Carbon Steel Tubes
As one of the largest carbon tubes supplier and manufacturer in India, we are capable of offering the best prices for Carbon tubes. All Carbon tubes are produced to meet the toughest quality requirements from our customers. Carbon steel tubes produced by Reliable Pipes & Tubes are capable of handling with high pressure and temperature. We at Reliable Pipes & Tubes Ltd, guarantee you lowest prices from our stock of over 300 tons in carbon steel tubes. Carbon tubes are mainly used for producing high temperature heat exchangers.
Prices for carbon tubes mainly depend on the size and radius of the tubes. Since the pricing of carbon tubes is dependent on the design of the tubes, we can quote the prices, on receipt of inquiries from our customers. If you are interested in purchasing high quality carbon tubes, please contact us now for prices and product details. We guarantee lowest prices for carbon steel tubes in India. One of the largest manufacturer and supplier of Carbon tubes in India. Carbon steel tubes supplied by us, are widely used for manufacturing furnaces, burners, kilns, annealing equipments, combustion chambers, thermo wells, gas turbines, and equipment for handling high temperatures.
Carbon tubes are stocked and delivered to our customers in annealed and pickled condition in size range of 6mm OD upto 300 OD in thickness upto 30mm. Carbon steel tubes are stocked in 5.5 to 6.5 MTR or custom lengths. Even traders find it beneficial to purchase carbon tubes from us. Carbon steel pipes are manufactured as per ASTM A53, A106, A179, A192, API 5L. All materials are also available in accordance to equivalent DIN/ EN standards and grades. We are manufacturers, stockholder and suppliers of seamless carbon steel tubes in various standards.
Types of Carbon Steel Tubes
|A 53||Welded and Seamless Steel Pipe|
|A 161||Seamless Low-Carbon and Carbon-Molybdenum Steel Still Tubes for Refinery Service|
|A 106||Seamless Carbon Steel Pipe for High-Temperature Service|
|A 178||Electric-Resistance-Welded Carbon Steel Boiler Tubes|
|A 179||Seamless Cold-Drawn Low-Carbon Steel Heat-Ex-Changer and Condenser Tubes|
|A 134||Electric-Fusion (Aro)-Welded Steel Plate Pipe (Sizes 16 in. and Over)|
|A 192||Seamless Carbon Steel Boiler Tubes for High-Pressure Service|
|A 135||Electric-Resistance-Welded Steel Pipe|
|A 199||Seamless Cold-Drawn Intermediate Alloy-Steel Heat-Exchanger and Condenser Tubes|
|A 139||Electric-Fusion (Arc)-Welded Steel Pipe (Sizes 4 in. and Over)|
|A 200||Seamless Intermediate Alloy-Steel Still Tubes for Refinery Service|
|A 209||Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes|
|A 210||Seamless Medium-Carbon Steel Boiler and Superheater Tubes|
|A 211||Spiral-Welded Steel or Iron Pipe|
|A 213||Seamless Ferritic Chrome-Moly Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes|
|A 214||Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes|
|A 226||Electric-Resistance-Welded Carbon Steel Boiler and Superheater Tubes for High-Pressure Service|
|A 250||Electric-Resistance-Welded Carbon Molybdenum Alloy-Steel Boiler and Superheater Tubes|
|A 252||Welded and Seamless Steel Pipe Piles|
|A 254||Copper Brazed Steel Tubing|
|A 333||Seamless and Welded Steel Pipe for Low-Temperature Service|
|A 334||Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service|
|A 335||Seamless Ferritic Alloy Steel Pipe for High-Temperature Service|
|A 370||Methods and Definitions for Mechanical Testing of Steel Products|
|A 381||Metal-Arc Welded Steel Pipe for High-Pressure Transmission Service|
|A 405||Seamless Ferritic Alloy-Steel Pipe Specially Heat Treated for High-Temperature Service|
|A 422||Butt Welds in Still Tubes for Refinery Service|
|A 423||Seamless and Electric Welded for Low Alloy Steel Tubes|
|A 450||General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes|
|A 498||Seamless and Welded Carbon, Ferritic, and Austenitic Alloy Steel Heat-Exchanger Tubes with Integral Fins|
|A 500||Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes|
|A 501||Hot-Formed Welded and Seamless Carbon Steel Structural Tubing|
|A 512||Cold-Drawn Buttweld Carbon Steel Mechanical Tubing (CDBW). Covers carbon steel mechanical tube manufactured from hot strip by the hot continuous weld process and subsequently cold drawn. Standard grades for CDBW are 1010, 1012 or 1020 depending upon various factors.|
|A 513||Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing (ERW-DOM). Covers carbon and alloy steel mechanical tube manufactured by cold forming and electric resistance welding of hot rolled or cold rolled strip. Type 1 covers As-Welded HREW, Type 2 covers As-Welded CREW Roth HREW and CREW usually are supplied in 1010 grade. Type 5 covers welded and drawn-over-mandrel (DOM) tube. DOM usually is supplied in 1020 or 1026 grade.|
