since 2012, World Steel has been a leading industrial construction contractor in Viet Nam in the field of professional industrial construction with hundreds of large-scale and majestic projects completed in all industrial parks in Viet Nam. In addition, with the Export market, for many years, World Steel is a reputable manufacturer and supplier of high-quality steel structure products and pre-engineered steel buildings, a destination for many general international construction contractors in foreign markets.

Besides IAS AC472, the addition of ISO 3834-2 to the company’s quality management system is the clearest proof of the development and continuous improvement of quality, to bring the best products to customers and the market.

Topping Out Ceremony Of Hai Duong Sheng Long Aquatic Food Factory Project

On October 12, 2023, with the participation of representatives of the EPC contractor – WorldSteel Group and representatives of the investor and related units, the topping-out ceremony of the Hai Duong Sheng Long Aquatic Food Factory Project took place at Cong Hoa Industrial Park, Chi Linh, Hai Duong. The project is invested by Hai Duong Sheng Long Bio-tech International Co., Ltd. and WorldSteel Group takes on the role of EPC contractor. Hai Duong Sheng Long Aquatic Food Factory is an important and representative project in the field of aquatic feed in the Northern region.

The factory was built on an area of 52,000m², including many important items such as raw material warehouses A1+A2, finished product warehouse, packaging warehouse, office building, parking lot and infrastructure for the manufacturing plant. WorldSteel Group is responsible for designing and constructing the entire project, including MEP items.


  • Project: Sheng Long aquatic food factory project
  • Investor: Hai Duong Sheng Long Bio-tech International Co., Ltd
  • EPC Contractor: WorldSteel Group
  • Field: Agriculture
  • Area: 52,000m²
  • Location: Cong Hoa Industrial Park, Chi Linh, Hai Duong

Construction progress is being focused on accelerating to ensure project completion according to the proposed plan. The goal is to bring the project into operation on schedule, with quality and optimize value for the investor. The topping out ceremony is an important occasion to celebrate the completion of this important phase of construction. From here, the project will continue to implement the remaining stages to be completely completed and ready for production activities.


World Steel Cup 2023 closing and awards ceremony

After more than 3 weeks of active and exciting competition, the World Steel Cup 2023 football tournament ended with the final match on August 26, 2023, the final results were as follows:

  • Best player of the tournament: Nguyen Minh Dat (HD SAISON)
  • Best goalkeeper of the tournament: Nguyen Trong Hieu (HCMC STEEL CLUB)

The closing and awards ceremony of the World Steel Cup 2023 took place on the same day, with the presence of representatives from the organizing unit – World Steel Construction Joint Stock Company, 10 teams participating in the tournament and hundreds of fans and spectators supporting this event.

The WorldSteel Cup 2023 tournament kicks off from August 12 to August 27, 2023 with the participation of teams from the following units:


  • World Steel Construction Joint Stock Company – Office Team
  • HCMC Steel Club Team
  • Vietland Real Estate Investment Joint Stock Company Team
  • SMC Trading Investment Joint Stock Company Team
  • Khai Nguyen Joint Stock Company Team


  • World Steel Construction Joint Stock Company – Factory Team
  • HD SAISON Finance Co.,Ltd
  • Nguyen Phuong Insulation Co., Ltd.
  • Chuong Duong Beverages Joint Stock Company
  • NETPA Production Trading Import Export Co., Ltd.


WorldSteel Group’s 11 ͭ ͪ birthday celebration party

On the evening of August 26, 2023, WorldSteel Group’s 11th birthday celebration party was held at Kalina Tan Phu. The party took place in a warm and intimate atmosphere between the Board of Directors and all employees of the WorldSteel Group family. Besides, the event also had the presence of guests who are clients, close partners of World Steel, and representatives of teams participating in the 2023 World Steel Cup football tournament.

Established on August 28, 2012, through the process of non-stop development, WorldSteel Group has so far become a pioneer and leading prestigious unit in the field of industrial construction contractors in Vietnam, we have performed many large and small projects, spreading from South to North. Reaching out further to potential markets such as the US, Australia, Southeast Asian countries (Thailand, Myanmar, Indonesia, Philippines, Cambodia,…) with hundreds of steel structure export projects. This is the clearest evidence for the increasingly strong development of WorldSteel Group.

