Sigma Profile

Used as beams and roof members in light steel houses, solar power plants and industrial buildings.

About the Product

What Is a Sigma Profile?

Sigma profiles are steel members widely used in light steel housing and industrial applications. They are produced knock-down and, thanks to their channelled shape, are easy to anchor. They are among the material options that find a place in many applications, from industrial use to building construction. With its technical properties, the Sigma profile offers users a durable structure that meets expectations, and its advantages create strong demand from many different sectors.

Prefabricated in industry, Sigma profiles are light yet high-strength, which makes them suitable for many uses. Among their main advantages are that they can be made in different sizes and assembled quickly and easily. Sigma profiles are widely used both in industrial production and in construction, where they stand out as a preferred system for columns, beams and roofs in steel buildings.

The bends formed on its surface make the Sigma profile stronger, giving a product that better resists vertical and horizontal loads. Because it is made from thin-walled sheet, cladding materials can be fixed to it easily with self-drilling screws.

Applications

Industrial Buildings

Light Steel Buildings

Solar Energy Systems

Sigma Profile Technical Specifications

The technical specifications of Sigma profiles vary with the production method. Their grade, dimensions and sheet thickness differ according to where the product will be used. You can choose a product by setting the technical details you need, such as size and thickness.

Sigma profiles can be produced in standard sizes or in any intermediate dimension. In construction, the inertia, strength and section values of the product change with the load on the structural member, the support conditions and the steel grade. The steel grade is therefore chosen for the project, the load on the member is calculated and a section calculation is made for the Sigma profiles.

Size, sheet thickness, strength and section values can vary from product to product, but every Sigma profile we produce is based on the TS EN 1993-1-3 standard. Produced to standard, Sigma profiles are carefully prepared to deliver the performance their application requires.

The product's general technical features are:

Easy assembly thanks to its channelled shape
Production to project
Wide design variety and custom sizes
Fast anchoring
High safety and strength
Lightweight system
Fast production
Computer-aided manufacturing with 3D software
Galvanised production for corrosion resistance
Project-specific connection details
Assembly by drilling holes wherever required

Because Sigma profiles are specially designed and shaped differently from other profiles, project details must be worked out carefully. Quality comes first in their production: on state-of-the-art lines they are made to the requested lengths and sizes, with holes drilled at the exact dimensions and positions in the project details, burr-free cutting, inkjet marking on the profiles and customer-specific packaging. 3D drawings loaded into our computer-controlled, fully automatic, high-capacity machines allow holes to be drilled on any axis of the profile. Profiles can be produced up to 16,000 mm long, in sheet thicknesses of 1.00-4.00 mm, in grades from S235JR to S355JR, with web heights of 160-400 mm and flange widths of 50-100 mm. The galvanising class is set by the customer and the project.

Coating and mechanical properties can be chosen to suit the designed project. Materials can be specified hard or soft according to the loads, and corrosion resistance through the galvanising thickness or paint on hot-rolled sheet.

Sigma Profile Fasteners

Different types of Sigma profiles are produced for different uses. Fasteners are needed to join Sigma profiles and complete their assembly, and connection details vary with the type of material. By application, Sigma profile types are:

Sigma purlin profile
Sigma girt profile
Sigma roof profile
Sigma facade profile
Cold-formed Sigma profile
Perforated Sigma profile

Standard bolts are usually used to assemble Sigma profiles. Some projects may need special connections depending on the work.

Connection brackets can be designed in different ways. To ease assembly, connection holes can be drilled either in the parts that bear on the ground or in the bent web inside, depending on the project's complexity.

Sigma Profile Applications

Solar power systems, light steel and industrial buildings, machine manufacturing, the automotive industry and the white goods sector are among the many fields that may need Sigma profiles.

Sigma profiles are also used as columns in buildings without overhead cranes. In heavy steel industrial buildings under high loads they serve as auxiliary purlins, girts and facade profiles. In non-industrial steel structures such as light steel buildings, warehouses, hangars and livestock shelters they are used as load-bearing columns, beams and roof trusses.

