Seminox Pipes and Tubes Pvt. Limited

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Stainless Steel Instrumentation Tubing Manufacturer in India

Mumbai, India

Seminox Pipes

Year of establishment

2022

Total export experience (in Years)

Nature of Business

Exporters, Manufacturer

Third Party Inspection

Yes

Custom Sizes

Yes

Custom Packaging

Yes

MTC Report

Yes

Major clients in the Middle East

N/A

What is Stainless Steel Instrumentation Tubing?

There are 2 types of tubing used to convey fluids and gases which are suction tubes and Instrumentation Tubing. Suction Tubes typically used to handle large volumes of fluids. While, SS instruments tubes are installed in the piping system to flow fluids and gases with measurement and accurate control. Stainless Steel Instrumentation Tubing is a kind of tubes which is generally preferred for industrial use where high temperature, chemicals or high pressure is involved as it is designed for usage in extreme conditions.

Oil and gas, chemical processing, pharmaceuticals, and power generation plants require these SS Instrumentation Tubing in many grades, finish, and sizes. These tubes are manufactured in the specific sizes from 1/8 inch to 2 inches OD in 0.71 mm to 3.05 mm wall thickness range. Stainless Steel Instrumentation Tubing comes with various surface finishes such as Bright Annealed, Electropolished, Polished, Pickled and Passivated. Pharmaceutical sector require ultra-smooth surface Stainless Steel Instrumentation Tubing to maintain the hygiene and high-purity.

Differential gauges are used to measure pressure rating of instrument tubing. These tubes are also called pressure gauge tube. The pressure range of stainless instrument tubing are 100 PSI, 500 PSI, and 3000 PSI. There may be different units such as PSI, bar, Pa, kPa, or MPa to measure bright annealed tubes pressure rating. These tubing end should be NPT or BSP to connect with tube fittings.

Stainless steel tubing in instrumentation

These tubes comes in many grades such as 34, 304L, 316, 316L, 321, 347, and 904L. SS 304 Instrumentation Tubes have Good corrosion resistance and mainly used for General Instrumentation. SUS 316 Instrument Tubing is the higher grade after 304. These 316 Bright Annealed Instrumentation Tubes have higher corrosion resistance and can be used in chlorides. 316 Stainless steel Instrument Tubes are a great example of instrumentation tubes which are used in industrial work which involve high pressure work. 321 grade is Stabilized by titanium and a perfect choice for high pressure applications. The another grade of Stainless Steel Instrumentation Tubing is ASTM A269 Grade 347 which is mainly used in Aerospace sector.

Another superior grade is 904L Instrumentation Tube which contain High alloy content. Some Stainless Steel Instrumentation Tubing manufacturers also count this grade in their high nickel alloy category. SS 904L bright annealed tubes are high in demand in Saudi Arabia due to its strength against Aggressive Environments. However AISI 904L tubing is very expensive among other stainless steel grades. So, this grade is not available easily with any local trader, stockist or distributor.

Seminox Pipes and Tubes Pvt. Limited is a PED certified stainless steel instrumentation tubing manufacturer in India. They produce bright annealed tubes in SUS 304 and AISI 316 up to OD 1/2". These instrument tubes are manufactured accordance to ASTM specifications. The American standard includes ASTM A213, ASTM A269, ASTM A312, ASTM A511 (Mechanical tubing), and ASTM A632 (small diameter stainless steel tubing).

Seminox Pipes and Tubes offer MTC 3.1/3.2, Certificate of Compliance, Dimensional Inspection Report, Packing List, and Bill of Lading (BoL) with the dispatch. However, they also offer other data and reports if required like third party inspection report. Their sales team at Seminox reply quickly with the required technical data. The data may include Composition, Mechanical Properties, Material Age (if available in Ex-stock), Dimensional Tolerances, Surface Finish, Pressure Ratings, and Corrosion Resistance Data.

