Seamless pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow - liquids and gases (fluids), slurries, powders and masses of small solids.
1. Steel tubing is a hollow steel shape intended for structural purposes and made from carbon, stainless, or galvanized steel further divided as:
· Mechanical Tubing is used in low stress applications such as fences, kitchens, restaurants, hospitals, solar panels and made with wall thicknesses up to 10 gauge.
· Structural Tubing is for high stress structural application like bridges, buildings, roll cages, and underwater platforms with wall thickness from 3/16" and up. It is often referred to as Hollow Structural Sections or just the acronym HSS.
2. Pipe is a hollow structure that is intended to carry material such as liquids, gasses, or even solids. Its wall thickness is described by its Schedule and it is often broken down by type using the method of manufacturing it, either ERW or Seamless.
Seamless pipe (and tubing) is made by extruding a steel block or by drilling a solid steel bar. Next, the extrusion or the drilled steel bar is cold drawn through a dye to achieve the diameter and thickness needed. Because this process can cause mechanical hardening, sometimes the material is annealed and straightened as a final process. Seamless Pipe & Tubing is subdivided as:
Cold Drawn Seamless, or CDS, exhibits precise tolerances and a good surface finish.
Hot Finished Seamless, or HFS, has less critical tolerances and somewhat scaly finish and is not as strong as CDS.
Product Specification
| Standard | API, ASTM, BS, DIN, GB, JIS |
| Outer Diameter | 21.3mm-660mm |
| Wall Thickness | 0.5mm-20mm |
| Dia Tolerance | Control with in the standard, OD:±1%, WT:±10% |
| Materials | 10#, 20#, 45#, Q235, Q345, Q195, ASTM A53/ A106/ A178/ A333/ A335, SAE1018, SAE1020, SAE1045, ST37, ST37-2, ST35, ST45, ST52, ST35.8, 19Mn5, 16Mn, SS400, Q345B, 27SiMn, 20Cr, 40Cr, 12CrMo, 15CrMo, 30CrMo, 35CrMo, 42CrMo |
| Zinc coating | Pre galvanized steel pipe: 60-150g/m² Hot dipped galvanized steel pipe: 200-400g/m² |
| Type of pipe coating | Epoxy powder |
| Inspection | ISO, BV, SGS, MTC |
| Packing | Steel strip packed. Standard Export Seaworthy Package. Suit forall kinds of transport, or as required |
| Application | Accessorize, machinery parts, structure steel pipe, piling pipe, sewage and clear water transportation, Line pipe for petroleum and so on |
| MOQ | 5metric ton,sample order accepted |
| Shipment time | Within 7-10 workdays after receiving deposit or L/C |
| Market | Southeast Asia, Middle East, Africa, Europe, South American and so on |
Application
Carbon steel pipe and tube are used in high-pressure conditions. They are highly resistant to shock and vibration, making it ideal to transport fluids. Carbon steel pipes are widely used in a number of industries, such as construction material, buidlings, bridges, transporting water and sewage, oil and gas industries, boiler and condenser tubes, high-pressure applications, and chemical processing.
- Construction material / bridges
- Transporting water and sewage
- Oil and gas industries
- Boiler and condenser tubes
- High-pressure applications
- Chemical processing
ASTM A106 Seamless Carbon Steel Pipe
ASTM A106/ASME SA106 is the standard specification for seamless carbon steel pipe applied for high temperature services. It includes three grades A, B and C, and common use grade is A106 Grade B. It used in different industries not only for pipeline systems like oil and gas, water, mineral slurry transmission, but also for boiler, construction, structural purposes.
ASTM A106 Grade B pipe is equivalent to ASTM A53 Grade B and API 5L B on chemical position and mechanical properties, in general use carbon steel and yiled strength minimum 240 MPa, tensile strength 415 Mpa.
Description
1. Standards: ASTM A106 (ASME SA106)
2. Products mainly used: apply to bending, curling and similar forming process.
3. The main products of steel / steel grade: Gr.A, Gr.B, Gr.C.
4. Specifications: diameter: 10.3 to 114.3 mm thickness: 0.8 to 12 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe.