Sigma profiles are used both as load-bearing and as auxiliary members in industrial facilities and steel buildings in the construction, steel structure, light steel and energy sectors. They are known under names such as Sigma profile, Sigma purlin, Sigma girt, roof profile, facade profile, light steel profile, steel construction profile, heavy steel building profile, perforated Sigma profile, cold-formed Sigma profile, custom building profile, steel building profile, prefabricated building profile, custom Sigma profile, frame profile, truss profile and steel roof profile.

Sigma Profile Advantages

With their very high load capacity, Sigma profiles save up to 35% in material and cost compared with buildings made of heavy steel. They are also easy to produce, source, ship and assemble, making steel construction more reliable, faster and more economical.

In roofs, beams and columns, Sigma profiles are a more reliable and preferred system than precast concrete because no pieces break away. Steel construction systems, indispensable in developed countries, are among the most suitable building systems especially for countries in earthquake and natural disaster zones. They are also preferred because they are easy to transport, extend and modify, and are environmentally friendly and recyclable.

Sigma Profile Cross-Section

Dimension legend of the table and Sigma Profile production ranges:

Symbol	Description	Range (mm)
H	Height	160-400
A	Top flange height	50-100
B	Bottom flange height	50-100
C1	Top lip width	15-30
C2	Bottom lip width	15-30
T	Thickness	1.00-4.00
G	Depth	25
F	Projection	15
E	Connection face	40-120