|A 519||Seamless Steel Mechanical Tubing (CDS or HFS). Covers carbon and alloy steel mechanical tube manufactured by the seamless process (extruded or pierced) followed by hot finishing or cold finishing. Chemistry and dimensional tolerances are the controlling factors. Supplemental requirements are available on special order basis. Although many grades are listed, grades 1016, 1026, 4130 and 4140 are the most common for distributor stock.|
|A 106||Seamless Carbon Steel Mechanical Tubing (HFS). The applicable portions of this seamless carbon steel pipe specification establish chemistry and property limits for large OD heavy wall mechanical tube sizes not covered by ASTM-A-519 specification.|
|A 520||Supplementary Requirements for Seamless and ERW Carbon Steel Tubular Products for High-Temperature Service Conforming to ISO Recommendations for Boiler Construction|
|A 523||Plain End Seamless and Electric-Resistance-Welded Steel Pipe for High-Pressure Pipe-Type Cable Circuits|
|A 524||Seamless Carbon Steel Pipe forA tmospheric and Lower Temperatures|
|A 530||General Requirements for Specialized Carbon Steel and Alloy Pipe|
|A 539||Electric-Resistance-Welded Coiled Steel Tubing for Gas and Fuel Oil Lines|
|A 556||Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes|
|A 557||Electric-Resistance-Welded Carbon Steel Feedwater Heater Tubes|
|A 587||Electric-Resistance-Welded Carbon Steel Pipe for the Chemical Industry|
|A 589||Seamless and Welded Carbon Steel Water Well Pipe|
|A 618||Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing|
|A 655||Special Requirements for Pipe and Tubing for Nuclear and Other Special Applications|
|A 671||Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures|
|A 672||Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures|
|A 691||Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures|
|A 692||Seamless Medium Strength Carbon-Molybdenum Alloy-Steel Roller and Superheater Tubes|
|A 700||Rec. Practice for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment|
Stock Range of Carbon Steel Tubes
|Product||Carbon Steel Tubes|
|Steel Pipes & Tubes||
|Typical Size Range||½” nominal through 60” OD|
|Technology||Hot Rolled, Cold Drawn, Extruded, Cold Finished, Heat Treated|
|Coatings||Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE)|
|Markings||Heat Number, Size, Grade, Manufacturing Spec., Commodity Name or as per customer request|
|Testing & Inspections||Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Hardness Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, NDT TEST ( ET TEST, UT TEST), Third Party Inspection|
|Pipe Ends||Square Ends (straight cut, saw cut, and torch cut), or Beveled for welding|
|Packing||Plastic Plugs in Both Ends, Hexagonal Bundles of Max. 2,000kg with Several Steel Strips, Plastic End Caps|
Although pipes and tubes may look similar, they are in fact quite different in nomenclature and sizing. Remember that pipes and tubes are rarely interchangeable. The difference between pipe and tube include:
- Shape – Pipes are always round, whereas tubes can be square, rectangular or round.
- Tolerances – Pipe tolerances are set but not too restrictive. Tube tolerances are very strict – (Production process is generally lengthy and involves many quality checks around key dimensional parameters such as straightness, roundness, wall thickness, surface, etc.).
- Measurement – Pipes are generally measured by the inside diameter (ID), often called the “nominal” diameter, and a “schedule”, which refers to the wall thickness whereas for tubes, the outer diameter (OD) and wall thickness, which are exact measures in inches or millimeters roughly corresponds to the tube size. For tubes, the difference between the outside diameter and the wall thickness, multiplied by two, defines the inside diameter of the tube.
- Telescoping Abilities – Tube can be telescoped. Pipe, on the other hand, does not have a flash weld. DOM (Drawn over Mandrel) Tube is the best material for telescoping because the inside flash weld has been removed.
- Rigidity – Although copper and brass tubes can be shaped relatively easily, tubes are are typically rigid. Pipes, on the other hand, are invariably rigid and cannot be shaped without special equipment.
- Applications – Pipes are used in all process fluids and services. Tubes are generally used in tracing lines, tubes for heat exchanger, fired heater and in instrument connection. Tubes are also used as primary load bearing member in steel structure for the civil application.
- Metal Types – Tube is available in hot rolled steel and cold rolled steel. Pipe is typically black steel (hot rolled). Both items can be galvanized.
- Size – Pipes are typically larger than tubes.
