SPIRAL WELDED PIPES

Pipe production

U. S. Steel Košice, s.r.o. is producing SAW (Submerged arc welding) spiral pipes on two welding lines with an annual production capacity 80,000-100,000 tons per year.

Spiral welded steel pipes are made of low carbon as well as micro alloyed HSLA steel from hot rolled substrate produced at U. S. Steel Košice.

TECHNICAL SPECIFICATION

PIPE PRODUCTION

Production program

U. S. Steel Košice, s.r.o. is producing SAW (Submerged arc welding) spiral pipes on two welding lines with annual production capacity 80,000-100,000 tons per year. Spiral welded steel pipes are made of low carbon as well as micro alloyed HSLA steel from hot rolled substrate produced at U. S. Steel Košice.
U. S. Steel Košice produces pipes in sizes ranging from 406 mm to 1422 mm outside diameter, wall thickness from 5,0 mm to 14,2 mm and length from 8 m to 18 m.
The pipes are delivered in accordance with EN, DIN, API and ISO standards or in accordance with agreed terms or standards.
Pipe production has a long tradition with the first spiral welded pipe manufactured in 1960 as the first product produced at the plant. For almost 50 years we have supplied most European countries and the countries of the former Soviet Union. The main sectors supplied include pipes for the transport of gas, oil and water as well as pipes for the construction markets.

Testing

Each pipe undergoes a series of non-destructive tests: - ultrasonic test, X-ray test, pressure test and visual inspection of surface and welds from outside and from inside the pipe. All results are recorded and archived.

Certificates and Quality Control System

The production process is certified according to EN ISO 9001; EN ISO 14001; API Spec.Q1 standards by American Petroleum Institute.
In addition, the high quality of our pipes has been confirmed by following product certificates:

• Certification of Quality Assurance System for Material Manufacturer acc. to Directive 97/23/EC and AD 2000-Merkblatt W0
• Certification of Factory Production Control according to EN 10219-1 for Structural Sections
• Certification of Conformity with EN ISO 3834-2
• Certification of Conformity with Act No. 264/1999 Coll. and Act No.90/1998 Coll. (Slovak legislation)
• Certification of Conformity for Ukrainian and Polish market

Basic dimension

Dimensions [mm]	minimum	maximum
diameter	406	1 422
wall thickness	5,0	12,7 (14,2*)
Standard lengths	8,0	18,0

Principal Fields of Application

•   Gas distribution pipelines
•   Crude oil pipelines
•   Hot water conduits
•   Potable water distribution
•   Sewage conduits
•   Civil engineering and structural purposes

Surface Protection

Pipes are delivered without surface treatment. Surface insulation provided for by a third party is subject to prior agreement

Special Requirements

Any special requirements exceeding the above standards are to be agreed upon before concluding the contract.

SPIRAL WELDED PIPES IN ACCORDANCE WITH EN

STANDARD	GRADE	APPLICATIONS
EN 10217-1	P 235 TR1, P235 TR2, P265 TR1, P265 TR2	Steel pipes for high pressure purposes. Technical conditions of supply. Part 1: Non-alloyed steel pipes with specific properties under surrounding enviroment temperature
EN 10217-3	P 355 N, P 355 NH	Steel pipes for pressure prposes. Technical conditions of supply. Part 3: Alloyed steel pipes of fine grained steel
EN 10217-5	P 235 GH, P 265 GH	Steel pipes for high pressure purposes. Technical conditions of supply. Part 5: Non-alloyed and alloyed steel pipes welded under flux with specific properties under higher temperature.
EN 10224	L 235, L 275, L 355	Non-alloyed steel pipes and shaped pices for transport of liquids, drinking water inclusive. Technical conditions of supply,
EN 10219-1,2	S 235 JRH, S 275 J0H, S 275 J2H, S 355 J0H, S355 J2H	Welded hollow section made of non-alloyed and fine-grained cold-formed steel. Part 1: Technical condition of supply. Part 2: Tolerances, dimensions and cross-section properties.
ISO 3183 PSL1	L 245-B, L 220-X42, L 320-X46, L 360-X52, L390-X56, L415-X60, L 450-X65, L 485-X70	Petroleum and gas industry. Steel pipes for pipeline transport system.
ISO 3183 PSL2	L 245M-BM, L 290M-X42M, L 320M-X46M, L 360M-X52M, L 390M-X56M, L 415M-X60M, L 450M-X65M, L 485M-X70M	Petroleum and gas industry. Steel pipes for pipeline transport system.
ISO 3183 PSL2	L 245ME-BME, L 290ME-X42ME, L 360ME-X52ME, L 415ME-X60ME, L 450ME-X65ME, L 485ME-X70ME	Petroleum and gas industry-Steel pipes for pipeline transport system. Appendix M - Steel PSL2 prdered for european inland gas lines assigned for natural gas transport.
API SPEC.5L PSL1	L 245-B, L 290-X42, L 320-X46, L 360-X52, L 390-X56, L 415-X60, L 450-X65, L 485-X70	Pipes Specification API Spec. 5L
API SPEC.5L PSL2	L 245M-BM, L 290M-X42M, L 320M-X46M, L 360M-X52M, L 390M-X56M, L 415M-X60M, L 450M-X65M, L 485M-X70M	Pipes Specification API Spec. 5L