Sigma Profile Technical Data Table

	H	A	B	C₁	C₂	E	F	G	T	Radius	~Strip Width	Weight	Area	Strong Axis (x-x)			Weak Axis (y-y)			Center of Gravity
Profile	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	kg/m	cm²	l_x(cm⁴)	S_x(cm³)	r_x(cm)	l_y(cm⁴)	S_y(cm³)	r_y(cm)	e_x(cm)	e_y(cm)
S400-60x100x28x4	400	100	100	28	28	60	15	25	4	3	650	20,4	25,98	5846,6	292,33	14,91	216,18	32,57	2,87	3,36	0
S400-60x100x26x3,5	400	100	100	26	26	60	15	25	3,5	3	650	17,84	22,73	5113,98	255,7	14,92	187,3	28,02	2,86	3,32	0
S400-60x100x24x3	400	100	100	24	24	60	15	25	3	3	650	15,29	19,47	4381,04	219,05	14,94	158,7	23,56	2,84	3,27	0
S400-60x100x22x2,5	400	100	100	22	22	60	15	25	2,5	3	650	12,74	16,22	3648,3	182,41	14,95	130,61	19,25	2,83	3,22	0
S400-60x100x20x2	400	100	100	20	20	60	15	25	2	3	650	10,19	12,98	2916,02	145,8	14,96	103,01	15,07	2,81	3,17	0
S380-60x100x26x4	380	100	100	26	26	60	15	25	4	3	625	19,64	25,02	5120,95	269,52	14,21	209,18	31,43	2,87	3,34	0
S380-60x100x24x3,5	380	100	100	24	24	60	15	25	3,5	3	625	17,18	21,89	4479,16	235,75	14,23	181,06	27	2,86	3,29	0
S380-60x100x22x3	380	100	100	22	22	60	15	25	3	3	625	14,72	18,75	3837,04	201,95	14,24	153,25	22,68	2,85	3,24	0
S380-60x100x20x2,5	380	100	100	20	20	60	15	25	2,5	3	625	12,27	15,62	3195,1	168,16	14,25	125,99	18,51	2,83	3,19	0
S360-75x58x15x4	360	58	58	15	15	75	15	25	4	3	500	15,69	19,98	3172,05	176,23	12,5	48,79	12,98	1,55	2,04	0
S360-75x56x15x3,5	360	56	56	15	15	75	15	25	3,5	3	500	13,72	17,48	2761,17	153,4	12,48	40,97	11,35	1,52	1,99	0
S360-75x54x15x3	360	54	54	15	15	75	15	25	3	3	500	11,75	14,97	2354,3	130,79	12,47	33,71	9,74	1,49	1,94	0
S360-75x52x15x2,5	360	52	52	15	15	75	15	25	2,5	3	500	9,79	12,47	1951,49	108,42	12,45	26,97	8,14	1,46	1,89	0
S360-75x50x15x2	360	50	50	15	15	75	15	25	2	3	500	7,83	9,98	1552,7	86,26	12,44	20,63	6,53	1,43	1,84	0
S350-70x63x15x4	350	63	63	15	15	70	15	25	4	3	500	15,69	19,98	3081,2	176,07	12,32	56,19	13,62	1,66	2,17	0
S350-70x61x15x3,5	350	61	61	15	15	70	15	25	3,5	3	500	13,72	17,48	2682,86	153,31	12,31	47,16	11,85	1,63	2,12	0
S350-70x59x15x3	350	59	59	15	15	70	15	25	3	3	500	11,75	14,97	2288,19	130,75	12,29	38,77	10,12	1,6	2,07	0
S350-70x57x15x2,5	350	57	57	15	15	70	15	25	2,5	3	500	9,79	12,47	1897,26	108,41	12,28	30,99	8,41	1,57	2,02	0
S350-70x55x15x2	350	55	55	15	15	70	15	25	2	3	500	7,83	9,98	1510	86,29	12,27	23,69	6,7	1,54	1,96	0
S340-70x68x15x4	340	68	68	15	15	70	15	25	4	3	500	15,69	19,98	2976,05	175,06	12,11	66,5	14,67	1,81	2,27	0
S340-70x66x15x3,5	340	66	66	15	15	70	15	25	3,5	3	500	13,72	17,48	2591,97	152,47	12,1	55,84	12,73	1,78	2,21	0
S340-70x64x15x3	340	64	64	15	15	70	15	25	3	3	500	11,75	14,97	2211,25	130,07	12,08	45,92	10,82	1,74	2,16	0
S340-70x62x15x2,5	340	62	62	15	15	70	15	25	2,5	3	500	9,79	12,47	1833,94	107,88	12,07	36,7	8,96	1,71	2,1	0
S340-70x60x15x2	340	60	60	15	15	70	15	25	2	3	500	7,83	9,98	1459,99	85,88	12,06	28,07	7,1	1,67	2,05	0
S320-70x77x16x4	320	77	77	16	16	70	15	25	4	3	500	15,69	19,98	2753,02	172,06	11,64	91,61	17,55	2,12	2,48	0
S320-70x75x16x3,5	320	75	75	16	16	70	15	25	3,5	3	500	13,72	17,48	2398,86	149,93	11,64	77,07	15,17	2,09	2,42	0
S320-70x73x16x3	320	73	73	16	16	70	15	25	3	3	500	11,75	14,97	2047,5	127,97	11,63	63,49	12,85	2,05	2,36	0