- Strength – Tubes are stronger than pipes.
|Grade||Carbon Steel Tubes|
|Product Type||Seamless and Welded Tube|
|Size||6mm OD to 300 OD|
|Thickness||1mm to 20mm|
|Specification||ASTM A53, ASTM A179, ASTM A192|
|Technique||Hot Rolled, Cold Rolled|
|Price (INR/Kg)||520 to 800|
|Standard||Grade||Chemical Components (%)||Mechanical Properties|
|C||Si||Mn||P||S||Tensile Strength (Mpa)||Yield STrength(Mpa)|
|API 5L PSL1||A||0.22||–||0.9||0.03||0.03||≥331||≥207|
|API 5L PSL2||B||0.24||–||1.2||0.025||0.015||≥414||≥241|
Electric Resistance Welding (ERW) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired length; therefore ERW pipe have a welded joint in its cross-section, while seamless pipe does not have any joint in its cross-section through-out its length.
In Seamless pipe, there are no welding or joints and is manufactured from solid round billets. The seamless pipe is finished to dimensional and wall thickness specifications in sizes from 1/8 inch to 26 inch OD. Applicable in for High-pressure applications such as Hydrocarbon Industries & Refineries, Oil & Gas Exploration & Drilling, Oil & Gas Transportation and Air and Hydraulic cylinders, Bearings, Boilers, Automobiles, etc.
ERW (Electric Resistance Welded) pipes are welded longitudinally, manufactured from Strip / Coil and can be manufactured upto 24” OD. ERW pipe cold formed from a ribbon of steel pulled through a series of rollers and formed into a tube which is fused through a electric charge. It is mainly used for low/ medium pressure applications such as transportation of water / oil. Common sizes for ERW Steel Pipe range from 2 3/8 inch OD to 24 inch OD in a variety of lengths to over 100 feet. Surface finishes are available in bare and coated formats and processing can be handled on site to customer specifications.
How to identify whether the pipe is seamless or welded?
If it is ASTM A53,
Type S means seamless.
Type F is furnace but welded,
Type E is Electrical resist welded.
That is how. It is the easiest way to identify whether pipe is Seamless or ERW.
• Manganese – strength and hardness; decreases ductility and weldability; effects hardenability of steel.
• Phosphorus – increases strength and hardness and decreases ductility and notch impact toughness of steel.
• Sulfur decreases ductility and notch impact toughness Weldability decreases. Found in the form of sulfide inclusions.
• Silicon – one of the principal deoxidizers used in steel making. In low-carbon steels, silicon is generally detrimental to surface quality.
• Copper – detrimental to hot-working steels; beneficial to corrosion resistance (Cu>0.20%).
• Nickel – ferrite strengthener; increases the hardenability and impact strength of steels.
• Molybdenum – increases the hardenability; enhances the creep resistance of low-alloy steels.
Steel pipe sizes
Pipe size is quoted as a “Nominal Pipe Size” or NPS. The origin of the NPS numbers for smaller pipes (< NPS 12) is different to the origin for larger diameter pipes. However, all pipes of a specific NPS number have the same external or outer diameter (OD). The internal diameter will vary depending on the wall thickness of the metal. The reason for this is so that the same structural supports can be used for all piping of a specific NPS number regardless of the wall thickness.
Steel pipe schedules are a way to describe the wall thickness of the pipe. This is a critical parameter as it is directly related to the strength of the pipe and the suitability for specific applications. A pipe schedule is a dimensionless number and is calculated based on the design formula for wall thickness, given the design pressure and allowable stress.
Examples of schedule numbers are as follows: 5, 5S, 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, STD, XS, and XXS—with the most common being schedules 40 and 80. As the schedule number increases, the wall thickness of the pipe increases. The schedule number of a pipe therefore defines the internal diameter, as the OD is fixed by the NPS number.
As one of the biggest carbon steel tubes stockholder and supplier in India, Reliable Pipes & Tubes Ltd. carries inventory of over 10,000 tons in its warehouses in Mumbai, Maharashtra India. We sell our carbon steel pipe products throughout India, and to international clients. We can supply our carbon steel tube products not only in industry-standard lengths and diameters, but also in custom length and diameters.
How are Steel Pipes Certified?
Certification of Steel Pipes
Manufacturers issue a Material Test Report or Mill Test Report to validate that the product meets the chemical analysis and mechanical properties specification. The MTR will contain all relevant data to the product and will accompany the product through its lifecycle.
The following are typical parameters that may be recorded on an MTR:
- Chemical composition including carbon content, alloys, and sulfur
- Material size, weight, identification, and grade
- Material heat number, which ties back to the processing batch
- Mechanical properties like tensile strength, yield strength, and elongation