Instrument Tube & Precision Tubing

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Instrument Tube

Material

Stainless steel	304/304L, 316/316L, 316LN, 316Ti, 310S, 321, 317L
Duplex	S31803, S32205, S32750
Alloy metal	TITANIUM GR.2, ALLOY 600, ALLOY 625, ALLOY 825

Application code

ASTM, ASME, AISI, DIN, JIS, KS

General size of Instrument tube

No	O.D x W.T
1	6mm X 1.0 mm
2	6mm X 1.5 mm
3	8mm X 1.0 mm
4	8mm X 1.2 mm
5	8mm X 1.5 mm
6	8mm X 2.0 mm
7	10mm X 1.0 mm
8	10mm X 1.2 mm
9	10mm X 1.5 mm
10	10mm X 2.0 mm
11	12mm X 1.0 mm
12	12mm X 1.2 mm
13	12mm X 1.5 mm
14	12mm X 2.0 mm
15	15mm X 1.0 mm
16	15mm X 1.2 mm
17	15mm X 1.5 mm
18	15mm X 2.0 mm
19	15mm X 2.5 mm
20	16mm X 1.5 mm
21	16mm X 2.0 mm
22	16mm X 2.5 mm
23	18mm X 1.2 mm
24	18mm X 1.5 mm
25	18mm X 2.0 mm
26	20mm X 1.0 mm
27	20mm X 1.5 mm
28	20mm X 2.0 mm
29	20mm X 2.5 mm
30	22mm X 1.5 mm

No	O.D x W.T
31		22mm X 2.0 mm
32		22mm X 2.5 mm
33		25mm X 2.0 mm
34		25mm X 2.5 mm
35		25mm X 3.0 mm
36		28mm X 2.0 mm
37		28mm X 2.5 mm
38		28mm X 3.0 mm
39		30mm X 2.0 mm
40		30mm X 2.5 mm
41		30mm X 3.0 mm
42		30mm X 4.0 mm
43		35mm X 2.0 mm
44		35mm X 2.5 mm
45		35mm X 3.0 mm
46		38mm X 3.0 mm
47		38mm X 4.0 mm
48	1/8 inch X 0.025 inch	3.18mm X 0.71 mm
49	5/16 inch X 0.035 inch	7.94mm X 0.89 mm
50	1/4 inch X 0.028 inch	6.35mm X 0.71 mm
51	1/4 inch X 0.035 inch	6.35mm X 0.89 mm
52	1/4 inch X 0.049 inch	6.35mm X 1.24 mm
53	1/4 inch X 0.065 inch	6.35mm X 1.65 mm
54	3/8 inch X 0.035 inch	9.53mm X 0.89 mm
55	3/8 inch X 0.049 inch	9.53mm X 1.24 mm
56	3/8 inch X 0.065 inch	9.53mm X 1.65 mm
57	1/2 inch X 0.035 inch	12.70mm X 0.89 mm
58	1/2 inch X 0.049 inch	12.70mm X 1.24 mm
59	1/2 inch X 0.065 inch	12.70mm X 1.65 mm
60	1/2 inch X 0.083 inch	12.70mm X 2.11 mm

ASEA METAL: Global Specialist in High-Precision Instrumentation Tubing

ASEA METAL is a leading global manufacturer and supplier specializing in High-Precision Instrumentation Tubing, the critical component for Petrochemical, Offshore, Semiconductor, and Power Generation industries. We provide a comprehensive range of Seamless Stainless Steel and Nickel Alloy Tubes, manufactured to the highest international standards including ASTM, ASME, JIS, and EN.

Our expertise covers a wide spectrum of sizes from 6mm to 38mm (OD) and 1/8" to 1" (OD), ensuring exceptional dimensional tolerances and superior surface finishes for maximum corrosion resistance. Every batch is supplied with a full EN 10204 3.1 MTC (Mill Test Certificate), guaranteeing reliability for your high-pressure hydraulic and control systems. Trust ASEA METAL for your 316L, Duplex, and Super Alloy tubing solutions.