S320-70x71x16x2,5	320	71	71	16	16	70	15	25	2,5	3	500	9,79	12,47	1698,95	106,18	11,62	50,82	10,59	2,01	2,3	0
S320-70x69x16x2	320	69	69	16	16	70	15	25	2	3	500	7,83	9,98	1353,19	84,57	11,61	38,95	8,36	1,97	2,24	0
S300-60x80x23x4	300	80	80	23	23	60	15	25	4	3	500	15,69	19,98	2512,76	167,52	11,12	110,7	21,25	2,34	2,79	0
S300-60x80x21x3,5	300	80	80	21	21	60	15	25	3,5	3	500	13,72	17,48	2198,07	146,54	11,14	95,65	18,19	2,32	2,74	0
S300-60x80x19x3	300	80	80	19	19	60	15	25	3	3	500	11,75	14,97	1883,04	125,54	11,15	80,85	15,23	2,31	2,69	0
S300-60x80x17x2,5	300	80	80	17	17	60	15	25	2,5	3	500	9,79	12,47	1567,91	104,53	11,16	66,36	12,38	2,3	2,64	0
S300-60x80x16x2	300	80	80	16	16	60	15	25	2	3	500	7,86	10,02	1260,18	84,01	11,18	53,33	9,89	2,3	2,61	0
S280-60x90x23x4	280	90	90	23	23	60	15	25	4	3	500	15,69	19,98	2276,38	162,6	10,59	149,88	25,34	2,72	3,09	0
S280-60x90x21x3,5	280	90	90	21	21	60	15	25	3,5	3	500	13,72	17,48	1992,45	142,32	10,61	129,47	21,69	2,7	3,03	0
S280-60x85x24x3	280	85	85	24	24	60	15	25	3	3	500	11,75	14,97	1692,46	120,89	10,57	103,33	18,6	2,61	2,94	0
S280-60x85x22x2,5	280	85	85	22	22	60	15	25	2,5	3	500	9,79	12,47	1411,06	100,79	10,59	85,13	15,18	2,6	2,89	0
S280-60x85x21x2	280	85	85	21	21	60	15	25	2	3	500	7,86	10,02	1134,78	81,06	10,61	68,48	12,14	2,61	2,86	0
S280-60x85x18x1,5	280	85	85	18	18	60	15	25	1,5	3	500	5,88	7,49	846,73	60,48	10,62	49,75	8,71	2,58	2,79	0
S260-60x95x28x4	260	95	95	28	28	60	15	25	4	3	500	15,69	19,98	2014,6	154,97	9,96	186,7	30,5	3,03	3,38	0
S260-60x95x26x3,5	260	95	95	26	26	60	15	25	3,5	3	500	13,72	17,48	1765,42	135,8	9,98	161,52	26,15	3,02	3,32	0
S260-60x95x24x3	260	95	95	24	24	60	15	25	3	3	500	11,75	14,97	1515,35	116,57	10	137,03	21,99	3,01	3,27	0
S260-60x90x27x2,5	260	90	90	27	27	60	15	25	2,5	3	500	9,79	12,47	1250,74	96,21	9,97	106,7	18,31	2,91	3,17	0
S260-60x90x25x2	260	90	90	25	25	60	15	25	2	3	500	7,83	9,98	1002,15	77,09	9,99	84,56	14,38	2,9	3,12	0
S260-60x90x23x1,5	260	90	90	23	23	60	15	25	1,5	3	500	5,88	7,49	752,57	57,89	10,01	62,76	10,58	2,89	3,07	0
S240-65x67x16x4	240	67	67	16	16	65	15	25	4	3	400	12,55	15,98	1255,19	104,6	8,77	63,25	14,11	1,97	2,22	0
S240-65x65x16x3,5	240	65	65	16	16	65	15	25	3,5	3	400	10,97	13,98	1092,78	91,07	8,77	52,81	12,15	1,93	2,15	0
S240-65x63x16x3	240	63	63	16	16	65	15	25	3	3	400	9,4	11,97	931,93	77,66	8,76	43,2	10,26	1,89	2,09	0
S240-65x61x16x2,5	240	61	61	16	16	65	15	25	2,5	3	400	7,83	9,97	772,83	64,4	8,76	34,55	8,49	1,85	2,03	0
S240-65x60x16x2	240	60	60	16	16	65	15	25	2	3	400	6,29	8,02	620,74	51,73	8,77	27,41	6,84	1,84	1,99	0
S240-65x57x16x1,5	240	57	57	16	16	65	15	25	1,5	3	400	4,7	5,99	458,89	38,24	8,74	18,9	4,98	1,77	1,91	0
S240-65x56x16x1,2	240	56	56	16	16	65	15	25	1,2	3	400	3,76	4,79	366,62	30,55	8,74	14,81	3,97	1,76	1,87	0
S220-55x77x16x4	220	77	77	16	16	55	15	25	4	3	400	12,55	15,98	1116,42	101,49	8,27	84,92	16,68	2,28	2,61	0
S220-55x75x16x3,5	220	75	75	16	16	55	15	25	3,5	3	400	10,97	13,98	972,65	88,42	8,27	71,11	14,34	2,24	2,54	0
S220-55x73x16x3	220	73	73	16	16	55	15	25	3	3	400	9,4	11,97	830,29	75,48	8,27	58,54	12,13	2,2	2,47	0
S220-55x71x16x2,5	220	71	71	16	16	55	15	25	2,5	3	400	7,83	9,97	689,1	62,65	8,27	46,89	9,99	2,16	2,41	0
S220-55x69x16x2	220	69	69	16	16	55	15	25	2	3	400	6,26	7,98	548,96	49,91	8,27	36,02	7,9	2,12	2,34	0
