Pipe type Thickness, mmNominal bore, mmSteel grades
Rectangular pipe1,5; 2; 2,5; 3; 3,5; 450х25; 60х25; 60х30; 60х40; 80х40; 80х60; 100х50; 120х80; 140х60Ст1; Ст2; Ст3; Ст4; 08; 10; 15; 20; 35; 45; 08Ю;
09Г2; 09Г2С и др.

Square shaped steel pipe GOST 8645-68

Price: 0 $/per ton

Rectangular shaped steel pipe is produced of size ranges in accordance with GOST 8645-68 “Rectangular steel pipe. Assortment”, and of mechanical properties in accordance with GOST 13663-86 “Shaped steel pipe. Specifications”. Pipe is produced of galvanized and non-galvanized strip of own production.

* – Price is indicated only for small-scale wholesale and Ex-Works shipping( minimum value – 1 package). Loading characteristics, weight and length of pipe are presented at “Packing” tab. Express shipping of pipe is possible only for positions presented at “In stock” tab. Lower price shipment is possible for products, presented at “illiquid assets” tab. The price for batches from 20 tones is agreed individually.

Our partners:

партнеры -труба стальная

Наличие труб и замкнутых профилей на складе ООО “УМК”:

Остатки на 20.11.2017Вес, тонн
100x50x4 (09Г2С)0,365
120x80x3 (цинк)1,551
50x50x2 (цинк)0,367
60x40x1.5 (цинк)0,845
60x40x2 (цинк)0,054
60x40x3 (09Г2С)1,655
80x60x4 (09Г2С)3,389
80x80x2 (цинк)5,964
80x80x3 (цинк)71,914
80x80x4 (09Г2С)0,672
76x2 (цинк)4,174
ДУ 40x3.52,272
Packaging material

Black packaging steel strap (waxed and painted) 32*0,8 mm. Packing interval – 0,5 m from package end and further on at the distance of at least 1,5 m. Packing is carried out by import equipment Signode, providing ideal tension and package safety. Product transportation is possible without using bolsters. While transporting recently produced pipes, one shall take into account that all shaped pipes are thoroughly oiled.

Package length: 6; 11,7 and 12m (other dimensions can be agreed individually).

Package weight and dimensions:

Pipe/closed profile typePackage size, mm (pcs)Number of pieces in one package, pcsTotal pipe length of 6 m length package l.m.Package weight, tn, thickness variations
2 mm3 mm4 mm
50х25450х450 (9х18)1629722,1193,0423,8
60х25480х475 (8х19)1529122,81
60х30480х480 (8х16)1287682,042,943,84
60х40480х480 (8х12)965761,7052,4833,203
80х40480х480 (6х12)724321,5512,2682,946
80х60480х480 (6х8)482881,7832,324
100х50500х500 (5х10)503003,9965,22
100х100500х500 (5х5)251502,7063,552
120х80480х480 (4х6)241441,3501,650
140х60560х480 (4х8)321921,7802,300
Compliance certificate

электросварные трубы профильные (квадратные, прямоугольные) производительProduction of rectangular steel pipe is carried out at the electric pipe-welding mill “40-140” of the South Korean company “JUNGWOO EMC CO., Ltd”. The quality of UMC rectangular steel pipe is confirmed by the compliance certificates GOST 8645-68 and GOST 13663-86.

Integrated Management System

лента оцинкованная, лента стальная оцинкованная The company has developed and implemented an integrated management system (IMS), confirmed by the compliance certificate. The certificate confirms that rectangular shaped steel pipe GOST 8645-68 (GOST 13663-86) is produced in accordance with the requirements of GOST ISO 9001-2011 (ISO 9001:2008), GOST R 54934-2012 (OHSAS 18001:2007), GOST (ISO 14001:2004).

Weld seam test

Weld seam test of shaped steel pipes is carried out at electric magnaflux plant UMD-101M. Plant operation principle is based on creating of static magnetic field in tested objet and transformation of the field changes (leakage) into electric signal – defect signal. The leakage is generated by geometric and electromagnetic oscillations of the system “converter-product”, i.e. by defects such as steel discontinuity (see pict. 1).

Defect detector works in continuously-automated operating mode and while pipe moves it carries out non-destructive control testing of weld discontinuity, it also registers defects and informs the operator about the quality of weld seam, its deseaming and geometry. Immediate receiving of information shows the welder correctness or incorrectness of pipe forming operation and welding of shaped pipes.

