Precision welded tubes

PRECISION WELDED TUBES

In our Crocetta del Montello (TV) plant we manufacture precision round and shaped electro-welded (HFI) tubes in compliance with the European EN 10305-3 and 10305-5 standards.

Our range includes:

Tubes from hot-rolled pickled strips (S2) with thicknesses from 1.4 to 3.0 mm, diameters from 10 to 76 mm and derived shapes (square, rectangular, oval, special profiles).
Tubes from cold-rolled strips (S3) with thicknesses from 0.5 to 2.5 mm, diameters from 9.5 to 60 mm and derived shapes (square, rectangular, oval, special profiles).
Tubes from coated strips (galvanized, zincmagnesium) (S4) with thicknesses from 0.6 to 3.0 mm, diameters from 14 to 76 mm and derived shapes (square, rectangular, oval, special profiles).
The outer welding seam can be zinc-coated.

All our production lines, with the latest technologies available on the market, enable us to manufacture the normal qualities provided by the standards:

+Cr1 from E195 to E355
+Cr2 from E190 to E600

In addition, in order to be in line with the qualitative developments which the automotive industry
especially demands, we have integrated our production range with tubes from Dual-Phase rolled strips (qualities up to HCT780X).

Tubes from cold-rolled strips can be manufactured using the cold re-rolled strips we produce, so that we can, in this case, guarantee surface roughness less than 0.4 microns, particularly tight thickness tolerances and “customized” mechanical characteristics.

ANCILLARY SERVICES

We can supply S2 and S3 tubes with internal welding seam removed upon our customers’ request starting from outer diameter 18 mm.
Our tubes are supplied at machine lengths from 3,000 to 13,000 mm with -0+10 mm tolerance.
Alternatively, we can supply cut to length tubes with lengths going from 150 to 3,000 mm with tolerances up to +/- 0.2 mm.
In this case the tubes may have brushed ends and can be washed.