S220-55x67x16x1,5	220	67	67	16	16	55	15	25	1,5	3	400	4,7	5,99	409,92	37,27	8,26	25,89	5,85	2,08	2,28	0
S220-55x66x16x1,2	220	66	66	16	16	55	15	25	1,2	3	400	3,76	4,79	327,64	29,79	8,26	20,33	4,66	2,06	2,24	0
S200-50x74x16x4	200	74	74	16	16	50	15	25	4	3	375	11,73	14,94	868,86	86,89	7,54	74,47	15,44	2,21	2,58	0
S200-50x72x16x3,5	200	72	72	16	16	50	15	25	3,5	3	375	10,26	13,07	756,83	75,68	7,54	62,23	13,26	2,16	2,51	0
S200-50x70x16x3	200	70	70	16	16	50	15	25	3	3	375	8,79	11,19	645,99	64,6	7,54	51,16	11,22	2,12	2,44	0
S200-50x68x16x2,5	200	68	68	16	16	50	15	25	2,5	3	375	7,32	9,32	536,09	53,61	7,54	40,93	9,24	2,08	2,37	0
S200-50x67x16x2	200	67	67	16	16	50	15	25	2	3	375	5,89	7,5	430,94	43,09	7,55	32,56	7,46	2,08	2,33	0
S200-50x64x16x1,5	200	64	64	16	16	50	15	25	1,5	3	375	4,39	5,6	318,82	31,88	7,54	22,52	5,41	2	2,24	0
S200-50x63x16x1,2	200	63	63	16	16	50	15	25	1,2	3	375	3,52	4,48	254,82	25,48	7,54	17,67	4,31	1,99	2,2	0
S200-45x84x19x4	200	84	84	19	19	45	15	25	4	3	400	12,55	15,98	966,89	96,69	7,7	107,24	19,97	2,56	3,03	0
S200-45x84x17x3,5	200	84	84	17	17	45	15	25	3,5	3	400	10,97	13,98	847,04	84,7	7,72	92,15	16,98	2,55	2,97	0
S200-45x80x19x3	200	80	80	19	19	45	15	25	3	3	400	9,4	11,97	720,1	72,01	7,7	74,36	14,54	2,48	2,89	0
S200-45x80x17x2,5	200	80	80	17	17	45	15	25	2,5	3	400	7,83	9,97	601,12	60,11	7,72	61,17	11,83	2,46	2,83	0
S200-45x75x20x2	200	75	75	20	20	45	15	25	2	3	400	6,26	7,98	475,5	47,55	7,69	45,33	9,51	2,38	2,74	0
S200-45x75x18x1,5	200	75	75	18	18	45	15	25	1,5	3	400	4,7	5,99	357,28	35,73	7,71	33,57	6,97	2,37	2,68	0
S180-45x80x20x4	180	80	80	20	20	45	15	25	4	3	375	11,73	14,94	732,03	81,34	6,93	96,2	19	2,51	2,94	0
S180-45x80x18x3,5	180	80	80	18	18	45	15	25	3,5	3	375	10,26	13,07	642,07	71,34	6,95	82,86	16,18	2,5	2,88	0
S180-45x80x16x3	180	80	80	16	16	45	15	25	3	3	375	8,79	11,19	551,42	61,27	6,97	69,84	13,48	2,48	2,82	0
S180-45x75x19x2,5	180	75	75	19	19	45	15	25	2,5	3	375	7,32	9,32	454,21	50,47	6,94	54,09	11,33	2,4	2,73	0
S180-45x75x18x2	180	75	75	18	18	45	15	25	2	3	375	5,89	7,5	366,26	40,7	6,96	43,48	9,05	2,4	2,69	0
S180-45x75x15x1,5	180	75	75	15	15	45	15	25	1,5	3	375	4,39	5,6	273,7	30,41	6,98	31,52	6,45	2,37	2,61	0
S170-40x69x15x4	170	69	69	15	15	40	15	25	4	3	333	10,41	13,26	563,86	66,34	6,44	56,73	12,96	2,04	2,52	0
S170-40x65x15x3	170	65	65	15	15	40	15	25	3	3	333	7,8	9,93	418,99	49,29	6,44	38,71	9,41	1,96	2,39	0
S170-40x63x15x2,5	170	63	63	15	15	40	15	25	2,5	3	333	6,5	8,27	347,71	40,91	6,44	30,97	7,77	1,92	2,32	0
S170-40x62x15x2	170	62	62	15	15	40	15	25	2	3	333	5,23	6,66	279,6	32,89	6,45	24,51	6,25	1,91	2,28	0
S160-40x64x15x4	160	64	64	15	15	40	15	25	4	3	311	9,78	12,46	463,01	57,88	6,02	46,8	11,59	1,91	2,36	0
S160-40x60x15x3	160	60	60	15	15	40	15	25	3	3	311	7,33	9,33	343,8	42,97	6,02	31,82	8,42	1,83	2,22	0
S160-40x58x15x2,5	160	58	58	15	15	40	15	25	2,5	3	311	6,1	7,77	285,13	35,64	6,02	25,33	6,95	1,79	2,15	0
S160-40x56x15x2	160	56	56	15	15	40	15	25	2	3	311	4,88	6,22	226,83	28,35	6,01	19,2	5,46	1,75	2,09	0
S160-40x54x15x1,5	160	54	54	15	15	40	15	25	1,5	3	311	3,66	4,67	169,28	21,16	6,01	13,75	4,07	1,71	2,02	0
S160-40x53x15x1,2	160	53	53	15	15	40	15	25	1,2	3	311	2,94	3,74	135,29	16,91	6,01	10,76	3,24	1,7	1,98	0
S160-40x52x15x1	160	52	52	15	15	40	15	25	1	3	311	2,44	3,11	112,24	14,03	6,01	8,71	2,68	1,67	1,95	0

