Seamless pipes GOST 10704 91 certificate. Integrated management system

PIPE STRAIGHT-SEAM

Straight-seam electric-welded pipe GOST 10705-80 (GOST 10704-91)

Price: 0 rubles*

Straight-seam steel pipe is produced in part of the assortment according to GOST 10704-91 “Steel electric-welded straight-seam pipes. Assortment", in terms of technical characteristics in accordance with GOST 10705-80 "Steel electric-welded pipes. Specifications". Products are made from tape of our own production with and without zinc coating. The welded seam of a galvanized pipe is coated with zinc paint by cladding.

* — The price is indicated for small wholesale lots and self-delivery shipments (minimum volume is 1 pack) Cargo characteristics, weight and footage of pipes are presented in the "Packaging" section. Expeditious shipment of a profile is possible only for positions available in stock (section "Availability"). Delivery at lower prices is possible from the assortment presented in the section "Illiquid assets". The price for cargo lots from 20 tons is agreed separately.

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TYPES AND BRANDS

Types of pipes

LLC "UMK" produces longitudinally welded pipes with and without zinc coating.

Steel grades

Depending on the customer's request, the straight-seam pipe can be manufactured according to the requirements presented in the table:

Group	Rationing	Steel grades
BUT	mechanical properties	St1, St2, St3, St4 according to GOST 380-2005 (category 4 according to GOST 16523-97, category 1 according to GOST 14637-89)
B	Chemical Composition	- from calm, semi-calm and boiling steel grades St1, St2, St3, St4 according to GOST 380-2005 and GOST 14637-89; - from low-alloy steel grades in accordance with GOST 19281-2014 and other regulatory documents with a normalized carbon equivalent of not more than 0.46%
AT	Mechanical properties and chemical composition	- from calm, semi-calm and boiling steel grades St1, St2, St3, St4 in accordance with GOST 380-2005 (category 4 in accordance with GOST 16523-97, category 2-5 in accordance with GOST 14637-89); - from calm, semi-calm and boiling steel grades 08, 10, 15, 20 according to GOST 1050-2003; - from steel grade 08Yu according to GOST 9045-93; - from low-alloy steel grade 22GU; - from low-alloy steel grades in accordance with GOST 19281-2014 and other documents with a normalized carbon equivalent of not more than 0.46%

The standards are presented in the Quality and Standards section.

QUALITY AND STANDARDS

Certificate of conformity

The straight-seam round electric-welding pipe is manufactured on the mill "40-140" of the South Korean company "JUNGWOO EMC CO". The quality of the electric-welded longitudinal pipe manufactured by UMK LLC is confirmed by a certificate of conformity to GOST 10705-80 and GOST 10704-91. At the request of the client, LLC "UMK" can conduct additional tests of the quality of products.

Integrated management system

The company has developed and implemented an integrated management system (IMS), which is confirmed by a certificate of conformity. The certificate certifies that the longitudinal electric welded pipe GOST 10705-80 (GOST 10704-91) 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 control

Inspection of the welded seam of electric-welded pipes is carried out on the installation for magnetic flaw detection UMD-101M. The principle of operation of the installation is based on creating a constant magnetic field in the controlled product and converting into an electrical signal - a defect signal - changes (scattering) of this field caused by fluctuations in the geometric and electromagnetic parameters of the "converter-product" system, that is, the presence of defects such as metal discontinuities ( see picture).

The flaw detector operates continuously in automatic mode and conducts 100% non-destructive testing of the continuity of welds during pipe movement, marks defects, continuously informs the operator about the quality of the weld, its cleaning and geometry. Operational receipt of information shows the welder the correctness or incorrectness of the modes of forming and welding longitudinally seam pipes.

Technical standards

The main standards used by UMK LLC in the production of longitudinally welded electric pipes and materials for their production:

№	GOST	Description	Last modified date	Download
Assortment
1	10704-91	Pipes are steel electrowelded straight-line-seam. Assortment	22.09.2015
Technical requirements
2	10705-80	Pipes are steel electrowelded. Specifications	22.09.2015
Steel grades
3	1050-2013	Metal products from non-alloyed structural high-quality and special steels. General specifications	18.02.2016
4	380-2005	Carbon steel of ordinary quality. Stamps	16.01.2015
5	9045-93	Rolled thin-sheet cold-rolled from low-carbon quality steel for cold stamping. Specifications	16.01.2015
6	4543-71	Rolled products from alloyed structural steel. Specifications	22.09.2015
7	19281-2014	Rolled high strength. General specifications	18.02.2016
8	14637-89	Rolled thick-plate carbon steel of ordinary quality. Specifications	16.01.2015
9	16523-97	Rolled thin-sheet carbon steel of high quality and ordinary quality for general purposes. Specifications	18.02.2016	Wait Until Midnight

DIMENSIONS AND PROPERTIES

Dimensions

Dimensions and weight 1 r.m. electric-welded longitudinal pipe produced by UMK LLC (in kg.).