5. Chemical composition and mechanical properties
6. JIS Number and Corrensponding Foreign Standards
Chemical Composition And Mechanical Properties
| Grade | Chemical Compositions | |||||||||
| C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V | |
| A106-A | ≤0.25 | 0.27-0.93 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
| A106-B | ≤0.30 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
| A106-C | ≤0.35 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
| Grade | Mechanical Properties | |||||||||
| Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | ||||||||
| A106-A | ≥330 | ≥205 | 30 | |||||||
| A106-B | ≥415 | ≥240 | 30 | |||||||
| A106-C | ≥485 | ≥275 | 30 | |||||||
| Standard | Grade | Chemical Composition (max)% | Mechanical Properties (min) | |||||
| C (Max.) | Mn (Max.) | Si (Max.) | S (Max.) | P (Max.) | Yield Strength(Mpa) | Tensile Strength(Mpa) | ||
| GB/T700-2006 | Q235A | 0.22 | 1.40 | 0.35 | 0.050 | 0.045 | 235 | 370 |
| Q235B | 0.20 | 1.40 | 0.35 | 0.045 | 0.045 | 235 | 370 | |
| Q235C | 0.17 | 1.40 | 0.35 | 0.040 | 0.040 | 235 | 370 | |
| Q235D | 0.17 | 1.40 | 0.35 | 0.035 | 0.035 | 235 | 370 | |
| GB/T1591-2009 | Q345A | 0.20 | 1.70 | 0.50 | 0.035 | 0.035 | 345 | 470 |
| Q345B | 0.20 | 1.70 | 0.50 | 0.030 | 0.030 | 345 | 470 | |
| Q345C | 0.20 | 1.70 | 0.50 | 0.030 | 0.030 | 345 | 470 | |
| BS EN10025 | S235JR | 0.17 | 1.40 | - | 0.035 | 0.035 | 235 | 360 |
| S275JR | 0.21 | 1.50 | - | 0.035 | 0.035 | 275 | 410 | |
| S355JR | 0.24 | 1.60 | - | 0.035 | 0.035 | 355 | 470 | |
| DIN 17100 | ST37-2 | 0.20 | - | - | 0.050 | 0.050 | 225 | 340 |
| ST44-2 | 0.21 | - | - | 0.050 | 0.050 | 265 | 410 | |
| ST52-3 | 0.20 | 1.60 | 0.55 | 0.040 | 0.040 | 345 | 490 | |
| JIS G3101 | SS400 | - | - | - | 0.050 | 0.050 | 235 | 400 |
| SS490 | - | - | - | 0.050 | 0.050 | 275 | 490 | |
| API 5L PSL1 | A | 0.22 | 0.90 | - | 0.030 | 0.030 | 210 | 335 |
| B | 0.26 | 1.20 | - | 0.030 | 0.030 | 245 | 415 | |
| X42 | 0.26 | 1.30 | - | 0.030 | 0.030 | 290 | 415 | |
| X46 | 0.26 | 1.40 | - | 0.030 | 0.030 | 320 | 435 | |
| X52 | 0.26 | 1.40 | - | 0.030 | 0.030 | 360 | 460 | |
| X56 | 0.26 | 1.10 | - | 0.030 | 0.030 | 390 | 490 | |
| X60 | 0.26 | 1.40 | - | 0.030 | 0.030 | 415 | 520 | |
| X65 | 0.26 | 1.45 | - | 0.030 | 0.030 | 450 | 535 | |
| X70 | 0.26 | 1.65 | - | 0.030 | 0.030 | 585 | 570 | |
| API 5L PSL2 | B | 0.22 | 1.20 | - | 0.025 | 0.015 | 245-450 | 415-760 |
| X42 | 0.22 | 1.30 | - | 0.025 | 0.015 | 290-495 | 415-760 | |
| X46 | 0.22 | 1.40 | - | 0.025 | 0.015 | 320-525 | 435-760 | |
| X52 | 0.22 | 1.40 | - | 0.025 | 0.015 | 360-530 | 460-760 | |
| X56 | 0.22 | 1.40 | - | 0.025 | 0.015 | 390-545 | 490-760 | |
| X60 | 0.22 | 1.40 | - | 0.025 | 0.015 | 415-565 | 520-760 | |
| X65 | 0.22 | 1.45 | - | 0.025 | 0.015 | 450-600 | 535-760 | |
| X70 | 0.22 | 1.65 | - | 0.025 | 0.015 | 483-621 | 565-758 | |