Technical Information

Bend radius at 90° corners: min. 3.00 mm
Standard: TS EN 1993-1-3
Material: S390GD + Z

S350GD+Z

DX51D+Z

S235 JR

S355JR

Intermediate sizes can also be produced on request.
An effective section calculation based on steel grade and load is recommended.
Effective inertia, strength and section values change with the load, support conditions and steel grade.
All calculations are based on the centre of gravity.
A, B and C can be produced in different sizes.

Calculate the section values that suit your project.

Cross-Section Calculator

Sigma Profile Prices

Price options matter as much as where Sigma profiles are used. Their price can vary with the application, project-specific requests in the construction sector, product size and technical properties. Sigma profile prices also fall in different ranges depending on material quality and production method.

In construction, Sigma profile sizes are produced specifically for each project. Factors such as exact-size production to project details, slotting at the positions needed for assembly, customer-specific sizes and packaging directly affect Sigma profile prices. For prices for your project's needs, please contact us.

Last updated: 23.10.2026

At Prefabrik Yapı İnşaat Sanayi ve Ticaret A.Ş., we are committed to ensuring that all personal data belonging to individuals associated with our Company is processed and retained in accordance with the Personal Data Protection Law No. 6698 (“KVKK”), which entered into force on 7 April 2016, to protect your fundamental rights and freedoms. As the Data Controller, we process your personal data as described below and within the limits prescribed by law. Our aim is to inform you in accordance with Article 10 of the KVKK.

Data Controller

Under the KVKK, your personal data will be collected and may be processed by Prefabrik Yapı İnşaat Sanayi ve Ticaret A.Ş., as the data controller, within the scope described below.

Why Do We Process Your Personal Data?

We process personal data primarily to provide you with better products and services, for the following purposes: to offer you our Company's products and services; to prepare records and documents; to comply with information retention, reporting, disclosure, tax and other obligations under domestic and international legislation; to conduct research, planning and statistical studies; to analyse and archive our customer portfolio and communicate with our customers; to assess customer complaints and suggestions concerning our services; to obtain your opinions and suggestions about new services and products; to provide personalised advertising, campaigns, offers and other benefits as part of sales, promotional and marketing activities aimed at improving the quality of our services and products; and to fulfil our information retention, reporting and disclosure obligations imposed by judicial and administrative authorities.

What Is Permitted in Relation to Personal Data Under the KVKK?