PIPES IN ACCORDANCE WITH SEVERAL RELEVANT STANDARDS

GRADE	STANDARD
BM PSL2 /L 245 M PSL2 / P 235 TR2 / P 235 GH / S 235 JRH	API Spec 5L / ISO 3183 / EN 10 217 -1 /EN 10 217 -5 / EN 10 219
S 355 J2H / X 52 PSL 1 /L 360 PSL 1	EN 10 219 / API Spec 5L / ISO 3183

SPIRAL WELDED DIMENSIONS AND WEIGHTS EN 10 220

OUTER DIAMETER		Wall thickness
(mm)		5,00	5,60	6,30	7,10	8,00	8,80	9,50	10,00	11,00	12,00	12,50	12,70	14,2*
(mm)	(inch)	0,197	0,220	0,248	0,280	0,315	0,346	0,374	0,394	0,433	0,472	0,492	0,500	0,559
406,4	16	49,5	55,4	62,2	69,9	78,6	86,3	93,0
426		51,9	58,1	65,2	73,3	82,5	90,5	97,6	103	113	123	127	129
457	18	55,7	62,3	70,0	78,8	88,6	97,3	105	110	121	132	137	139
508	20	62,0	69,4	77,9	87,7	98,6	108	117	123	135	147	153	155
530		64,7	72,4	81,4	91,6	103	113	122	128	141	153	160	162
559	22	68,3	76,4	85,9	96,6	109	119	129	135	149	162	168	171
610	24	74,6	83,5	93,8	106	119	130	141	148	162	177	184	187
630		77,1	86,2	96,9	109	123	135	145	153	168	183	190	193
660	26	80,8	90,4	102	114	129	141	152	160	176	192	200	203
711	28	87,1	97,4	109	123	139	152	164	173	190	207	215	219
720		88,2	98,7	111	125	140	154	166	175	192	210	218	222
762	30	93,3	104	117	132	149	163	176	185	204	222	231	235
813	32	99,6	112	125	141	159	175	188	198	218	237	247	251	280
864				133	150	169	186	200	211	231	252	262	267	298
914	36			141	159	179	196	212	223	245	267	278	282	315
965	38			149	168	189	208	224	236	259	282	294	298	333
1 016	40			157	177	199	219	236	248	273	297	309	314	351
1 020				157	177	200	219	237	249	274	298	311	315	352
1 067					186	209	230	248	261	286	312	325	330	369
1 118	44				195	219	241	260	273	300	327	341	346	387
1 120					195	219	241	260	274	301	328	341	347	387
1 219	48					239	263	283	298	328	357	372	378	422
1 220						239	263	284	298	328	357	372	378	422
1 320						259	285	307	323	355	387	403	409	457
1 321	52					259	285	307	323	355	387	403	410	458
1 420						279	306	330	348	382	417	434	441	492
1 422	56					279	307	331	348	383	417	435	441	493