Stainless Steel Instrumentation Tubing Manufacturer in India

Stainless Steel Instrumentation Tubing Specification

Sizes : 1/8”OD – 3”OD Seamless and Welded tubes

Grades : A213/A269 304/L, 316/L

Schedule: 5S, 10S

Standard : ASTM A213, A778, A789, A269, EN 10216-5

Quote within 24Hrs with Technical Data Sheet

100% Tested SS Instrumentation Tubing supply with MTC EN 10204/3.1

Who they are?

Stainless Steel Instrumentation Tubing Manufacturer in India

Supplier of 304 Seamless Stainless Steel Instrumentation Tubing in Mumbai

Bright Annealed Instrumentation Tubes manufacturer in India

Exporter of Instrumentation Tubes in Mumbai

Manufacturer of Instrumentation Tubes in India

Theoretical Bursting Pressures of Instrumentation Tubes

O.D. (Decimal)	O.D. (Fraction)	Nominal Instrument Tube Wall Thickness (Inches)
O.D. (Decimal)	O.D. (Fraction)	0.028	0.035	0.049	0.058	0.065	0.072	0.083	0.095	0.109	0.120
0.125	1/8	6109	7636	10691	–	–	–	–	–	–	–
0.125	1/8	20160	25200	35280	–	–	–	–	–	–	–
1.125	1 1/8	679	848	1188	1406	1576	1745	2012	2303	2642	2909
1.125	1 1/8	2240	2800	3920	4640	5200	5760	6640	7600	8720	9600
1.750	1 3/4	436	545	764	904	1013	1122	1294	1481	1699	1870
1.750	1 3/4	1440	1800	2520	2983	3343	3703	4269	4886	5606	6171
0.188	3/16	4062	5077	7108	–	–	–	–	–	–	–
0.188	3/16	13404	16755	23457	–	–	–	–	–	–	–
1.500	1 1/2	509	636	891	1055	1182	1309	1509	1727	1982	2182
1.500	1 1/2	1680	2100	2940	3480	3900	4320	4980	5700	6540	7200
0.438	7/16	1743	2179	3051	3611	4047	4483	5168	5915	6787	7472
0.438	7/16	5753	7192	10068	11918	13356	14795	17055	19521	22397	24658
0.875	7/8	873	1091	1527	1808	2026	2244	2587	2961	3397	3740
0.875	7/8	2880	3600	5040	5966	6686	7406	8537	9771	11211	12343
0.313	5/16	2440	3050	4270	5054	5664	6274	7232	–	–	–
0.313	5/16	8051	10064	14089	16677	18690	20703	23866	–	–	–
0.250	1/4	3055	3818	5345	6327	7091	–	–	–	–	–
0.250	1/4	10080	12600	17640	20880	23400	–	–	–	–	–
0.563	9/16	1356	1695	2374	2810	3149	3488	4021	4602	5280	5813
0.563	9/16	4476	5595	7833	9272	10391	11510	13268	15187	17425	19183
0.625	5/8	1222	1527	2138	2531	2836	3142	3622	4145	4756	5236
0.625	5/8	4032	5040	7056	8352	9360	10368	11952	13680	15696	17280
0.688	11/16	1110	1387	1942	2299	2577	2854	3290	3766	4321	4757
0.688	11/16	3663	4578	6410	7587	8503	9419	10858	12427	14259	15698
1.250	1 1/4	611	764	1069	1265	1418	1571	1811	2073	2378	2618
1.250	1 1/4	2016	2520	3528	4176	4680	5184	5976	6840	7848	8640
0.375	3/8	2036	2545	3564	4218	4727	5236	6036	6909	7927	8727
0.375	3/8	6720	8400	11760	13920	15600	17280	19920	22800	26160	28800
0.750	3/4	1018	1273	1782	2109	2364	2618	3018	3455	3964	4364
0.750	3/4	3360	4200	5880	6960	7800	8640	9960	11400	13080	14400
1.000	1	764	955	1336	1582	1773	1964	2264	2591	2973	3273
1.000	1	2520	3150	4410	5220	5850	6480	7470	8550	9810	10800
0.500	1/2	1527	1909	2673	3164	3545	3927	4527	5182	5945	6545
0.500	1/2	5040	6300	8820	10440	11700	12960	14940	17100	19620	21600
2.000	2	382	477	668	791	886	982	1132	1295	1486	1636
2.000	2	1260	1575	2205	2610	2925	3240	3735	4275	4905	5400

What is the Difference in Annealed and Bright Annealed Condition?

Bright Annealed Instrumentation Tubes Manufacturers in India

Difference between	Annealed Condition	Bright Annealed Condition
Physical appreance	Dull and matte finish	Bright and reflective finish
SS 304 Instrumentation Tubing Tensile Strength	485 MPa	485 MPa
Life	15-20 years	20-25 years
Approx Price of SS 304 Instrument Tubes Ex Mumbai, India	FOB Price US $2.8 – US $3.2/kg	FOB Price US $3.5 – US $4.0/kg
Post-Treatment	Require pickling or polishing	Not required
Uses	Automotive parts Structural components Mechanical parts	Medical instruments Food-grade equipment Decorative panels

Size Range of 304 SS Instrumentation Tubes

Supplier of 304 Seamless Stainless Steel Instrumentation Tubing in Mumbai

Description	OD	Wall
1/4 X .035 WA	0.2500	0.0350
1/4 X .049 WA	0.2500	0.0490
1/4 X .049 WA	0.2500	0.0490
1/4 X .065 WA	0.2500	0.0650
3/8 X .049WA	0.3750	0.0490
3/8 X .035 WA	0.3750	0.0350
3/8 OD X .049 WA	0.3750	0.0490
3/8 OD X .065 WA	0.3750	0.0650
3/8 X .035 WA	0.3750	0.0350
3/8 OD X .049 WA	0.3750	0.0490

What is the meaning of Pickled condition and Mill finish?

Steel pickling is a metal surfaced treatment given to the material to remove impurities like stains or rust from its surface which results in a pickled condition. On other side, mill finish is a dull, untreated and raw looking finish after the material exits a rolling mill which are then turned into industrial materials such as instrumentation tubes.

Difference between 304 Welded and Seamless Instrument Tubes

Know Difference between	SS 304 Welded Instrument Tubes	INOX 304 Seamless Instrument Tubes
Method followed by the manufacturers	Manufactured from rolling a flat A240 Type 304 strip	Manufactured via solid stainless steel billet
Manufacturing sizes, Diameter	up to 24 inches	up to 12 inches
Wall Thickness (WT)	Slightly thicker at the weld seam	Seamless, no weld seam
Tensile Strength	515 MPa	520 MPa
Physical Appearance	Weld marks are visible, to reduce these welding marks tubes can be polished	No marks, smooth finish
Tolerance (Diameter)	Tighter tolerances on OD: ±0.5% of OD	Tighter tolerances on ID & OD: ±10% of WT
Tolerance (Wall Thickness)	±10% of WT	±5% of WT
Pressure Range	up to 6,000 PSI	up to 10,000 PSI
Bursting Pressure of 1/4" OD tube	3,200 PSI	5,000 PSI
Elongation	35%	40%
Applications	HVAC Low-pressure hydraulics	Oil & gas Chemical processing

What kind of polishes comes on SS Instrumentation Tubing?

SS Instrumentation Tubing Polishes

Top 5 Easy Ways to Recognize 304L and 316L SS Instrumentation Tubing?

Ways to recognize	SS 304L Instrumentation Tubing	316L Stainless Steel Instrumentation Tubing
Magnetism	Slight magnetic if manufactured via Cold worked But non-magnetic if annealed	Non-magnetic in all conditions
Quick Acid Test with nitric acid (HNO₃).	Color will change if 304L	No change in color if the grade is 316L
Molybdenum Content	NA	2-3% molybdenum
Manufacturer’s Marking	Marked with “304L” or “1.4307”	Marked with “316L” or “1.4404”
Mill Test Report (MTR)	Will confirm the grade 304L on the report	Will confirm the grade 316L on the report
Origin of material	China origin 304L Instrumentation tubing are marked with GB/T 20878	China origin 316L Instrumentation tubing are marked with GB/T 1220

Why Demand of Stainless Steel Instrumentation Tubing is increasing in MENA Countries?

MENA word is made for Middle East and North African countries. Algeria, Bahrain, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Mauritania, Morocco, Oman, Palestine, Qatar, Saudi Arabia, Syria, Tunisia, United Arab Emirates (UAE), and Yemen comes under MENA country list. SS instrumentation tubes have seen a substantial rise in MENA countries for the past few years due to its cost efficient nature. So the local demand is increasing here.

Industrial Sector	Top 5 MENA Countries	Estimated Number of Projects	Industrial growth in Last 5 years (Updated in 2024)
Oil and Gas	Saudi Arabia UAE Qatar Iraq Kuwait	Over 1,000	15-20%
Chemical Processing	Saudi Arabia UAE Egypt Oman Bahrain	Approximately 200-300	10-15%
Power Generation	Saudi Arabia UAE Egypt Qatar Kuwait	Around 500 power plants and other projects	20-25%
Water Treatment	Saudi Arabia UAE Egypt Jordan Morocco	Over 150 plants	18-22%
Aerospace and Defense	UAE Saudi Arabia Qatar Jordan Egypt	50-100 projects	12-18%
Pharmaceutical	UAE Saudi Arabia Egypt Jordan Morocco	100-150 manufacturing and processing industry	8-12%

If we sort the MENA countries by these sectors, Saudi Arabia appears everywhere in the top 5. This is a key reason why Stainless Steel Instrumentation Tubing manufacturers in India export over 65% of their products to top cities in Saudi Arabia, including Riyadh, Jeddah, Dhahran, Khobar, and Dammam.

316 SS Instrumentation Tubing Price

1/4” to 1/2” Outside Diameter SS Instrumentation Tubing Price List EX Mumbai

SS 316 Instrumentation Tubing dimensions	Length	FOB Price in USD
1/8" x 0.035 thk	0.035-2-feet	US $8.19
1/8" x 0.035 thk	0.035-6-feet	US $22.80
1/8" x 0.035 thk	0.035-200-feet	US $584.61
1/4" x 0.020 thk	0.020-2-feet	US $8.16
1/4" x 0.020 thk	0.020-6-feet	US $22.71
1/4" x 0.020 thk	0.020-200-feet	US $582.42
1/4" x 0.028 thk	0.028-2-feet	US $7.15
1/4" x 0.028 thk	0.028-6-feet	US $19.89
1/4" x 0.028 thk	0.028-200-feet	US $509.89
1/4" 0.035" thk	0.035-2-feet	US $4.57
1/4" 0.035" thk	0.035-6-feet	US $14.14

Top 7 list of countries import SS Instrumentation Tubing from India

Accordance to last 6 years import value, here is the list of top 7 countries who import Seamless Stainless Steel Instrumentation Tubing from India

Saudi Arabia
United Arab Emirates (UAE)
Qatar
Kuwait
Oman
Egypt
Jordan

316 Stainless Steel Instrument Tubes in Annealed and Pickled conditions Ex Stock Mumbai with MTC at Discounted Price for Traders and Suppliers in Dubai and Saudi Arabia.

Size Chart of 316/316L Stainless Steel Instrument Tubes

Description	OD	Wall
1/4 X .049WA	0.2500	0.0490
1/4 X .049 WA	0.2500	0.0490
1/4 X .035 WA	0.2500	0.0350
1/4 X .035	0.2500	0.0350
1/4 X .065 WA	0.2500	0.0650
3/8 X .035WA	0.3750	0.0350
3/8 OD X .049 WA	0.3750	0.0490
3/8 OD X .065 WA	0.3750	0.0650
3/8 OD X .035 WA	0.3750	0.0350
3/8 OD X .049 WA	0.3750	0.0490

Price Difference between AISI 304 and AISI 316 Instrumentation Tubes

	SS Instrumentation Tubes
Size Range	AISI 304	AISI 316
1/2" NB	US $ 15.85	US $ 21.56
3/4" NB	US $ 21.10	US $ 27.30
1" NB	US $ 25.17	US $ 36.08
1-1/4" NB	US $ 35.14	US $ 47.96
1-1/2" NB	US $ 39.22	US $ 53.69
2" NB	US $ 51.80	US $ 73.50

Seminox Pipes and Tubes is a No. 1 Manufacturer, exporter & Supplier of 304 Seamless Stainless Steel Instrumentation Tubes in India. Offer wide range of sizes and thickness in Ex-stock and fastest delivery to Middle east countries.

Applications of Instrumentation Tubing

5 Advantages of Buying Material Directly from Manufacturers in India

As per the recent Import ratio of Stainless Steel Instrumentation Tubing in Middle East countries, here is the 5 advantages. These points are based on buyers feedback.

Advantages	Details
Cost	If you are looking for bulk material then buying them from manufacturers save cost.
Quality Assurance	Manufacturers want to maintain their Brand Name hence they follow strict quality as per the International standards
Customized requirements in sizes or value added services	Manufacturers have in house facilities for cutting, bending, welding, or polishing so they can offer all these services at very nominal cost
Faster Delivery	Leading manufacturers have their own inventory in UAE, Saudi Arabia, or other countries to distribute the material faster locally.
After Sales Services and Clear Communication	This is a major reason to choose the Stainless Steel Instrumentation Tubing manufacturers instead of a trader, supplier or stockist

Chemical Composition of Stainless Steel Instrumentation Tubing

Grade	Cr	C	Ni	Mn	Si	P	S
304	18.0-20.0	.08	8.0-11.0	2.00	1.00	.045	.030
304L	18.0-20.0	.030	8.0-12.0	2.00	1.00	.045	.030
316	16.0-18.0	.08	10.0-14.0	2.00	1.00	.045	.030
316L	16.0-18.0	.030	10.0-14.0	2.00	1.00	.045	.030

SS Instrument Tubes Mechanical Properties

Grades	Tensile
	Ultimate		Yield		Elongation
	KSI	MPA	KSI	MPA	%
304	75	515	30	205	35
304L	70	485	25	170	35
316	75	515	30	205	35
316L	70	485	25	170	35

Certificates of Manufacturer

ISO 9001 : 2015 Certificate

ISO 14001 : 2015 Certificate

ISO 45001 : 2018 Certificate

PED Certificate

Annexure PED Certificate

Factory License

Seminox Pipes And Tubes Head Office

Packaging and Dispatch

Events & Exhibition

Company Profile

Nature of Business	Manufacturer & Exporter
Import Export Code (IEC)	ABJCS0991D
Legal Status of firm	Pvt Ltd
GST No.	27ABJCS0991D1Z7

Contact Info

Contact Person	Mr. Aaditya Sanghvi
Phone	+91 9987403801
Email	sales@seminoxpipes.com
Mumbai Head Office	Seminox Pipes and Tubes Pvt. Limited 114/115, 1 st Floor, Regal Diamond Center, Tata Road No. 1, Mumbai- 400004, India
Manufacturing Unit	Seminox Pipes and Tubes Pvt. Limited Plot No. 1 of Gut No.2 & Plot No. 3 of Gut No. 2, Khupari, Maharashtra 421312, India

sales@seminoxpipes.com