Under the Personal Data Protection Law No. 6698, Prefabrik Yapı İnşaat Sanayi ve Ticaret A.Ş., as the data controller, may record and store your personal information in physical or electronic form, update, classify and process it within the limits of that law, and disclose it to third parties, transfer it and process it to the extent permitted by legislation and solely for the purposes stated above.

To Whom and for What Purposes May Personal Data Be Transferred?

To fulfil the purposes stated above, Prefabrik Yapı İnşaat Sanayi ve Ticaret A.Ş., as the data controller under the KVKK, may record and store your personal data in physical or electronic form, update, classify and process it within the limits of that law. To the extent permitted by legislation, it may disclose and transfer your personal data to business partners in Türkiye and abroad, group companies, shareholders, affiliates, individuals or legal entities with which it collaborates, courier companies, banks, individuals or legal entities from which it receives services or with which it collaborates in relation to products/services, and public authorities, and process it, subject to the personal data processing conditions and purposes set out in Articles 8 and 9 of the KVKK.

What Does the “Personal Data” We Are Required to Protect Include?

Under Article 3/d of the KVKK, personal data includes identity information, access details and contact information, and any information and documents obtained through transactions under any type of contract that make it possible to identify our suppliers, our suppliers' representatives/employees, our business/solution partners, our business/solution partners' representatives/employees, our subcontractors, our subcontractors' representatives/employees, our customers, our customers' representatives/employees, our prospective customers, our prospective customers' representatives/employees, our employees, our job applicants, our interns, our scholarship recipients, our shareholders/partners, and individuals conducting business with our Company or representatives/employees of private legal entities conducting business with our Company through a legal relationship established under any designation.

How Is Personal Data Collected?

Your personal data may be collected in writing, verbally or electronically through our website; our sales outlets; our company, branch and factory premises; our call centre; our social media accounts; our employees; contracts; our quotation forms; and other channels. Without infringing your fundamental rights and freedoms, our Company will retain the personal data it obtains for the periods specified in the legislation to which it is subject, where such periods are prescribed, or, where no such period is prescribed, for as long as necessary for the purposes for which it is processed. It will then delete, destroy or anonymise the data. You can view the retention periods our Company has declared to VERBİS by conducting a search at https://verbis.kvkk.gov.tr/Query/Search.

What Are the Data Subject's Rights Under the KVKK?

In relation to your personal data, you have the right to:

a) learn whether it is being processed,
b) request information if it has been processed,
c) learn the purpose of processing and whether it is being used in accordance with that purpose,
ç) know the parties to whom it has been transferred, d) request rectification if it has been processed incompletely or inaccurately,
e) request its deletion and destruction subject to the conditions set out in Article 7 of the KVKK,
f) request that the actions taken under subparagraphs (d) and (e) above be notified to third parties to whom it has been transferred,
g) object to an outcome detrimental to you resulting from its analysis exclusively through automated systems,
ğ) claim compensation for any damage you suffer as a result of its unlawful processing.

Data subjects may submit requests concerning the rights listed above to our Company by preparing an information request using the methods specified below or other methods determined by the Personal Data Protection Board, together with information and documents establishing their identity. Our Company will resolve the requests included in the application free of charge as soon as possible, depending on the nature of the request, and within thirty days at the latest. However, if the procedure entails an additional cost, a fee may be charged in accordance with the tariff determined by the Board.

1. To request information, a copy of the application form available on our Company's website bearing the applicant's handwritten signature must be delivered in person or through a notary to “Güzelyalı Mahallesi, Egemen Sokak, No.11/3 Pendik/Istanbul”, together with a photocopy of the applicant's identity card/passport establishing their identity.

2. To request information, the application form available on our Company's website must be signed with a “secure electronic signature” under the Electronic Signature Law No. 5070 or with a handwritten signature, and emailed to kvkk@prefabrikyapi.com, together with a photocopy of the applicant's identity card/passport establishing their identity. The applicant must send the email using an email address previously provided to the data controller and registered in the data controller's system.

3. For a third party to submit an application on behalf of a data subject, the data subject must grant a special power of attorney, executed through a notary, to the person who will submit the application.
KVKK Application Form (PDF, in Turkish)