Growth Through Better Service
Fabrication and Construction of Steel Structure, Pressure Vessel, Boiler & Heat Exchanger
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Our Steel Construction Services experienced in many years became the value added for building owner when they have a plan to design and build the steel construction. We have capabilities to perform the value engineering, preparing shop drawing, fabrication and erection for :
- Industrial Building ( Factory, Warehouse, Workshop, Supporting Facilities )
- Commercial Building ( Mall, Office, Hotel, Apartment, Retailer Building )
- Infrastructure Facilities ( Bridge )
- Resources & Energy ( Oil & Gas, Mining, Conveyor )
We have a capability to provide design and engineering, procurement, quality assurance, fabrication & installation as well as service maintenance for the products as follows :
- Pressure Vessel base to the ASME standard
- Heat Exchanger with TEMA standard
- Boiler base to the ASME standard
- Storage Tank base to API 650 standard
- Spherical Tank base to the ASME standard
- Piping Works
- Gas Metering System
We can provide the special equipments consist of :
- Hurry Melter Furnace ( 250 kg - 2,500 kg capacity per hour )
- Holding Furnace ( 500 kg - 3,000 kg capacity )
- Service Car
- Agricultural Machineries
We have a good experienced in EPC ( Engineering Procurement and Construction ) for the project as :
- LPG Plant
- Glycol Dehydration Unit ( Package )
- Well Testing Unit
- Other Oil & Gas facilities
Our culture rewards the attainment of the highest standards in time, cost, quality, safety and environment management. Thus, the people of Gerbang Saranabaja continue to grow, accomplish and get the things done.
Our services include:
- Planning :
1. Scheduling
2. Procurement
- Engineering :
1. Design & Calculation
2. Shop Drawing
- Fabrication :
1. Preparation
2. Marking & Cutting
3. Assembling
4. Forming
5. Welding
- Inspection & Test
- Sandblasting, Painting & Oven
- Packing
- Delivery
- Installation
We think forward to grow the business as investor in Oil & Gas Facilities, therefore, we always open to have discussion with related parties for mutual benefit of investment.
About Gerbang Saranabaja
Board of Director
Organization Structure
Business Partners

In 1976, Mr. Sanjaya (the owner) has an initiative to start a steel construction business under the name CV. Jaya Raya. In the beginning it undertakes the function of steel fabrication for simple and light construction due to limited workshop facilities.


Through hard work and consistency in quality, we are able to improve gradually our facilities so that we can receive and perform more and more complicated and heavy structures for buildings and other purposes.

After 16 years of experience and knowledge in the steel fabrication business, we change the name legally from CV. Jaya Raya to PT. Gerbang Saranabaja (abbr. PT. GSB) on 18 February 1992.

Our long experience in handling projects either with main contractors or project owners enable us to build a strong relationship with them. Our competencies are proven by overcoming the critical period during the Indonesian monetary crisis in 1998-2001.We strive always to give the best services to all of our customers.


For this reason we are awarded with the ISO 9001:2000 Certificate in year 2001 by SAI Global Services. Along with the spirit of Growth for Better Services, we expand our business unit in Pressure Vessel. In the last 4 years the Pressure Vessel unit together with steel structure is successful in building Engineering, Procurement and Construction (EPC) Project scope for Liquefied Petroleum Gas (LPG) Plant.


We strongly believe that continuous improvement should be happened in our management system, people competencies, information-system as well as workshop facilities.

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