TABLES AND DATA

Rounds

Squares

Rectangles

Round corner rectangles

Round corner squares

Elliptical

Ovals

Doors and windows tubes

Special sections

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Dimensions – Dimensioni mm	Thickness – Spessore mm
Rounds Tondi
	0,6	0,7	0,8	0,9	1	1,2	1,4	1,5	2	2,5	3
	Theoretical weight – Peso teorico Kg/m
9,5	0,132	0,152	0,172	0,191	0,21	0,246
9,85	0,137	0,158	0,178	0,199	0,218	0,256
10	0,139	0,16	0,181	0,202	0,222	0,26	0,297	0,314
10,88	0,152	0,176	0,199	0,221	0,244	0,286	0,327	0,347
11	0,154	0,178	0,201	0,224	0,246	0,29	0,331	0,351
11,92	0,167	0,194	0,219	0,244	0,269	0,317	0,363	0,385
11,95	0,168	0,194	0,22	0,245	0,27	0,318	0,364	0,386
12	0,169	0,195	0,221	0,246	0,271	0,319	0,366	0,388	0,493
12,5	0,176	0,204	0,231	0,257	0,283	0,334	0,383	0,407	0,518
12,6	0,177	0,205	0,233	0,26	0,286	0,337	0,386	0,41	0,523
12,66	0,178	0,206	0,234	0,261	0,287	0,339	0,389	0,413	0,526
12,8	0,18	0,209	0,237	0,264	0,291	0,343	0,393	0,418	0,532
13	0,183	0,212	0,241	0,268	0,296	0,349	0,4	0,425	0,542
13,85	0,196	0,227	0,257	0,287	0,317	0,374	0,43	0,457	0,584
13,9	0,197	0,228	0,258	0,288	0,318	0,376	0,431	0,458	0,587
13,92	0,197	0,228	0,259	0,289	0,318	0,376	0,432	0,459	0,588
13,95	0,197	0,229	0,259	0,29	0,319	0,377	0,433	0,46	0,589
14	0,198	0,229	0,26	0,291	0,32	0,379	0,435	0,462	0,592
15	0,213	0,247	0,28	0,313	0,345	0,408	0,469	0,499	0,641
15,1	0,214	0,248	0,282	0,315	0,348	0,411	0,473	0,503	0,646
15,8	0,225	0,261	0,296	0,331	0,365	0,432	0,497	0,529	0,68
16	0,228	0,264	0,3	0,335	0,37	0,438	0,504	0,536	0,69
16,2	0,231	0,267	0,304	0,339	0,375	0,444	0,511	0,544	0,7
17	0,243	0,281	0,319	0,357	0,394	0,467	0,538	0,573	0,739
18	0,257	0,298	0,339	0,379	0,419	0,497	0,573	0,61	0,789
18,5	0,265	0,307	0,349	0,39	0,431	0,512	0,59	0,629	0,813
19	0,272	0,316	0,359	0,402	0,444	0,527	0,607	0,647	0,838
20	0,287	0,333	0,379	0,424	0,468	0,556	0,642	0,684	0,887	1,078
20,1	0,288	0,335	0,381	0,426	0,471	0,559	0,645	0,688	0,892
20,2	0,29	0,336	0,383	0,428	0,473	0,562	0,649	0,691	0,897
20,9	0,3	0,349	0,396	0,444	0,491	0,583	0,673	0,717	0,932
21	0,302	0,35	0,398	0,446	0,493	0,586	0,676	0,721	0,937
21,2	0,305	0,354	0,402	0,45	0,498	0,592	0,683	0,728	0,947
22	0,316	0,368	0,418	0,468	0,518	0,615	0,711	0,758	0,986	1,202
22,2	0,319	0,371	0,422	0,473	0,523	0,621	0,718	0,765	0,996	1,214
23	0,331	0,385	0,438	0,49	0,542	0,645	0,745	0,795	1,035
23,5	0,339	0,393	0,448	0,501	0,555	0,66	0,763	0,813	1,06
24	0,346	0,402	0,457	0,512	0,567	0,674	0,78	0,832	1,085	1,325
24,1	0,348	0,404	0,459	0,515	0,569	0,677	0,783	0,836	1,089	1,331
24,2	0,349	0,405	0,461	0,517	0,572	0,68	0,787	0,839	1,094	1,337
25	0,361	0,419	0,477	0,535	0,592	0,704	0,814	0,869	1,134	1,387
25,2		0,423	0,481	0,539	0,597	0,71	0,821	0,876	1,144	1,399
25,4		0,426	0,485	0,544	0,601	0,716	0,828	0,884	1,154	1,411
25,6			0,489	0,548	0,606	0,722	0,835	0,891	1,163	1,423
26			0,497	0,557	0,616	0,734	0,849	0,906	1,183	1,448
27			0,517	0,579	0,641	0,763	0,883	0,943	1,232	1,51
28			0,536	0,601	0,666	0,793	0,918	0,98	1,282	1,571
28,6			0,548	0,614	0,68	0,81	0,939	1,002	1,311	1,608
29			0,556	0,623	0,69	0,822	0,952	1,017	1,331	1,633
30			0,576	0,646	0,715	0,852	0,987	1,054	1,38	1,695
31,7			0,609	0,683	0,757	0,902	1,046	1,117	1,464	1,799
32			0,615	0,69	0,764	0,911	1,056	1,128	1,479	1,818	2,144
33,5				0,723	0,801	0,955	1,108	1,183	1,553	1,91	2,255
34				0,734	0,813	0,97	1,125	1,202	1,578	1,941	2,292
35				0,756	0,838	1	1,159	1,239	1,627	2,003	2,366
38			0,734	0,823	0,912	1,088	1,263	1,35	1,775	2,188	2,588
40			0,773	0,867	0,961	1,148	1,332	1,423	1,873	2,311	2,736
41					0,986	1,177	1,367	1,46	1,923	2,372	2,81
42					1,011	1,207	1,401	1,497	1,972	2,434	2,884
43					1,035	1,236	1,436	1,534	2,021	2,496	2,958
44,5					1,072	1,281	1,487	1,59	2,095	2,588	3,069
45					1,085	1,296	1,505	1,608	2,12	2,619	3,106
48						1,384	1,608	1,719	2,268	2,804	3,328
50						1,443	1,677	1,793	2,366	2,927	3,476
51						1,473	1,712	1,83	2,416	2,989	3,549
52						1,503	1,746	1,867	2,465	3,05	3,623
55						1,591	1,85	1,978	2,613	3,235	3,845
56						1,621	1,884	2,015	2,662	3,297	3,919
57						1,65	1,919	2,052	2,711	3,358	3,993
60						1,739	2,022	2,163	2,859	3,543	4,215
60,5							2,039	2,181	2,884	3,574	4,252
63								2,274	3,007	3,728	4,437
63,5								2,292	3,032	3,759	4,474
70								2,533	3,352	4,16	4,954
76								2,755	3,648	4,529	5,398