Outer diameter, mm	Wall thickness, mm
Outer diameter, mm	1,5	1,8	2,0	2,2	2,5	2,8	3,0	3,2	3,5	3,8	4,0	4,5
48	1.72	2,05	2,27	2,48	2,81	3,12	3,33	3,54	3,84	—	—	—
48,3	1,73	2,06	2,28	2,5	2,82	3,14	3,35	3,56	3,87	—	—	—
51	1,83	2,18	2,42	2,65	2,99	3,33	3,55	3,77	4,1	—	—	—
57	2,05	2,45	2,71	2,97	3,36	3,74	4	4,25	4,62	—	—	—
60	2,16	2,58	2,86	3,14	3,55	3,95	4,22	4,48	4,88	5,27	—	—
76	2,76	3,29	3,65	4	4,53	5,05	5,4	5,75	6,26	6,77	7,1	7,93
89	—	3,87	4,29	4,71	5,33	5,95	6,36	6,77	7,38	7,98	8,38	9,38
95	—	—	4,59	—	5,7	—	—	7,24	—	—	—	—
102	—	4,45	4,93	5,41	6,13	6,85	7,32	7,8	8,5	9,2	9,67	10,82
108	—	4,71	5,23	5,74	6,5	7,26	7,77	8,27	9,02	9,76	10,2	11,49
114	—	4,98	5,52	6,07	6,87	7,68	8,21	8,74	9,54	10,33	10,8	12,15
133	—	5,82	6,46	7,1	8,05	8,99	9,62	10,2	11,1	12,11	12,7	14,26
140	—	6,13	6,81	7,48	8,48	9,47	10,14	10,8	11,7	12,76	13,4	15,04
159	—	6,67	7,4	8,13	9,22	10,3	11,02	11,7	12,8	13,89	14,6	16,37

An electric-welded pipe not indicated in the table is manufactured according to the customer's dimensions only after agreement.
Limit deviations are regulated by paragraph 6 of GOST 10704-91.

Mechanical properties

The mechanical properties of the metal of pipes of steel longitudinal-seam groups A and B without heat treatment and with heat treatment of the welded joint, with a diameter of 48 to 152 mm, correspond to the standards indicated in the table:

steel grade	Tensile strength σ in, N / mm 2 (kgf / mm 2) with an outer diameter of pipes, mm		Yield strength σ t, N / mm 2 (kgf / mm 2)	Relative elongation δ 5,%, with the outer diameter of pipes, mm
	up to 60 mm	over 60		up to 60 mm for wall thickness		over 60
	up to 60 mm	over 60		more than 0.06D	0.06 D or less	over 60
at least
08Yu	294(30)	264(27)	176(18)	7	16	25
08ps, 08kp	314(32)	294(30)	176(18)	6	15	23
St1ps, St1kp, St1sp	314(32)	294(30)	186(19)	6	15	23
10kp, St2kp, 10ps, 10	333(34)	314(32)	176(18)- 196(20)	6	15	23
15kp, 15ps, 20kp, 15	372(38)	353(36)	186(19)- 216(22)	5	14	21
St3kp, St3ps, St3sp	392(40)	372(38)	196(20)- 216(22)	5	13	20
St4kp, St4ps, St4sp	431(44)	412(42)	216(22) – 225(23)	4	11	19
22GU	—	490(50)	344(35)	—	—	15
20F, 20-CSH, 06GB	—	470 (48)	265 (27)	—	—	18
09G2S, 09GSFi etc.	—	490 (50)	323 (33)	—	—	18

PACKAGE

Packing material

Packing tape black (coated with wax and varnish) 32*0.8 mm. The packing interval is 0.5 meters from the edges of the pack and further at a distance of at least 1.5 meters. Packing is made by the import equipment "Signode" providing an optimum tension and safety of a pack. Transportation of products without "horses" is acceptable. When transporting a profile recently released from production, it should be taken into account that the entire closed profile is oiled.

Pack length: 6, 11.7 and 12 meters (manufacturing in other sizes as agreed).