[Technical Data] Chemical Composition (%) - ASTM A213 / A269

Grade	C (Max)	Mn (Max)	P (Max)	S (Max)	Si (Max)	Ni	Cr	Mo
TP304/304L	0.035	2.00	0.045	0.030	0.75	8.0-11.0	18.0-20.0	-
TP316/316L	0.035	2.00	0.045	0.035	0.75	10.0-14.0	16.0-18.0	2.0-3.0
TP321	0.080	2.00	0.045	0.035	0.75	9.0-12.0	17.0-19.0	Ti 5x(C+N)
S31803	0.030	2.00	0.030	0.020	1.00	4.5-6.5	21.0-23.0	2.5-3.5
S32750	0.030	1.20	0.035	0.020	0.80	6.0-8.0	24.0-26.0	3.0-5.0
Alloy 825	0.05	1.0	0.03	0.03	0.5	38.0-46.0	19.5-23.5	2.5-3.5
Alloy 625	0.10	0.5	0.015	0.015	0.5	58.0 min	20.0-23.0	8.0-10.0
Monel 400	0.30	2.0	-	0.024	0.5	63.0 min	-	(Cu 28-34)

[Mechanical Properties] Tensile, Yield & Hardness

Material Grade	Tensile Strength (min)	Yield Strength (min)	Elongation (min)	Hardness (max)
TP316L / 304L	485 MPa (70 ksi)	170 MPa (25 ksi)	35%	HRB 80
Duplex S31803	620 MPa (90 ksi)	450 MPa (65 ksi)	25%	HRC 25
Super Duplex S32750	795 MPa (116 ksi)	550 MPa (80 ksi)	15%	HRC 32
Alloy C276	690 MPa (100 ksi)	283 MPa (41 ksi)	40%	HRB 100
Titanium Gr.2	345 MPa (50 ksi)	275 MPa (40 ksi)	20%	HRB 80
316Ti (Titanium)	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	HRB 90

[Dimensional Tolerances] Cold Drawn Seamless Tube

Outside Diameter (OD)	OD Tolerance	WT Tolerance	Length Tolerance
Under 1/2" (12.7mm)	+/- 0.13mm	+/- 15%	+ 3.18mm / -0mm
1/2" to 1-1/2" (38.1mm)	+/- 0.13mm	+/- 10%	+ 3.18mm / -0mm
Over 1-1/2" to 3.5" (88.9mm)	+/- 0.25mm	+/- 10%	+ 4.76mm / -0mm

[Usage & Applications] Industrial Scope

Industry Field	Key Application Keywords for Instrument Tube
Oil & Gas / Offshore	Chemical injection lines, Umbilical lines, Control systems, Wellhead control panels, Hydraulic control.
Power Generation	Steam tracing, Heat exchanger tubes, Analyzer lines, Boiler instrumentation, Condenser tubing.
Semiconductor / High Purity	Gas delivery systems, BA/EP grade precise tubing, Ultra-high purity (UHP) gas lines.
Marine & Shipbuilding	LNG carrier fuel piping, Sea water cooling systems, Hydraulic steering lines, Engine fuel injection.

Related Keywords & Industry Standards:
ASEA METAL provides high-quality Instrument Tube 316L, 304L, S31803, S32750 for global industrial systems. Standard sizes: 6mm, 8mm, 10mm, 12mm, 15mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 38mm OD. Inch sizes: 1/8, 1/4, 3/8, 1/2, 3/4, 1 inch. Compliant with ASTM A213, ASTM A269, ASTM A312, JIS G3459, EN 10216-5. Applications: Oil & Gas instrumentation, Offshore hydraulic lines, Power plant steam tracing, Semiconductor gas delivery, Shipbuilding fuel lines, Chemical plant sampling systems. Supplying worldwide from Korea with MTC EN10204 3.1 certification.

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Head Office : 35, Sinju-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, Republic of Korea
Factory : Noksansandan 335-ro, Gangseo-gu, Busan, Republic of Korea

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