Stainless Steel Round Tubes, Stainless Steel Section Tubes, Stainless Steel Schedule Pipes, Stainless Steel Pipes Tubes

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CIRP
- List of claim as on 04.10.2023
- FORM-A

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Product Range

SPS Autotubes Pvt. Ltd. commenced manufacturing operations at Dangarwa near Ahmedabad with the set up of continuous tube mill to, make a stainless steel welded tubes (ERW) in 2003.

round tubing series

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American Schedule Piping series

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Square tubing series

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Rectangle tubing series

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Manufacturing Process

The manufacturing of stainless steel welded tubes is carried out on custom designed,sophisticated tube mills where stainless steel strips,slit to precise widths, are continuously formed into a tubular shape and welded by Tungsten - Inert-Gas(TIG) welding

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For Round

OD/ Thickness ( mm )	Weight / Thickness
OD/ Thickness ( mm )	1.0	1.2	1.5	1.6	2.0	2.3	2.5	2.6	3.0
25.40	0.611	0.727	0.898	0.954	1.172	1.33	1.434	1.484	1.667
28.70	0.687	0.818	1.012	1.075	1.324	1.506	1.625	1.683	1.912
31.80	0.771	0.919	1.138	1.21	1.492	1.699	1.834	1.901	2.163
38.10	0.920	1.098	1.362	1.448	1.791	2.042	2.207	2.289	2.612
42.60	1.032	1.232	1.529	1.627	1.334	2.299	2.486	2.579	2.947
48.30	1.173	1.402	1.741	1.853	2.297	2.624	2.840	2.947	3.371
50.80	1.247	1.49	1.852	1.971	2.444	2.793	3.024	3.138	3.591
57.10	1.391	1.664	2.069	2.202	2.733	3.126	3.386	3.515	4.026
63.50	---	1.872	2.329	2.48	3.08	3.525	3.819	3.965	4.545

For Square & Rectangle

OD/ Thickness ( mm )	Weight / Thickness
OD/ Thickness ( mm )	1.2	1.5	2.0	3.0	3.2	3.5	4.0
20 × 20	0.727	0.898	0.594	1.667	---	---	---
25 × 25	0.925	1.145	1.495	2.216	---	---	---
20 × 40	1.106	1.371	1.480	---	---	---	---
30 × 30	1.106	1.371	1.840	---	2.720	---	---
25 × 50	1.393	1.730	2.282	3.456	---	---	---
40 × 40	1.496	1.859	2.454	3.756	---	4.808	---
50 × 50	1.556	2.329	3.080	4.650	---	5.208	5.960
40 × 60	---	2.307	3.051	4.502	---	---	---

SPS as per ASTM	%C (Max)	%Mn (Max)	%P (Max)	%S (Max)	%Si (Max)	%Cr	%Ni	%N (Max)
Austenitic Cr-Mn*
(201 0.3% Ni)	0.13	11.0	0.1	0.015	0.750	14.0-15.25	0.40	0.200
(201 1% Ni)	0.100	10.0	0.080	0.010	0.750	15.0-16.0	1.00-2.00	0.200
(202 3% Ni)	0.150	9.75-10.75	0.100	0.020	0.750	14.50-16.00	0.40-0.55	0.200
304	0.080	2.00	0.045	0.030	0.750	18.00-20.00	8.00-12.00	0.100
316L	0.030	2.00	0.045	0.030	0.750	16.00-18.00	10.00-14.00	0.100
409M	0.030	1.50	0.040	0.015	1.000	10.50-12.50	0.30-1.00	0.030
409L	0.030	1.00	0.040	0.020	1.000	10.50-11.70	0.50	0.030
436L	0.025	1.00	0.040	0.030	1.000	16.00-19.00	0.50	0.025
439	0.030	1.00	0.040	0.030	1.000	17.00-19.00	0.50	0.030
441	0.030	1.00	0.040	0.015	1.000	17.50-18.50	---	---

Specification	Allowable Outsite Diameter Variations in (mm)			Allowable Wall Thickness Variantions		Exact Lengh Tolerances in(mm)		Testing
Specification	Nominal Dia.	Over	Nominal Dia.	Over %	Under %	Over	Under	Testing
ASTM A -270 Welded Sanitary Tubing	25.4	0.05	0.20	+12.5	-12.5	3.2	0	Reverse Flattening Test, 100% Hydrostatic Test, External Polish on all Tubes Refer to ASTM A - 270.
	38.1	0.05	0.20	+12.5	-12.5	3.2	0
	50.8	0.05	0.28	+12.5	-12.5	3.2	0
	63.8	0.05	0.28	+12.5	-12.5	3.2	0
	76.2	0.08	0.30	+12.5	-12.5	3.2	0
ASTM A -312 Welded Pipe	13.7 - 48.3 incl	0.40	0.80	Minimum Wall 12.5% under nominal wall speciﬁed		6.4 6.4	0 0	Tensile Test, Flattening Test, 100% Hydrostatic Test, Refer to ASTM A - 270.
ASTM A -312 Welded Pipe	48.3 - 114.3 incl	0.80	0.80	Minimum Wall 12.5% under nominal wall speciﬁed		(Normally Random Lengths Ordered)
ASTM A - 554 Welded Tube & Sanitary Tube	Under 25.4	0.25	0.25	+10	-10	4.80	0	Flattening Test, Flare Test, Hardness Test, More Tests as per customer's requirements Refer to ASTM A - 554.
	25.4-38.1	0.20	0.25	+10	-10	4.80	0
	38.1-50.8	0.25	0.20	+10	-10	4.80	0
	50.8-63.5	0.30	0.30	+10	-10	4.80	0
	63.5-76.2	0.36	0.36	+10	-10	4.80	0
	76.2-88.9	0.51	0.51	+10	-10	4.80	0