A333 Gr.8
A333 Gr.8 - industrial steel pipe
ASTM A333 Grade 1 seamless pipe is specially manufactured for cold service and cryogenic working conditions with reliable impact resistance at low temperature.
ASTM A333 grade 1 is a carbon-based alloy that can be used at low temperatures. You can find manganese, phosphorus and sulphur all in the chemical composition of A333 carbon steel pipe. In A333 gr b pipe, the strength of each grade is different.
ASTM A333 grade 1 is constructed from carbon-based alloy for low temperature service. The chemical composition of the A333 carbon steel pipe includes – manganese, phosphorus and sulphur. The tensile strength and yield strength for the A333 gr b pipe is variable among its grades. For example, the tensile strength is 380 MPa and yield strength is 205 MPa for grade 1. The tensile strength is 450 MPa and yield strength is 240 MPa for grade 3. While the tensile strength is 415 MPa and yield strength is 240 MPa for ASTM A333 grade 1 pipe schedule. The pipes made from SA333 gr 1 material are meant for low temperature applications. The A333 grade 1 pipe is available in either welded, ERW, CDW, fabricated or seamless type. While producing welded pipes, it is not necessary to add filler metals during the operation. These carbon steel A333 grade 1 pipes are surface treated. The pipe ends of the A333 Gr 1 seamless pipe could be bevelled, plain ended or threaded, depending on the requirement of the buyer.
Some of the surface treatments include a coating or finishing by Oil-dip, Phosphating, Varnish, Passivation or Shot Blasting. They could also be anodized or finished polish. The treatment gives the surface of the A333 gr 1 smls pipe a smooth and flawless appearance. ASTM A333 grade 1 pipe can be conventionally formed, cold-worked and welded. The A333 grade 1 pipe can be hot worked, but they can’t be hot worked below 1500 degrees F. The ASTM A333 grade 1 pipe equivalent pipe is used in the transportation of Chemical, Water and Gas. SA333 gr1 pipe finds application in building or construction work, where they are used to deliver concrete pumps. We are one of the oldest A333 grade 1 pipe manufacturer.
Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements. ASTM A333 Grade 1 is the part of standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 Grade 1 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. Seamless and Welded Steel Pipe size for Low-Temperature Service:
| Compositions | Data |
|---|---|
| Carbon(max.) | 0.30 |
| Manganese | 0.40–1.06 |
| Phosphorus(max.) | 0.025 |
| Sulfur(max.) | 0.025 |
| Silicon | … |
| Nickel | … |
| Chromium | … |
| Other Elements | … |
| Properties | Data |
|---|---|
| Yield strength(min) | 205Mpa |
| Tensile strength(min) | 380Mpa |
| Elongation(%) | 35 |
| ℉ | ℃ |
|---|---|
| -50 | -45 |
ASTM A333 is the standard specification for seamless and welded carbon and alloy steel pipe for low temperature service or other applications requiring notch toughness.
Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties. The pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure. Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements.
ASTM A333 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure. Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
ASTM A333 steel pipe production includes a series of visual surface imperfections to guarantee that they have been properly manufactured. ASTM A333 steel pipe shall be subject to rejection if surface imperfections acceptable are not scattered, but appear over a large area in excess of what is considered a workmanlike finish. The finished pipe shall be reasonably straight.
Surface imperfections that penetrate more than 12½ % of the nominal wall thickness or encroach on the minimum wall thickness shall be considered defects. ASTM A333 steel pipe with such defects shall be given one of the following dispositions:
ASTM A333 Grade 6 pipe is a low-temperature carbon steel pipe that is typically used in applications where the pipe will be exposed to temperatures below -45°C. Because of its superior notch toughness, it performs well in cryogenic conditions and has demonstrated durability at temperatures as low as -452°F. This makes it the perfect candidate for applications where the pipe will be subject to cold temperatures throughout construction and/or operation.
A333 Seamless Pipe (ASME S/A-333) comes in nominal pipe sizes 1/4″ to 24″ O.D.
Pipe dimensions range from 1/2″ to 24″ O.D. for A333 welded pipes (ASME S/A-333).
Carbon and alloy steel pipe with a nominal (average) wall thickness intended for low temperature operation is covered by ASTM A333. There are several ferritic steel grades included in this standard. A106 GR. B Carbon Steel Seamless Pipes Some product sizes may not be available under this specification because heavier wall thicknesses harm low-temperature impact properties.
The difference between ASTM A333 and ASTM A106 is that ASTM A333 is a low-temperature carbon steel pipe that can be used as a structural pipe, while ASTM A106 is a non-structural carbon pipe that is used in high-temperature applications.