WorldSteel Group is gradually becoming more mature day by day, with the theme “UNITY TEAM – SUCCESSFUL ORGANIZATION”, the Company’s Board of Directors has shared enthusiasm and motivation to the employee collective. The road ahead still has many thorns, difficulties and challenges, hope that the World Steel collective will always unite, make efforts to dedicate together to bring World Steel further and stronger.


WorldSteel Group Re-Achieves IAS AC472 Certificates – The 5th Time

On May 23-25, 2023, WorldSteel Group honored to welcome Mr. Joseph Kingtons, the representative from Smith Emery Laboratories to World Steel, performs verification and inspection work at the manufacturing factory.

This is essential work to confirm that the World Steel factory has comprehensive quality assurance procedures in accordance with the IAS AC472 certificate criteria – the leading quality assessment standard currently recognized by the US MBMA (MBMA: The abbreviation of the American “Metal Building Manufacturers Association”).

Refer to other articles about AC472:


IAS AC472 is a complete quality control assessment management process system specifically for steel structure manufacturing companies, accredited by MBMA – Metal Building Manufacturers Association and ICC – International Code Council.

IAS AC472 is important not only for works manufactured and constructed by Steel Structures for the world’s No. 1 advanced country like the US. AC472 is the “Passport” for non-US steel structure manufacturers who want to officially export structural steel products to this market, requiring AC472 quality certificate.

In the US, AC472 Certificate for steel structure constructions, projects ensures that all products comply with the design, construction, and fabrication process in accordance with quality standards and evaluated by an independent third party. Investors using products and services from manufacturers and companies producing pre-engineered steel buildings with AC472 certificate will be assured of quality. A steel building manufactured according to AC472 standard will receive the following benefits:

  • Pre-engineered steel building projects manufactured on the basis of AC472 will be granted construction permits faster.
  • The durability and safety of steel buildings according to AC472 standards will be higher.
  • The cost of buying insurance for the works is lower.
  • Maintenance cost for steel building system will be lower.
  • The commercial value of these works is higher.

About the IAS AC472 Certificate Authority:

  • AC472 is overseen by the International Accreditation Service (IAS), which is a wholly owned subsidiary of the International Code Council (ICC).
  • This body evaluates and accredits building departments, special inspection bodies, testing and calibration laboratories.
  • Official website: https://iasonline.org.

About the company representing IAS performing Audit activities, Smith Emery Laboratories:

  • Smith Emery Laboratories is the partner representing IAS AC742 to evaluate World Steel’s system every 6 months in Vietnam.
  • Is an American company with a history of over 100 years, since 1904.
  • Smith Emery Laboratories is one of the leading US companies in the field, with offices in many countries and regions: USA, Canada, North America, China, etc.



  • The IAS AC472 certificate is valid for 12 months.
  • According to regulations from the IAS, companies like World Steel must undergo at least 2 audits per year, each 6 months apart.
  • The results of these times will determine whether this certificate can be extended or not.

IAS AC472 is an important certificate with very high quality assessment standards. The certificate is not only for companies wishing to export steel structures to the US market, but more importantly, it shows the capacity and strengths of World Steel. The re-accreditation of IAS AC472 is a proof that all of World Steel’s systems are being operated and controlled in the most rigorous manner.

World Steel is proud to be the first and only company in Asia to achieve IAS AC472 certificate. With IAS AC472 certificate, World Steel is the first Vietnamese company to have a license to export pre-engineered steel to the US. World Steel is growing stronger and reaching out from Vietnam, contributing to building the reputation of Vietnam’s steel structure industry and the international market that WorldSteel Group has been conquering.

Capacity of World Steel factory in Steel Structure projects

Built in Hai Son Expanded Industrial Park, Duc Hoa, Long An, WorldSteel Group factory has a total area of more than 20,000m² and has a total production capacity of over 2000 tons of steel structures/month.

World Steel Factory is proud to possess high-quality human resources: We gather a team of domestic and international technical experts who are knowledgeable and specialized in steel structure products along with a team of well-trained, technical and skilled workers.

Professional and synchronous equipment and machinery system: Shearing machine, CNC drilling machine, CNC plasma cutting machine, Automatic beam welding line for light and heavy structures, Beam straightening machine, Automatic shot/grit blasting machine, Shot/grit blasting booth, etc.

The factory is equipped with an intensive quality management system IAS AC472 for steel structure products that meet American quality standards.


