Guaranteed on time delivery
As globally acclaimed we Gayatri Tubes are engaged in manufacturing and providing the very good quality of Carbon Steel ST 37 / ST 52 Pipes. These are designed at our well-equipped manufacturing unit using superior quality of raw substances. To meet the exact demands of the clients, these pipes are made easily available to them at different sizes, types, standards, dimensions, lengths, etc. With regard to product quality standards, these pipes are offered in specially made thicknesses and sizes according to the exact demands of the clients.
Our offered ranges of Carbon Steel ST 37 / ST 52 Pipes are appreciated because of its properties. It is like corrosion resistant, dimensional accuracy, ensures good stress distributions, rustproof finishes, it sustains high temperature and high-pressure loads, anti-corrosiveness and so on.
These pipes are used in various applications like oil & gas, refineries, oil mills, paper & pulp, construction, heat exchangers & fertilizers and pharmaceuticals. Also, it is used in other applications namely marine & offshore, water treatment, mining, dairy & food processing, defense & railway, power plant, nuclear power plant, etc.
Carbon Steel ST 37 / ST 52 Pipes are said to be carbon steel in carbon is found in 2.1% and the percentage mentioned for various alloys like molybdenum, nickel, copper, niobium, titanium, vanadium is not specified. ST37 is a low carbon steel that is contended with carbon of 0.20%. As ASTM A36, it isn’t sturdier. It is internationally applied by those applications wherein the superior strength isn’t much indispensable.
ST 52 steel is high strength and a low alloy structural steel. It can be welded readily to various other weld-able steel. The mechanical properties of ST 52 are yielding strength (355MPa+) and tensile strength (490-630Mpa). Various testing is done on Carbon Steel ST 37 / ST 52 Pipes for checking its strength and product quality. The test done is Spectro analysis, mechanical testing, pitting resistance test, flaring test, toughness test, PMI test, etc. The copies of documents provided are third party test report, packaging list, heat treatment chart, QAP, etc. The packaging of pipes is done considering standard packaging norms that are in bundles, into wooden boxes and wrapped using polypropylene sheets.
| Specifications | DIN 2391 ST 35 , ST 37.4 , ST 45 & ST 52 |
| Size | 15mm NB to 150mm NB (1/2” to 6”), 7″ (193.7mm OD to 20″ 508mm OD) |
| Dimension & Tolerance | Thickness 5-300mm, Width 1500-3500mm, Length 3000-12000mm |
| Surface Finish | Black |
| Features | High Strength, Corrosion Resistant, High Toughness and Deformability |
| Length | As per customer’s requirement (Maximum upto 7 meters) |
| Features | High Strength, Corrosion Resistant, High Toughness and Deformability |
| Grade | WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70 |
| Standard | Grade | C | Si | Mn | P max | S max | Phosphorous | S |
| DIN2391 | St37 | ≤0.17 | ≤0.35 | ≥0.35 | 0.04 | 0.04 | - | - |
| DIN2609 | St52 | max 0.22 | max 0.55 | max 1.60 | - | - | 0.04 | 0.035 |
| The final delivery condition | Cold drawn(Mandatory) BK1） |
Cold drawn(Soft) BKW1） |
Cold Drawn and Stress Release (BKS) |
Anneal (GBK)1） |
Normalizing (NBK)1） |
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| Kinds of Steel | Tensile | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation | ||
| Steel grade | Material number | No less than | ||||||||||||
| Rm | A5 | Rm | A5 | Rm | ReH | A5 | Rm | A5 | Rm | ReH2) | A5 | |||
| N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | |||
| St37.4 | 1.0255 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 350~480 | 235 | 25 | |
| St52 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490~630 | 355 | 22 | |