Weight and dimensions of packs:

Pipe diameter, mm	Pack dimensions, mm/packing scheme, pcs.	Quantity in a pack, pcs.	The total footage of the pipe in a pack 11.7 meters long, l.m.	Pack weight with different thickness of pipes, kg
Pipe diameter, mm	Pack dimensions, mm/packing scheme, pcs.	Quantity in a pack, pcs.		2 mm	3 mm	3.5mm	4 mm	4.5mm
48	528x464 (6-7-8-9-10-11-10-9-8-7-6)	91	1065	2417	3545	4088
51	459x404 (5-6-7-8-9-8-7-6-5)	61	714	1727	2534	2926
57	513x452 (5-6-7-8-9-8-7-6-5)	61	714	1934	2855	3297	3733
60	540x476 (5-6-7-8-9-8-7-6-5)	61	714	2041	3012	3483	3954
76	532x471 (4-5-6-7-6-5-4)	37	432,9		2338	2710	3074
89	632x551.5 (4-5-6-7-6-5-4)	37	432,9		2753	3195	3628
102	510x455 (3-4-5-4-3)	19	222		1627	1890	2150
108	540x482 (3-4-5-4-3)	19	222		1727	2005	2267
114	570x509 (3-4-5-4-3)	19	222			2121	2401	2701
133	665x594 (4-5-6-5-4)	24	280			3117	3566	4004
140	700x625 (3-4-5-4-3)	19	222			2601	2979	3343

Description

Pipe products obtained as a result of strip welding are called electric welded. A round electric-welded pipe is also often called a water-gas pipeline (VGP), due to its active use in gas, water distribution systems and for heating. With rare exceptions, pipe mills produce longitudinally welded steel pipes. Small-diameter round tubing can be made thin-walled or thick-walled casing. The price of electric welded pipe mainly depends on the prices and demand for hot-rolled strips.

Application area

Rolled pipes are used in various industries: mechanical engineering, furniture industry, in the production of metal structures, in construction and others. However, the main purpose is the transportation of liquid and gaseous substances: water for consumption and heating, hydrocarbons and other chemical products. The efficiency of transporting liquids through pipeline systems is ensured by their ability to withstand pressures up to 16 MPa.

Comparison

Electric-welded longitudinal pipes according to GOST 10705-80 and GOST 10704 91 are also often called water and gas pipes. However, it is more correct to attribute only GOST 3262-75 to water and gas pipelines. The water and gas pipe according to GOST 10704-91, in contrast to GOST 3262-75, has a dimension according to the outer diameter, and not the conditional passage.

Order by phone You can clarify any details and place an order through our phone managers. Call the sales department at +7(495)777-67-22, our specialists will definitely help you with the choice and place an order for you. Quick order The easiest way to order a product is to place an order in one click! Click the button next to the product price Quick order, enter your phone number and press Checkout and your order will be processed. In a few minutes, the manager will call you back to clarify the details of the delivery of the goods. Ordering through the basket If you want to purchase several items at once, use the classic basket. Click the button next to the product price Buy. Do this for all items you wish to purchase. After that, go to the basket by clicking the button Basket in the right corner of the site. In the shopping cart, check the contents of the order and its amount. After that, fill in the fields of the contact form, select the delivery method and click Checkout and your order will be processed. In a few minutes, the manager will call you back to clarify the details of the delivery of the goods. Order via mail You can send a list of goods you are interested in by e-mail. Even if you did not find the product on our website, we will do it for you. Send specifications, layouts, calculations - we consider all letters from our clients.

How to get the goods?

Delivery in Moscow and Moscow Region You can be sure: our own delivery service will bring the goods with all the necessary documents directly to your home. Delivery within the Moscow Ring Road - 500 rubles, outside the Moscow Ring Road - 40 rubles / kilometer. Delivery in Russia We will send the goods for you to any point in Russia through the transport company of your choice. The cost of such delivery depends on the region, dimensions and weight of the goods. You can always check with our managers for detailed information about delivery in Russia. Pickup Our office is located in the business park Rumyantsevo on the Kiev highway. Just 500 meters from the Moscow Ring Road, free parking, walking distance to the metro. You can pay for the goods at the office, and pick up at the warehouse. Before arrival, call us to clarify the availability of goods and order a pass to the business park.

How to pay for the goods?

Cash to the courier Upon receipt of the order, pay for the goods in cash to the courier. Bank transfer For legal entities we offer bank transfer.