схема намагничивания

Dimensions of UMC rectangular shaped pipe

Wall thickness, mmSectional area, cm2Weight of 1 m, kgInertia moment, cm
Resistance moment, cm
50251,5, 2,0, 2,5, 3,0, 3,5, 42,15-5,081,67, 2,17, 2,66, 3,13, 3,57, 3,992,28-4,406,77-13,931,83-3,522,71-5,57
60252,5, 3,0 3,5, 4,03,89-5,883,05, 3,60, 4,12, 4,623,99-5,2916,34-22,743,19-4,235,45-7,59
301,5, 2,0, 2,5, 3,0, 3,5, 4,02,57-6,282,02, 2,65, 3,25, 3,83, 4,39, 4,934,07-8,3211,99-25,882,71-5,554,0-8,63
401,5, 2,0, 2,5, 3,0, 3,5, 4,02,87-7,082,25, 2,96, 3,64, 4,30, 4,94, 5,567,79-16,7814,56-32,163,9-8,394,85-10,72
80402,0, 3,0, 3,5, 4,04,57-8,683,59, 5,25, 6,04, 6,8212,85-21,9837,9-66,916,43-10,999,47-16,73
603,5, 4,09,1-10,287,14, 8,0751,63-57,2980,94-90,0417,21-19,120,23-22,51

Not presented dimensions of rectangular shaped pipe can be agreed individually.
Dimension tolerances are regulated by par. 6 of GOST 8645-68.

Steel grades

Steel grades used for rectangular shaped pipe production are regulated with GOST 13663-86. According to technical requirements of normative documents pipe is produced:

– as per GOST 380-2005 of carbon steel grades St1sp, St1ps, St1kp, St2sp, St2ps, St2kp, St3sp, St3ps, St3kp, St4sp, St4ps, St4kp;

– as per GOST 9045-93 of steel grade 08u;

– as per GOST 1050-2013 of steel grades 08, 08ps, 08kp, 10, 10ps, 10kp, 15, 15ps, 15kp, 20, 20ps, 20kp, 35, 45;

– as per GOST 19281-2014 of steel grades 09G2, 09G2SС, 10HSND;

– as per GOST 4543-71 – 10ГG2 and 30HGSA.

Mechanical properties of rectangular shaped pipe are regulated with GOST 13663-86.
Depending on the application pipe is produced of the following groups:

– А with regulated mechanical properties of material used for shaped pipe production (in accordance with the following table);

– В with regulated mechanical properties (in accordance with the following table) and regulated steel chemical composition as per GOST 380-2005, 1050-2013, 4543-71, 9045-93 and 19281-2014.

Steel gradesTensile strength σв, N/mm2 (kgf/mm2), not less thanPercentage of elongation δ5, %, not less than
08u294 (30)14
08, 08ps, 08kp314 (32)13
st1sp, st1ps, st1kp333 (34)11
st1sp, st1ps, st1kp353 (36)10
st1sp, st1ps, st1kp363 (37)10
st1sp, st1ps, st1kp372 (38)10
10, 10ps, 10kp353 (36)10
15, 15ps, 15kp372 (38)10
20, 20ps, 20kp372 (38)10


Shaped steel pipe is one of the steel product types used as a construction material. The assortment of produced pipes includes profiles of different shapes, but the most popular are square pipe and rectangular pipe. Plasticity properties of the steel used in pipe production, allows to produce folded shaped pipes. Special mills and equipment – pipe benders – are used for bending. Galvanized shaped steel pipe is a product manufactured of cold-rolled galvanized steel.

Application field

Main application of shaped pipes is steel products manufacturing. Shaped pipes are used for building of different constructions: farms, gates, greenhouses, sheds etc. Besides they can be also used for making such objects as: bench, stairs, summerhouse, wicket, fence and so on.


Main application of shaped pipes is connected with sustainable resistance to lateral loads. Planes situating perpendicularly to the pressure direction can provide higher resistance to pressure. This property makes profiled pipes more convenient in comparison with flexible round pipes. In case if the pressure direction is already known the strength characteristics of the pipe can be strengthened in advance by using rectangular section instead of square one. Generally it turns out that when using these pipe types in building structures specific consumption of steel materials can be reduced as well as costs. Another advantage is more stable attachment of various building materials to a smooth plane.

Other types of products: