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 Name | Carbon Steel Seamless Pipe |
| Material | A53(A.B)A106 (A. B).0345,16Mn, 10#, 20#,45# S235JR. S355JR, Q320,Q360,Q410,Q460,Q490 ASTMA252, Gr.2,Gr.3.ST37, ST42, ST52, GrB, X42 X46 X52 X5 X6 X65 X70. 30CrMo .etc |
| Wall Thickness | 2.5-75mm |
| Outer Diameter | 13.7-1219.2mm |
| Length | Length:Single random length/Double random length 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques |
| Standard | API 5L, ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS ANSI B36.1 6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711 |
| Section Shape | Square, Rectangular, Round, |
| Pipe Ends | Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc. |
| Surface Treatment | 1. Galvanized,bare 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement |
| 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 | |||||||
| Grade | Chemical Composition (%) Max. | ||||||||
| C | Mn | P | S | Cu | Ni | Cr | Mo | V | |
| A | 0.25 | 0.95 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| B | 0.30 | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| Grade | Mechanical Properties | |
| Tensile Strength (Mpa) | Yield Strength (Mpa) | |
| A | ≥48,000 (≥330) | ≥30,000 (≥205) |
| B | ≥60,000 (≥415) | ≥35,000 (≥240) |
| Standard | Product specification category |
Steel Grade |
Chemical Composite | ||||||||
| C | Mn | P | S | Si | V | Nb | Ti | CEpcm | |||
| API 5L | PSL 1 | L210 or A | ≤0.22 | ≤0.90 | ≤0.030 | ≤0.030 | ≤0.25 | ||||
| L245 or B | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| L290 or X42 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| L320 or X46 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| L360 or X52 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| L390 or X56 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| L415 or X60 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | ||||||
| PSL 2 | L245R or BR | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | C | C | ≤0.04 | ≤0.25 | |
| L290R or X42R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | ||
| L245N or BN | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | C | C | ≤0.04 | ≤0.25 | ||
| L290N or X42N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | ||
| L320N or X46N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 | ||
| L360N or X52N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | ||
| L390N or X56N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | ||
| L415N or X60N | ≤0.24 | ≤1,40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | Negotiate | ||
| Standard | Product specification category | Steel Grade | Yield Strength | Tensile Strength |
| API 5L | PSL 1 | L210 or A | 210 | 335 |
| L245 or B | 245 | 415 | ||
| L290 or x42 | 290 | 415 | ||
| L320 or X46 | 320 | 435 | ||
| L360 or X52 | 360 | 460 | ||
| L390 or X56 | 390 | 490 | ||
| L415 or X60 | 415 | 520 | ||
| PSL 2 | L245R or BR | 245~450 | 415~760 | |
| L290R or X42R | 290~495 | 415~760 | ||
| L245N or BN | 245~450 | 415~760 | ||
| L290N or X42N | 290~495 | 415~760 | ||
| L320N or X46N | 320~525 | 435~760 | ||
| L360N or X52N | 360~530 | 460~760 | ||
| L390N or X56N | 390~545 | 490~760 | ||
| L415N or X60N | 415~565 | 520~760 |
| Steel pipe nominal outer diameter range | Steel pipe outer diameter | Coating category | Coating | Coating thickness |
| DN100~600 | 114.3~609.6 | 3PE (three-layer polyethylene) | First layer: epoxy powder (green) | 2.0~4.5mm |
| Intermediate layer: adhesive (white) | ||||
| Outermost layer: polyethylene (black) | ||||
| 2PE (two layers of polyethylene) | First layer: adhesive | 2.0~4.5mm | ||
| Outermost layer: polyethylene | ||||
| DN80~600 | 88.9~609.6 | Epoxy powder | Epoxy powder | 200~400um |
| 2FBE (Double layer epoxy powder) | First layer: epoxy powder (green) | 400~800um | ||
| Outermost layer: reinforced epoxy powder (gray green) | ||||
| DN100~600 | 114.3~609.6 | 3PP (three layers of polypropylene) | First layer: epoxy powder (green) | 2.5~3mm |
| Intermediate layer: adhesive (white) | ||||
| Outermost layer: polypropylene (white) |