Dimensions – Dimensioni mm	Thickness – Spessore mm
Squares Quadri
	0,7	0,8	0,9	1	1,2	1,4	1,5	2	2,5	3
	Theoretical weight – Peso teorico Kg/m
10 x 10	0,212	0,241	0,268	0,296	0,349	0,4	0,425
12 x 12	0,247	0,28	0,313	0,345	0,408	0,469	0,499	0,641
13 x 13	0,264	0,3	0,335	0,37	0,438	0,504	0,536	0,69
14 x 14	0,298	0,339	0,379	0,419	0,497	0,573	0,61	0,789
15 x 15	0,316	0,359	0,402	0,444	0,527	0,607	0,647	0,838
16 x 16	0,333	0,379	0,424	0,468	0,556	0,642	0,684	0,887
17 x 17	0,355	0,404	0,453	0,5	0,595	0,687	0,732	0,951
18 x 18	0,368	0,418	0,468	0,518	0,615	0,711	0,758	0,986
20 x 20	0,419	0,477	0,535	0,592	0,704	0,814	0,869	1,134	1,387
22 x 22	0,471	0,536	0,601	0,666	0,793	0,918	0,98	1,282	1,571
24 x 24	0,506	0,576	0,646	0,715	0,852	0,987	1,054	1,38	1,695
25 x 25	0,54	0,615	0,69	0,764	0,911	1,056	1,128	1,479	1,818
28 x 28			0,729	0,807	0,963	1,116	1,192	1,565	1,926
30 x 30			0,823	0,912	1,088	1,263	1,35	1,775	2,188	2,588
34 x 34				1,035	1,236	1,436	1,534	2,021	2,496	2,958
35 x 35				1,085	1,296	1,505	1,608	2,12	2,619	3,106
38 x 38				1,159	1,384	1,608	1,719	2,268	2,804	3,328
39,7 x 39,7				1,232	1,473	1,712	1,83	2,416	2,989	3,549
40 x 40				1,232	1,473	1,712	1,83	2,416	2,989	3,549
45 x 45						1,919	2,052	2,711	3,358	3,993
50 x 50						2,143	2,292	3,032	3,759	4,474
60 x 60						2,574	2,755	3,648	4,529	5,398

Dimensions – Dimensioni* mm	Thickness – Spessore mm
Rectangles Rettangoli
	0,7	0,8	0,9	1	1,2	1,4	1,5	2	2,5	3
	Theoretical weight – Peso teorico Kg/m
15 x 10	0,255	0,29	0,324	0,357	0,423	0,487	0,518
16 x 10	0,264	0,3	0,335	0,37	0,438	0,504	0,536
18 x 10	0,298	0,339	0,379	0,419	0,497	0,573	0,61
20 x 10	0,316	0,359	0,402	0,444	0,527	0,607	0,647
20 x 15	0,368	0,418	0,468	0,518	0,615	0,711	0,758	0,986
22 x 18	0,419	0,477	0,535	0,592	0,704	0,814	0,869	1,134
24 x 12	0,367	0,418	0,468	0,518	0,616	0,711	0,758
25 x 10	0,368	0,418	0,468	0,518	0,615	0,711	0,758
25 x 15	0,419	0,477	0,535	0,592	0,704	0,814	0,869	1,134
25 x 20	0,471	0,536	0,601	0,666	0,793	0,918	0,98	1,282	1,571
30 x 10	0,419	0,477	0,535	0,592	0,704	0,814	0,869
30 x 15	0,471	0,536	0,601	0,666	0,793	0,918	0,98	1,282
30 x 18	0,506	0,576	0,646	0,715	0,852	0,987	1,054	1,38
30 x 20	0,54	0,615	0,69	0,764	0,911	1,056	1,128	1,479	1,818
30 x 25	0,592	0,674	0,756	0,838	1	1,159	1,239	1,627	2,003	2,366
32 x 12	0,471	0,536	0,601	0,666	0,793	0,918	0,98
32 x 18	0,54	0,615	0,69	0,764	0,911	1,056	1,128	1,479
32 x 22		0,651	0,73	0,808	0,964	1,118	1,194	1,568	1,929	2,278
32 x 25		0,694	0,779	0,863	1,029	1,194	1,276	1,676	2,064	2,44
35 x 10		0,536	0,601	0,666	0,793	0,918	0,98
35 x 15		0,615	0,69	0,764	0,911	1,056	1,128	1,479
35 x 20		0,674	0,756	0,838	1	1,159	1,239	1,627	2,003
35 x 25		0,734	0,823	0,912	1,088	1,263	1,35	1,775	2,188	2,588
35 x 30		0,801	0,898	0,996	1,189	1,38	1,475	1,942	2,397	2,84
40 x 10		0,615	0,69	0,764	0,911	1,056	1,128
40 x 15		0,674	0,756	0,838	1	1,159	1,239	1,627
40 x 20		0,734	0,823	0,912	1,088	1,263	1,35	1,775	2,188	2,588
40 x 25		0,801	0,898	0,996	1,189	1,38	1,475	1,942	2,397	2,84
40 x 27		0,812	0,912	1,011	1,207	1,401	1,497	1,972	2,434	2,884
40 x 30			0,978	1,085	1,296	1,505	1,608	2,12	2,619	3,106
40 x 35			1,045	1,159	1,384	1,608	1,719	2,268	2,804	3,328
45 x 10			0,756	0,838	1	1,159	1,239
45 x 20			0,898	0,996	1,189	1,38	1,475	1,942	2,397	2,84
45 x 30			1,045	1,159	1,384	1,608	1,719	2,268	2,804	3,328
45 x 35			1,111	1,232	1,473	1,712	1,83	2,416	2,989	3,549
48 x 32			1,111	1,232	1,473	1,712	1,83	2,416	2,989	3,549
50 x 10			0,823	0,912	1,088	1,263	1,35
50 x 20			0,978	1,085	1,296	1,505	1,608	2,12	2,619	3,106
50 x 25			1,045	1,159	1,384	1,608	1,719	2,268	2,804	3,328
50 x 30			1,111	1,232	1,473	1,712	1,83	2,416	2,989	3,549
50 x 40					1,65	1,919	2,052	2,711	3,358	3,993
60 x 20					1,473	1,712	1,83	2,416	2,989	3,549
60 x 25					1,562	1,815	1,941	2,563	3,174	3,771
60 x 30					1,65	1,919	2,052	2,711	3,358	3,993
60 x 40					1,843	2,143	2,292	3,032	3,759	4,474
70 x 20					1,65	1,919	2,052	2,711	3,358	3,993
70 x 25					1,739	2,022	2,163	2,859	3,543	4,215
70 x 50						2,574	2,755	3,648	4,529	5,398
80 x 20						2,143	2,292	3,032	3,759	4,474
80 x 40						2,574	2,755	3,648	4,529	5,398
* The underlining indicates the possible side for welding * La sottolineatura indica il lato possibile di saldatura

