ASTM A333 Grade 1 Seamless Tube Manufacturer & Supplier in India

USA Piping Solution is a trusted and established Manufacturer, Supplier & Exporter of high quality ASTM A333 Grade 1 Low Temperature Carbon Steel Seamless Tubes and Carbon Steel pipes & tubes as per International specification & construction standards. ASTM A333 Grade 1 is frequently confused with ASTM A334 Grade 1 both are low-temperature carbon steel grades with identical strength, but they serve different purposes. A333 Grade 1 in tube form is OD-controlled and specified for heat exchanger and condenser bundle applications, while A334 Grade 1 is the standard for pressure piping under ASME B31.3. If your application is a tube bundle operating at or below −45°C, A333 Grade 1 tube is a valid specification choice. For pressure piping in the same service, see our A333 Grade 1 Pipe page.Our quality controllers conduct rigorous quality testing to ensure that the ASTM A333 Carbon Steel Grade 1 Tubes that we supply are at affordable and reasonable prices. ISM High Quality ASME SA333 Grade 1 Pipes are made with top-quality materials and most modern manufacturing methods, always meeting all the standards in the industry.

Specification of ASTM A333 Grade 1 Seamless Tube

Attribute	Details
Product Type	Seamless / SAW / ERW / Spiral weld / Fabricated / Welded
Grade	ASTM A333 Grade 1 (Low Temperature Service)
Outer Dimensions	19.05 mm - 457 mm
Wall Thickness	2.0 mm - 60 mm
Length (Single Random)	17′ ~ 24′ lengths
Length (Double Random)	36′ ~ 44′ lengths
Custom Lengths	As specified on the order
Additional Testing	NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, etc.

ASTM A333 Grade 1 Seamless Tube Chemical Composition

Element	Carbon (max.)	Manganese	Phosphorus (max.)	Sulfur (max.)	Silicon	Nickel	Chromium	Other Elements
Composition (%)	0.30	0.40-1.06	0.025	0.025	—	—	—	—

Mechanical Properties of ASTM A333 Grade 1 Seamless Tube

Property	Yield Strength (min)	Tensile Strength (min)	Elongation (%)
Data	205 MPa/ 30 ksi	380 MPa/ 55 ksi	35%

Comparison of ASTM A333 Grade 1 vs ASTM A334 Grade 1 Tube

Property	ASTM A333 Grade 1	ASTM A334 Grade 1	Key Difference
Standard	ASTM A333	ASTM A334	Different ASTM specifications.
Dimensional Basis	NPS (Nominal Pipe Size) or OD-controlled	OD-controlled (Tube dimensions)	A334 is strictly OD-based.
Primary Use	Pressure piping (ASME B31.3)	Heat Exchangers / Condensers	A334 is the standard for tube bundles.
Yield Strength	207 MPa (30 ksi)	207 MPa (30 ksi)	Identical strength.
Tensile Strength	380 MPa (55 ksi)	380 MPa (55 ksi)	Identical strength.
Impact Test Temp	-50°F (-45°C)	-50°F (-45°C)	Same minimum temperature.