The ASTM A106 Gr.B carbon steel Pipe is valued for its high tensile strength and toughness, high oxidation resistance, and prolonged durability. Additionally, the Seamless Pressure ASTM A106 Pipe has wide applications in industries such as the gas and oil industry, water, heating, pipeline construction, and many others.
However, the ASTM A106 Gr.B carbon steel Pipe should be used only at temperatures less than 430°C, as exceeding this temperature can result in a reduction in its mechanical properties. The pipe is therefore not suitable for very high-temperature services.
With years of expertise, we provide a wide range of steel tube processing services. From basic sawing and machining to complex bending and upsetting operations, we support you at every stage of your project.
Our capabilities include eccentricity reduction and concentricity improvement through turning and grinding. We specialize in creating complex geometries using rotary swaging and axial forming, and offer property modifications through partial heat treatment to meet your exact requirements.
A range to meet your needs
High-quality steel solutions for diverse mechanical engineering applications – reliable, precise, and built for performance.
Premium steel products for demanding construction projects – from bridges to offshore structures, built to last.
Versatile components for the automotive industry – precision, quality, and processing expertise for every application.
Robust tubes for plant engineering and energy systems – designed for extreme conditions and long-term efficiency.
Versatile solutions for modern infrastructure – supporting reliable supply networks and large-scale construction projects.
Versatile solutions for hydraulic systems – durable, pressure-resistant, and engineered for maximum reliability.
| Condition | Typical Application |
|---|---|
| High Temperature | Boilers, superheaters, steam headers |
| Low Temperature | Cryogenic processing systems |
| High Pressure | Power & process piping |
| Corrosive Media | Chemical & petrochemical plants |
| Creep Service | Thermal power stations |
| Product | Specification |
|---|---|
| Seamless Pipes | ASTM A335 P1 / P5 / P9 / P11 / P22 / P91 |
| Butt Weld Fittings | ASTM A234 WP1 / WP5 / WP9 / WP11 / WP22 / WP91 |
| Forged Fittings & Flanges | ASTM A182 F1 / F5 / F9 / F11 / F22 / F91 |
Sunny Steel supplies alloy steel piping systems worldwide, supporting projects that demand certified materials, full traceability and long-term operational reliability.
Chemical composition inspection, mechanical properties test(tensile strength,yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension test, non-destructive test, hydrostatic test.
Identification of the chemical composition of the metal used to manufacture the fitting. Uses PMI sensors, including X-ray fluorescence or optical emission spectrometry.
Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW), after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).
| Term | Symbol | Explanation |
|---|---|---|
| Cold-finished/hard (cold-finished as-drawn) | BK | No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. |
| Cold-finished/soft (lightly cold-worked) | BKW | After the last heat treatment there is a light finishing pass (cold drawing). With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits. |
| Annealed | GBK | After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum. |
| Normalized | NBK | The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum. |
The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
Cold rolled steel coil substrate products deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, PVC laminating steel plates, etc., so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.
Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for seaworthy delivery or as requested.
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work: prevent rusting and sea transportation security.
Our packing can meet any needs of the customers.
| Grade | Tensile Strength (MPa） | Yield Point (MPa) | Elongation (%) | |
|---|---|---|---|---|
| Y | X | |||
| ASTM A333 Grade 1 | ≥380 | ≥205 | ≥35 | ≥25 |
| ASTM A333 Grade 3 | ≥450 | ≥240 | ≥30 | ≥20 |
| ASTM A333 Grade 4 | ≥415 | ≥240 | ≥30 | ≥16.5 |
| ASTM A333 Grade 6 | ≥415 | ≥240 | ≥30 | ≥16.5 |
| ASTM A333 Grade 7 | ≥450 | ≥240 | ≥30 | ≥22 |
| ASTM A333 Gr. 8 | ≥690 | ≥515 | ≥22 | |
| ASTM A333 Grade 9 | ≥435 | ≥315 | ≥28 | |
| ASTM A333 Grade 10 | ≥550 | ≥450 | ≥22 | |
| ASTM A333 Grade 11 | ≥450 | ≥240 | ≥18 | |
*The elongation values are furnished on the basis of standard round 2 inch or 50 mm(or 4D) specimens.
