It is manufactured with electric resistance (ERW) from the steel bands in conformity with EN 10025 (DIN 17100) norm.
It is manufactured from the standard St 37 quality material and upon the special order manufacturing can be made in St 44 or different quality and wall thickness.
It is painted with ground color against corrosion (it is also delivered unpainted upon request)
The welding part is controlled by U / S test.
It is delivered in standard 6 m lengths and upon special order it can be delivered up to 12m

• The square and the rectangular profiles are manufactured according to TS 5317 and the world standards (ASTM A - 500, ASTM - 510, DIN 59411, EN 10210 - 2 (BS 4848), GOST 8639, GOST 8645, EN 10219).
• The pipes are manufactured butt welding according to TS 416 or TS 1997 norm.