  • At World Steel, the Investor will receive the most detailed advice on their project from all activities and angles: Legal consulting activities, planning, detailed project design, production and construction. We are among the few EPC General Contractors that can provide a complete suite of solutions, complete implementation, bring a seamless experience to your project from the leading experts in the industry.
  • Advanced quality management system for the system to operate and ensure homogeneity, fully fulfill commitments on product quality: AS Standard (Australian Standard), ISO 9001, ISO 45001, IAS AC472 (We are the first and only Vietnamese company to achieve this certificate).
  • The factory with a capacity of 2000 tons/month is equipped with professional and modern equipment and machinery.
  • Hundreds of investors and clients are leading companies and corporations in Vietnam such as: Hoa Phat, Sunpro Steel, Hai Dai Group, GPPD, Tongwei Group, SCG, Long Son Petrochemical, MFC, Le Tran, CP, Tan Hiep Phat Group, Sun Tech,… in many fields, many industries choose World Steel to implement the projects. Successful projects not only in domestic and international markets are highly appreciated by clients for quality: Tien Giang Tongwei, Hai Duong Tongwei, Binh Phuoc GPPD Factory, Binh Phuoc CPV Food, Dung Quat Hoa Phat, Sunpro steel mill, Coca Cola warehouse (Philippines), 7-Eleven (Thailand), Kanata (Myanmar), GreedFeed (Cambodia),… You can refer here.
  • Many demanding international markets (USA, Australia,…) have chosen World Steel’s steel structure products because our products are superior in quality.
  • Warranty policies and activities on finished project products are carried out methodically and professionally.
  • Optimal price with excellent design solutions.


Our team of experts is always ready to advise you in detail for your project, please leave your information here:

Application Groups Of Pre-Engineered Steel Buildings & Steel Structures In The Construction Industry

Pre-engineered steel buildings and steel structures are advanced and popular construction solutions in the construction industry today, widely applied in industrial, commercial and civil works, including factories, high-rise buildings, bridges and other infrastructure works.

Pre-engineered steel buildings and steel structures have many benefits, including flexibility, fast construction speed, good bearing capacity, ease of maintenance and repair, high aesthetics as well as reusability and environmental friendliness. You can refer to the previous article here: 6 amazing advantages of steel structure for construction works.

Therefore, they are becoming a popular choice for many investors and contractors in the construction industry.


Typical projects such as: workshops, factories, warehouses, cold storages, steel mills, assemby plants, steel structure systems for petrochemical projects, etc.


Typical projects such as: greenhouses, livestock farms, fertilizer factories, animal feed factories, etc.


Typical projects such as: fair – exhibition centers, supermarkets/hypermarkets, shopping centers, restaurants, commercial complexes, gas stations, etc.


Typical projects such as: hospitals, schools, airport terminals, railway stations,…


Typical projects such as: sports centers, gymnasiums, swimming pools, stadiums, etc.

Featured projects we have worked on:

Our team of experts is ready to advise on products and solutions for your project.

6 Amazing Advantages Of Steel Structure For Construction Works


Steel structures are pre-fabricated at the factory and then transported to the construction site and erected by bolts, so the construction time is shortened to only about 1/3 compared to the construction time of traditional concrete houses, helping the project to be quickly put into use.


Pre-engineered steel buildings claim to exceed large spans up to 100m, pre-engineered steel buildings can be flexibly applied in many projects, especially commercial centers, exhibition centers, airports,…


Because of the lightweight of steel buildings, lighter foundation requirements result in significant cost reductions. In addition, the shortened construction period greatly reduces labor costs at the construction site.


The components of the steel building are linked together through bolts and pre-designed connection faces, so the expansion is flexible and does not take much time and cost.


Reduce the load pressure on the foundation compared to traditional concrete construction. In addition, with a lightweight structural frame system, help to limit the effects of seismic problems.


Pre-engineered steel buildings are suitable for many types of finishing materials such as corrugated iron, wood, glass, brick, etc.

Hundreds of projects are used by WorldSteel Group with this solution to implement in Vietnam and international markets. Refer here: Our Project.

Our team is ready to advise your project. Leave project information here.

IAS AC472 – The Only Quality Management System For World Steel Steel Structure Products In Vietnam


IAS AC472 is a specialized quality management system specific to the Steel Structure industry recognized by MBMA (MBMA: Metal Building Manufacturers Association of America) and ICC.

