low temp pipe

Low Temperature Carbon Steel Pipe

Worldwide Pipe & Supply stocks and supplies Seamless A/SA333 Grade 1/6 Pipe for your Low Temperature Service applications. We offer seamless and welded steel pipe. Let Worldwide Pipe help you get the low temperature carbon steel pipe (LTCS) you need to complete your project on time and on budget. Contact us if you need help with a specific carbon steel pipe request.

ASTM A333 Low Temperature Pipe – Grades 6 Pipe

Our low-temperature carbon steel pipes have been developed chiefly for use in low-temperature. They are low- to medium-carbon (0.20 to 0.30%), high-manganese (0.70 to 1.60%), silicon (0.15 to 0.60%) steels, which have a fine-grain structure with uniform carbide dispersion. Our LTCS pipe features moderate strength with toughness down to — 50°F (—46°C). ASTM A333 covers nominal wall seamless and welded carbon pipe. ASTM A333 Grade 6 Low Temp Seamless Carbon Steel Pipe is an alloy steel with similar properties as AISI 4032 steel.

Standard Specification for LTCS A/SA 333 Grade 1/6 Seamless Pipe

  • Specifications: ASTM A333 / ASME SA333
  • Standard: ASTM, ASME, and API
  • Size Range: 1/2″ – 24″
  • Schedules: STD, XH, 40, 80, 100, 120, 160, XXH
  • Form: Round, Square, Rectangular

We have included the low temperature carbon steel grade 6 mechanical and chemical requirements below:

LTCS Grade 6 Pipe Chemical Requirements:

Element Composition (%)
Carbon (max) 0.30
Manganese 0.29-1.06
Phosphorus (max) 0.025
Sulfur (max) 0.025

A333 Grade 6 Pipe Mechanical Requirements:

Psi MPa
Tensile Strength (min) 60,000 415
Yield Strength (min) 35,000 240

Types of LTCS Pipes

Worldwide Pipe & Supply is capable of supplying different kinds of low-temperature carbon steel pipe. Some of the common types we provide include:

  • Seamless
  • ERW
  • Fabricated
  • CDW

Seamless vs. Welded Carbon Steel Pipe

A seamless low temperature carbon steel pipe is a pipe that does not have a welding seam or a welding joint. A welded low temperature carbon steel pipe is a steel pipe that is formed by rolling steel plate and welding the seam. Worldwide Pipe provides both seamless and welded ASTM A33 pipe for your varying applications. Learn more about our welded carbon steel pipe products here.

Industries Served

Our low temperature carbon steel pipes are distributed to a wide range of different industries that require pipe for low temperature applications including:

  • Oil & Gas
  • Petrochemical
  • Alternative Energy
  • Subsea Drilling
  • Construction
  • Mechanical

Value Added Services

Worldwide Pipe & Supply also has the capabilities to tailor our ASTM low temperature carbon steel pipes to your unique specifications with our value-added services:

  • Threading – threading and coupling of carbon steel pipe
  • Fabricating – customize your low temp carbon steel pipe
  • Coating – galvanizing, zinc plating, fusion bonding, and more
  • Logistics – procuring, ordering, and delivering products

The Worldwide Pipe Advantage

Worldwide Pipe & Supply has more than 100 years of combined experience and has gained vast industry knowledge. Our company provides competitive prices, the ability to procure hard-to-find products and delivery worldwide. We want to assist you in completing your projects on time and on budget.

Ready To Learn More?

Contact us today to speak to a representative or give us a call at 888.903.3433

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Worldwide Pipe & Supply stocks & supplies seamless A/SA333 Grade 1/6 Pipe for your low temperature service applications up to minus 150 degrees. Learn more!

Seamless Pipe Low-Temperature
( ASTM A333 / ASME SA333 )

ASTM Scope:
This specification covers nominal (average) wall carbon and alloy steel pipe intended for use at low temperatures and in other applications requiring notch toughness. Several grades of ferritic steel are included as listed in Table 1. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on impact properties.

Product Knowledge:
This ASTM specification is written so that the end user and the manufacturer can agree upon, and clearly understand, the properties and capabilities of the piping product being supplied. In contrast with national codes (like API, ASME or CSA), ASTM A333 is rarely stipulated by national or state-level legal requirements.