*Elongation of Grade 11 is for all walls and small sizes tested in full section.
| Grade | Chemical Composition (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Al | |
| Grade 1 | ≤0.30 | 0.40-1.06 | ≤0.025 | ≤0.025 | |||||||
| Grade 3 | ≤0.19 | 0.18-0.37 | 0.31-0.64 | ≤0.025 | ≤0.025 | 3.18-3.82 | |||||
| Grade 4 | ≤0.12 | 0.18-0.37 | 0.50-1.05 | ≤0.025 | ≤0.025 | 0.44-1.01 | 0.47-0.98 | 0.40-0.75 | 0.04-0.30 | ||
| Grade 6 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.025 | ≤0.025 | ||||||
| Grade 7 | ≤0.19 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 2.03-2.57 | |||||
| Grade 8 | ≤0.13 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 8.40-9.60 | |||||
| Grade 9 | ≤0.20 | 0.40-1.06 | ≤0.025 | ≤0.025 | 1.60-2.24 | 0.75-1.25 | |||||
| Grade 10 | ≤0.20 | 0.10-0.35 | 1.15-1.50 | ≤0.03 | ≤0.015 | ≤0.15 | ≤0.25 | ≤0.015 | ≤0.50 | ≤0.12 | ≤0.06 |
| Grade 11 | ≤0.10 | ≤0.35 | ≤0.6 | ≤0.025 | ≤0.025 | ≤0.50 | 35.0-37.0 | ≤0.50 | |||
*For Grade 1 and 6, each reduction of 0.01% C below 0.30%, an increase of 0.05 % Mn above 1.06 % would be permitted to a max. of 1.35%.
*For Grade 6, the limit for columbium may be increased up to 0.05 % on heat analysis and 0.06 % on product analysis.
*Generally, the carbon equivalent C.E = [C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15] shall not exceed 0.43% by heat analysis.
| No. | Order No. | Size description | ||
|---|---|---|---|---|
| O.D. /mm | W.T. /mm | Legnth /m | ||
| 1 | A333 Gr.6 A333 Gr.6/X42NS | 10-127 | 1-20 | 6-12.0 |
| 42-114.3 | 3.5-6 | 6-12.2 | ||
| 42-114.3 | 6-12 | 6-12.2 | ||
| 114.3-180 | 3.8-8 | 6-12.2 | ||
| 114.3-180 | 8-22 | 6-12.2 | ||
| 68-180 | 10-14 | 6-12.2 | ||
| 69-254 | 14-55 | 6-12.2 | ||
| 140-340 | 6-8 | 6-12.2 | ||
| 140-368 | 8-42 | 6-12.2 | ||
| 318-720 | 14-50 | 4-12.5 | ||
| 2 | A333 Gr.6/X52QS | 42-114.3 | 3.5-12 | 6-12.2 |
| 114.3-180 | 3.8-22 | 6-12.2 | ||
| 68-254 | 10-40 | 6-12.2 | ||
| 140-368 | 6-40 | 6-12.2 | ||
| 318-720 | 14-40 | 4-12.5 | ||
| 140-368 | 6-25 | 6-12.2 | ||
| 318-720 | 14-25 | 4-12.5 | ||
| 3 | 16MnDG | 10-127 | 1-20 | 6-12.0 |
| 42-114.3 | 3.5-12 | 6-12.2 | ||
| 114.3-180 | 3.8-22 | 6-12.2 | ||
| 68-254 | 10-55 | 6-12.2 | ||
| 140-368 | 6-42 | 6-12.2 | ||
| 318-720 | 14-120 | 4-12.5 | ||
| Crade | The lowest temperature for strike test | |
|---|---|---|
| ℉ | ℃ | |
| ASTM A333 Grade 1 | -50 | -45 |
| ASTM A333 Grade 3 | -150 | -100 |
| ASTM A333 Grade 4 | -150 | -100 |
| ASTM A333 Grade 6 | -50 | -45 |
| ASTM A333 Grade 7 | -100 | -75 |
| ASTM A333 Grade 8 | -320 | -195 |
| ASTM A333 Grade 9 | -100 | -75 |
| ASTM A333 Grade 10 | -75 | -60 |
Commonly used alloying elements and their effects are listed in the table given below.
| Alloying Elements | Effect on the Properties |
|---|---|
| Chromium | Increases Resistance to corrosion and oxidation. Increases hardenability and wear resistance. Increases high temperature strength. |
| Nickel | Increases hardenability. Improves toughness. Increases impact strength at low temperatures. |
| Molybdenum | Increases hardenability, high temperature hardness, and wear resistance. Enhances the effects of other alloying elements. Eliminate temper brittleness in steels. Increases high temperature strength. |
| Manganese | Increases hardenability. Combines with sulfur to reduce its adverse effects. |
| Vanadium | Increases hardenability, high temperature hardness, and wear resistance. Improves fatigue resistance. |
| Titanium | Strongest carbide former. Added to stainless steel to prevent precipitation of chromium carbide. |
| Silicon | Removes oxygen in steel making. Improves toughness. Increases hardness ability |
| Boron | Increases hardenability. Produces fine grain size. |
| Aluminum | Forms nitride in nitriding steels. Produces fine grain size in casting. Removes oxygen in steel melting. |
| Cobalt | Increases heat and wear resistance. |
| Tungsten | Increases hardness at elevated temperatures. Refines grain size. |
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
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