IAS AC472 is important not only for works manufactured and constructed by Steel Structures for the world’s No. 1 advanced country like the US. AC472 is the “Passport” for non-US structural steel manufacturers who want to officially export Steel Structure products to this market, requiring AC472 quality certificate.


Unlike many other certificates, a successful inspection for the AC472 certificate is really difficult. To achieve this, the company must first have a team of professional personnel and a methodical operating system. When evaluating the system, people often refer to ISO, but here in the steel structure industry, IAS AC472 is much more than that, is an intensive system, specialized for the field of steel structure production. Only businesses that care about sustainable development: consciousness in sustainable, long-lasting quality products, then focus on investing a lot of money and enthusiasm for systems like this or similar.

In the steel structure manufacturing industry, surely we all know MBMA (MBMA: Metal Building Manufacturers Association of America was established in 1956), or we can also call MBMA the birthplace of the industry (a lot of related standards are being developed and upgraded by this prestigious international organization), which creates standard systems, defines and sets many standards for the pre-engineered steel structure industry. One of the mandatory criteria to join this prestigious association is to achieve AC472 (with only this, we can imagine how prestigious and important AC472 is to the field of Steel Structures in the US).


  • Will get approval for building permits faster.
  • The durability and safety of steel buildings according to AC472 standards will be higher.
  • The cost of buying insurance for works is lower.
  • The maintenance cost for the steel building system will be lower.
  • The commercial value of these works is higher.

For these reasons, the annual achievement and maintenance of the IAS AC472 certificate is a great pride of the World Steel team. That proves that the execution capacity of WS is always ready to meet all criteria, the most complex requirements of every project from clients.

Every year, WORLD STEEL has to undergo 2 periodic reviews of this certificate by the IAS representative from the US, then experts from the US will come to Vietnam to conduct the evaluation. So, what will these AC472 experts evaluate and do: Does this evaluation process stop within the departments and the World Steel plant?

It is a list of many criteria, a detailed evaluation process of the quality management system according to this certificate will include a detailed evaluation system for all essential activities to make the product, from the initial stage of receiving information until the product is completed at the Company:

  • The initial departments, from sales, design, purchasing, human resources, training, project management.
  • Manufacturing plant: departments related to production process assurance activities: maintenance, production, quality.
  • External affiliates (if any): outsourcing subcontractors, outsourced product suppliers.

Who is the representative partner of IAS AC472 in the annual World Steel evaluation? It is Smith Emery Laboratories, one of the leading US companies in the field, established in 1904 with a history of more than 100 years of development in the evaluation and inspection of the quality system in-depth. It has operating offices in many regions in the US, Beijing and Canada. Smith Emery Laboratories is the representative partner for IAS AC742 to evaluate World Steel’s system every 6 months in Vietnam.

IAS AC472 certificate is considered a prestigious authentication basis for businesses to export their products to the US market.

Along with investing in a high-class IAS AC472 product quality management system for steel structure products, World Steel is orienting and striving to become one of the high-quality enterprises trading in steel structures in the global market: Currently, World Steel’s products are available in many countries in Southeast Asia with a very large volume being exported every year to the markets: Thailand, Philippines, Indonesia, Laos, Cambodia, Australia, and the most special is the US market (USA is the most difficult market in all markets with extremely high requirements, WS is the only company in Vietnam that can officially export Steel Structures to this market).

Through many years of establishment and development, World Steel has been building more and more perfect a professional factory with a team of senior technical personnel. We are also extremely proud that WS’s working environment is also home to leading international experts in the Steel Structure industry. Everything here is always ready: an international quality management system, international high-tech personnel, a professional factory, skilled Vietnamese workers bring perfect quality steel structure products to the market.

In addition, in January 2023, World Steel also inaugurated a new office building which has been invested in a large and methodical manner, providing the best working conditions for staff. The standardization of the factory and quality process according to the IAS AC472 standard system is not only for Vietnam, but is the strategic vision of sustainable and long-term development of the founder with the main pillar being “Premium” product quality as the center.

World Steel office building in Long An, located at Lot Q9-10-15-16, St. No.7, Hai Son Expanded Industrial Park, Duc Hoa Ha Commune, Duc Hoa District, Long An Province.

