About Us /

BUYUKOGLU Ins. Malz. San. ve Dis Tic. Ltd. Sti.

About Wboss

"Buyukoglu Constructions Industry Co. Ltd." which has been providing service with marketing of constructions materials in the field of construction and hardware since 2007. Firstly established BAUPEN which is provides constructions materials and accessories for uPVC. Then BUYUKOGLU established WBOSS Door Handles and Acccessories in a order to add newness in the markets. Till today, every year BUYUKOGLU renew itself and improved products, workpower and capacity. In this 8th year, BUYUKOGLU production plant is a modern investment on an area of 8000 sqm closed area and 2000 sqm warehouse area in ISTANBUL-TURKEY and continue to produce with over 90 young and dynamic employees without compensation from product quality. The production of handles which was 12 models at the begining has reached to 80 different types and models. The handles conforming to the international standarts has been offered for sale in the internal and external markets on high quality basis.

Every stage of production process is experiencing a strict Quality Control process from the raw material form of the product up to the level of being finished product within a modern manufacturing enterprise in its factory.

As BUYUKOGLU family; research, development, quality, high standard, customer satisfaction, responsibility, discipline, confidence, differentiation and continuity are the eternal light of us which we always follow.

Our Brands


Door Handles and Accessories


Siliconized Sealant


uPVC Handles and Accessories


Siliconized Sealant


Adjustable 3D Door Hinge


Door Handles

Welcome to Wboss Door Handles

"Simply everything you need to manufacture and install windows and doors is available from WBOSS. By ‘everything‘ we also mean that our products deliver everything you would expect in terms of quality, too. This means you have access to the most comprehensive and consistently high quality range in the sector."

"At very step of production, selection of raw materials, production line and while packaking, quality is a constant standard in every details. In addition to the main products, we maintain quality and customer expectations."