There are several grades in A333, each with different steelmaking approach to improve the steel’s impact properties at lower temperatures. Several grades have nickel (Ni) additions, and are capable of high toughness at cryogenic temperatures as low as -320F (-195C). Many of these grades would be considered rare, and in the experience of Bri-Steel, they are expensive to procure and may be difficult to find a capable fabricator with an proven weld procedure. The exception to this is Gr6, which is quite common and is regularly stocked in colder regions of North America. A333 Gr6 has proven impact toughness at -50F (-45C), and is commonly used in applications where the piping is exposed directly to cold environments during construction and/or in operation.

A333 Gr6 is also commonly used for pressure piping of compressed gas, where a crack would be expected to have catastrophic consequences.

Beginning with the 2013 edition, the title of this spec included “other applications with required notch toughness”. This could include applications where cyclic loading and fatigue cracking are concerns, or where corrosion may be expected to contribute to notching of the metal. In these applications, the proven notch toughness of the material would be expected to deter crack initiation and growth.

Note that A333 Gr 6 allows seamless and long-seam pipe manufacturing techniques. That being said, for pipes with long seams, impact toughness of the base metal, weld metal and weld heat-affected zone must be proven and documented.

Rather than “re-invent the wheel”, ASME has recognized the widespread use of this product, and has adopted the A333 standard for use in pressure vessel (BPVC) and pressure piping (B31.X) applications. The details of this can be found in ASME Boiler and Pressure Vessel Code (BPVC) Section IIA, and is identified as SA333. Note that there may be minor exceptions in the SA version of ASTM standards, and the engineers, end users, purchasers and Manufacturer must comply. Note also that there is often a 5 to 10 year lag between the approved ASTM edition and the approved ASME edition. This means that there can be minor differences between the two specifications. Most engineers who spec SA333 product will also prefer to follow the requirements of the more recent ASTM version (which is usually also more strict), resulting in the common notation ASTM/ASME A/SA106 on the product documentation.

Note that there is a lower limit on manganese (Mn) in ASTM A333 Gr6 of around 0.30% Mn, though you will typically see around three times this much (around 0.90% Mn). For products that are hot rolled, it will be more common to see values of above 1.20% Mn, as the increased alloying is necessary to attain the impact toughness requirements of the standard. Because of these considerations, this product will commonly have a Mn/C ratio of 4 to 8 depending on the production method. Therefore, ASME B31.3 limits the low temp application of SA333 Grade 6 products to above -50F (-45C).

There is also a limitation on Niobium Nb (in the USA, this element is referred to as Columbium Cb). It seems that this limitation was an attempt to reduce the demand for worldwide Niobium, since the ore is generally mined in Africa and has become a conflict mineral. From the engineering perspective, Niobium is still preferred to other microalloying elements for its ability to increase the ductility of the steel during an impact (i.e, the % shear increases with Niobium content).

A106 does not have its own table of pipe dimensions. Rather, like A333 and API 5L, it reverts to ASME B36.10 for the nominal pipe dimensions. Therefore, A106 pipe products are often multi-certified to similar ASTM A53, A333 and API 5L grades, where the requirements of all these specifications are met.

Note that for welding SA333 products, ASME BPVC Section IX considers SA333 Gr6 to be in the P1G1 alloy grouping (along with SA53 GrB, SA106 GrB).

It is interesting that hydrotesting is not required for this standard, provided that non-destructive testing has been performed, such as ultrasonics or eddy current inspection, and was determined to be capable of full-thickness inspection (i.e., it must have been volumetric NDT). When the hydrotesting option is chosen instead of NDT, the test pressure will be at 60% of the burst pressure of the pipe.

Basic Product Properties:
A333 Grade 6:
35 ksi (240 MPa) min. YS
60 ksi (415 MPa) min. UTS
Impact Tested to meet
Minimum 18J (13 ft-lb) at
-45В°C (-50В°F)

Bri-Steel Manufacturer Seamless Pipe Low Temperature Pipe ASTM A333 ASME SA333 Grade 6 Required Notch Toughness