Dimensions – Dimensioni* mm	Radius – Raggio	Thickness – Spessore mm
Round corner rectangles Rettangoli raggiati
		0,8	0,9	1	1,2	1,4	1,5	2
		Theoretical weight – Peso teorico Kg/m
30 x 20	3	0,582	0,652	0,722	0,861	0,997	1,065
30 x 20	6			0,688	0,819	0,949	1,013	1,326
30 x 25	5			0,769	0,926	1,08	1,161	1,543
35 x 20	3	0,641	0,721	0,801	0,967	1,108	1,183
35 x 20	4			0,785	0,936	1,085	1,159
35 x 20	6				0,911	1,059	1,124	1,494
40 x 20	4			0,863	1,03	1,194	1,276	1,677
40 x 25	5			0,929	1,109	1,287	1,375	1,809
40 x 30	5			1,018	1,216	1,411	1,509	1,987
45 x 25	6				1,195	1,391	1,479	1,967
45 x 30	5				1,302	1,518	1,631	2,17
50 x 30	5				1,402	1,629	1,741	2,297
60 x 30	5				1,586	1,857	1,986	2,643
61 x 31	5				1,621	1,884	2,015	2,662
70 x 30	5				1,784	2,074	2,218	2,933
* The underlining indicates the possible side for welding * La sottolineatura indica il lato possibile di saldatura

Dimensions – Dimensioni mm	Radius – Raggio	Thickness – Spessore mm
Round corner squares Quadri raggiati
		0,8	0,9	1	1,2	1,4	1,5	2
		Theoretical weight – Peso teorico Kg/m
18 x 18	2	0,418	0,468	0,518	0,615
18 x 18	3	0,402	0,457	0,503	0,612
18 x 18	4	0,39	0,453	0,485	0,6	0,687	0,773
20 x 20	6			0,525	0,63	0,728	0,773	1,025
22 x 22	4			0,651	0,775	0,897	0,958	1,252
25 x 25	2,5	0,612	0,686	0,76	0,906	0,105	1,121
25 x 25	5			0,69	0,831	0,97	1,043	1,385
35 x 35	5			1,006	1,21	1,401	1,512	2,012
60 x 60	2,7			1,858	2,223	2,587	2,768	3,666