Pressure rating table of ASTM A333 Grade 1 Seamless Tube

NPS (in)	OD (in)	Wall (in)	Sch	100°F	200°F	400°F	600°F	700°F
1/2	0.840	0.109	40	6,747	6,168	5,792	5,010	4,865
	0.840	0.147	80	9,483	8,669	8,140	7,041	6,837
	0.840	0.188	160	12,704	11,614	10,905	9,433	9,160
	0.840	0.294	XXS	22,653	20,708	19,444	16,819	16,333
3/4	1.050	0.113	40	5,487	5,016	4,710	4,074	3,957
	1.050	0.154	80	7,743	7,079	6,647	5,749	5,583
	1.050	0.308	160	17,861	16,328	15,331	13,261	12,878
1	1.315	0.133	40	5,128	4,688	4,402	3,808	3,698
	1.315	0.179	80	7,118	6,507	6,110	5,285	5,133
	1.315	0.358	160	16,219	14,827	13,922	12,042	11,694
1-1/4	1.660	0.140	40	4,214	3,853	3,618	3,129	3,039
	1.660	0.191	80	5,905	5,398	5,069	4,385	4,258
	1.660	0.382	160	13,143	12,015	11,282	9,759	9,477
1-1/2	1.900	0.145	40	3,788	3,462	3,251	2,812	2,731
	1.900	0.200	80	5,356	4,897	4,598	3,977	3,862
	1.900	0.400	160	11,797	10,785	10,127	8,759	8,506
2	2.375	0.154	40	3,187	2,913	2,736	2,366	2,298
	2.375	0.218	80	4,616	4,220	3,963	3,428	3,329
	2.375	0.436	160	10,027	9,167	8,607	7,445	7,230
3	3.500	0.216	40	3,025	2,766	2,597	2,246	2,181
	3.500	0.300	80	4,288	3,920	3,681	3,184	3,092
	3.500	0.600	160	9,648	8,822	8,284	7,165	6,958
4	4.500	0.237	40	2,562	2,342	2,199	1,902	1,847
	4.500	0.337	80	3,712	3,394	3,186	2,756	2,677
	4.500	0.674	160	7,930	7,249	6,807	5,888	5,718

ASTM A333 Grade 1 Tube / ASME SA333 Grade 1 Tube Size Chart

ASTM A/ASME SA333 Grade 1 NB Sizes (inch)	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/2"	—	—	✔	✔	✔
3/4"	—	—	✔	✔	✔
1"	—	—	✔	✔	✔
1.25"	✔	✔	✔	✔	✔
1.5"	✔	✔	✔	✔	✔
2"	✔	✔	✔	✔	✔
2.5"	✔	✔	✔	✔	✔
3"	✔	✔	✔	✔	✔
3.5"	✔	✔	✔	✔	✔
4"	✔	✔	✔	✔	✔
5"	✔	✔	✔	✔	✔
6"	✔	✔	✔	✔	✔
8"	✔	✔	✔	✔	✔
10"	✔	✔	✔	✔	✔
12"	✔	✔	✔	✔	✔
14"	✔	✔	✔	✔	✔
16"	✔	✔	✔	✔	✔
18"	✔	✔	✔	✔	✔
20"	✔	✔	✔	✔	✔
22"	—	✔	✔	✔	—
24"	—	✔	✔	✔	—

Note: Dimensions shown in NPS schedule format for reference. ASTM A333 Grade 1 tubes are also available in OD-controlled dimensions (19.05mm-457mm OD, 2.0-60mm WT) for heat exchanger and condenser bundle applications.

Application and Industrial Uses of ASTM A333 Grade 1 Seamless Tube

Low-Temperature Piping Systems
Oil & Gas Industry
Petrochemical Plants
Power Generation Plants
Thermal Power Stations
LNG & Cryogenic Processing Plants

Other Grades of ASTM Pipes & Tubes

Frequently Asked Questions

What is ASTM A333 Grade 1 Seamless Tube?

ASTM A333 Grade 1 Seamless Tube is a low-temperature carbon steel tube used for piping applications requiring strength and toughness in cold environments.

What are the applications of ASTM A333 Grade 1 Tubes?

These pipes are commonly used in oil and gas plants, power plants, refineries, heat exchangers, and low-temperature piping systems.

Is ASTM A333 Grade 1 suitable for low-temperature applications?

Yes, ASTM A333 Grade 1 is specially designed for low-temperature service applications.

What is the chemical composition of ASTM A333 Grade 1?

ASTM A333 Grade 1 mainly contains carbon, manganese, phosphorus, and sulfur for strength and durability.

What is the difference between ASTM A333 Grade 1 and Grade 6?

Grade 6 has higher strength and better low-temperature impact resistance compared to Grade 1.

ASTM A333 Grade 1 Seamless Tube Supplier India