We aim to serve and bring the best American quality steel structure products to the international market, along with a superior local understanding solution, reasonable prices, optimizing costs for investors, construction contractors in Vietnam and many countries around the world.

WorldSteel Group – Inauguration ceremony of the second new office building in Long An

On the afternoon of January 14, 2023, the inauguration ceremony of the second office building in Long An of WorldSteel Group took place very solemnly, marking a strong turning point in the development journey of World Steel. Long An WorldSteel Group Building is located at Lot Q9-10-15-16, St. No.7, Hai Son Industrial Park (Phase 3+4), Duc Hoa Ha Commune, Duc Hoa District, Long An Province.

In 10 years of establishment and development, World Steel has resonated in the industrial construction industry with many industrial construction general contractor projects in Vietnam, notably with projects in many industrial parks from North to South. Among them are prominent projects such as the General Contractor of Tien Giang Tongwei project, Hai Duong Tongwei belonging to Tongwei Group, Hau Giang Sunpro Steel complex project, Tay Ninh Brotex yarn factory project Phase 3+4, the General contractor of the advanced battery factory complex project invested by Singapore GPPD Energy Co., Ltd in Binh Phuoc, many bidding packages at Dung Quat – Quang Ngai Hoa Phat project,…

Along with that, there are national key projects: World Steel participates in the Long Son petrochemical project with the package H&I-8 warehouse 2 along with promoting the export of steel structures to foreign markets, especially in Southeast Asia: Thailand, Philippines, Indonesia, Myanmar, Australia, USA, etc. Among them, World Steel is most proud of the US market. Up to now, we are also the first company in Vietnam and Asia to achieve the AC472 certificate, a quality management system for official steel structure products to be exported to the US market.

In 2019, marking a remarkable development and transformation process is the event that World Steel’s first office building was built at 55 Le Thuc Hoach, Phu Tho Hoa, Tan Phu District, Ho Chi Minh City.

After only a short time with sustainable development orientation and goals, we have affirmed our reputation in the market and received the trust of hundreds of partners, clients who are foreign corporations, leading companies in Vietnam when acting as the General Contractor of a series of large industrial construction projects, exporting many steel structure projects to the international market. The great development of WorldSteel Group in recent years has led to the growth of the human resources apparatus, along with the requirement for a new working space. Determining that the Company’s greatest asset is people, the Board of Directors has advocated building a large-scale headquarters, not only to expand business activities but also to create a convenient, comfortable environment, stimulating creativity for employees.

With the enthusiasm of the team, the Building is completely designed with steel structure solutions, manufactured by World Steel Long An factory itself. The completion of the project in a short time from the design, production and construction stages has partly demonstrated the superiority of the steel structure solution that the company brings to the construction market. The building is cared for in every detail, completed with full functions, multi-utilities: open workspace, green landscape, park, many relaxation areas. The biggest desire of the Board of Directors is: WorldSteel Group Long An becomes a true “second home” so that all employees can work with peace of mind and be happy with their workplace.

Mr. Nguyen Khanh Lam – Chairman of the Board of Directors, General Director spoke at the ceremony.

At the ceremony, Mr. Nguyen Khanh Lam – Founder, Chairman and General Director of the company shared and answered the questions of hundreds of partners and clients: Why does World Steel make investment while the general picture of the construction industry is not very positive? Mr. Nguyen Khanh Lam affirmed that the investment is in the direction of World Steel for many years of establishment, focusing and reaffirming the company’s sustainable development strategy is the strongest evidence for perseverance with the goals set by the company. Besides, 2022 is also the year witnessing the company’s rapid development in both domestic and foreign markets with many large and key projects implemented and completed. The office building in Long An prioritizes focusing on the operation team with the desire to respond quickly and promptly to activities related to production and quality, to respond quickly to the needs of domestic and international clients.

Mr. Pham Van Triem - Chairman of the Board of Directors of Tan Phuoc Thinh spoke at the Inauguration Ceremony of World Steel Long An building

Below are the opening photos of WorldSteel Group's new building:

The inauguration ceremony took place in the joy of the entire Board of Directors and employees of the Company (representatives of members in the system)

The Board of Directors and distinguished guests cut the ribbon to inaugurate the building

World Steel Long An Building is the pride of World Steel People


The press shared about the inauguration ceremony of the WorldSteel Group office building in Long An