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RSM, The largest steel manufacturing mill in Bangladesh

Rahim Steel Mills (RSM) Co. (Pvt.) Ltd. incorporates the recent & modern steel making, slab casting & rolling facilities in Bangladesh as well as at a global level. Our steel and steel products are well appreciated to the customer base we have because we use the cutting edge technologies to produce worldcalss steel and bars in our technologically advanced mills and laboratories. Technologies used to assure best quality steel products and their materialistic Composition along with the quality assurance charecteristics based on different steel products manufactured under the best steel manufacturing mill in BD is described in a detailed manner

The Flat Products Complex

The flat products complex of Rahim Steel Mills Co. (Pvt.) Ltd. comprises of Slab Casting Unit & Hot Rolling Plate Mill with all modern facilities & sophisticated computerized process control system.

Quality at Every Stage

Quality control at every stage, from raw materials selection, steel making, slab casting to final hot rolling and grading of rolled products are ensured by a team of experts. In addition to a large group of skilled workers & technicians, we have a number of Metallurgist, Chemists & Engineers of different discipline in our organization.

Quality Control Department is Equipped: Laboratory with all modern equipment & chemicals

Analysis of Organic & Inorganic elements & their compounds such as Steel, Ray Hard Coke, Ferro Alloys etc. We have country's first spectrometer of ARL Switzerland mark for instant analysis of 22 elements in steel. This analysis facilities help to ensure the quality of raw & subsidiary raw material along with finished products.

Spectrometer

Spectrometer for instant analysis of 22 elements in steel.

Microscope with photographic attachment's & ultra-sonogram

AMicroscope is used for the microscopic analysis of steel such as grain size, inclusions etc. While the ultra-sonogram is used for non-destructive testing of steel plates.

100 M.T. & 60 M.T. universal testing machine & impact testing machine.

Elaborate physical testing of finished products for yield stress, ultimate tensile strength, plastic properties & resistance to impact to complement the chemistry efforts.

Chemical Composition & Physical Properties

Specification Grade C% (Max.) Mn% (Max.) P% (Max.) S% (Max.) Si% (Max.) Al% (Max.) Nppm (Max.) YS (Min.) N/mm² UTS (Min.) N/mm² Elong% on 200mm GL
Lloyds A .21 2.5 x C% .035 .035 .50 .02 120 235 400 - 520 22* Ideal for structural works such as ships, oil tanker/storage & other constructions where dynamic load & weld ability are prime factors.
JIS G 3116 SG225
SG295
SG325
SG365
.20 .30
1.0
1.50
1.50
.040 .040 -
.35
.55
.55
255
295
325
365
400
440
490
540
28
26
22
20
Suitable for LPG Cylinders.
ASTM A-36 .25 .802
1.20
.040 .050 .152
.40
250 400
550
20 Suitable for ordinary structural fabrication works where dynamic load is not required.
ASTMA 572 gr 42
gr 50
gr 60
gr 65
.21
.23
.23
.23
1.35
1.35
1.35
1.65
.040 .050 290
344
413
447
413
447
516
551
20
18
16
15
Suitable for structural fabrication works where dynamic load is involved.
IRS M-41 .10 .10
.25 - .45
.0752
.1402
.030 .28 - .72 Cu-.302.60 340 480 22 Suitable for the construction of Railway wagon.
DIN 17100 qst 37.2
qst 44.2
qst 52.3
.17
.21
.20
1.5 .05
.04
.04
.05 -
-
.55
90
90
235
275
355
340 - 470
410 - 540
490 - 640
26
22
22
Suitable for ordinary structural works where dynamic load is not involved.

* For flat tensile test specimens with a thickness corresponding to that of the product thickness & width of 25mm & a gauge length of 200mm the elongation is to comly with the following minimum values.

Thickness mm ≤5 >5 & ≤10 >10 & ≤15 >15 & ≤20 >20 & ≤25 >25 & ≤30 >30 & ≤40 >30 & ≤40
Elong % 14 16 17 18 19 20 21 22

Weight Table of Plates

Thickness Weight of 8ft. x 4ft. plate (Approx.) No. of plate 8ft. x 4ft./MT Rft/MT
5mm 115kg 8.69 69.5
6mm 137kg 7.3 58.4
7mm 160kg 6.25 50.0
8mm 183kg 5.46 43.7
10mm 229kg 4.36 34.9
12mm 274kg 3.65 29.2
16mm 366kg 2.73 21.8
20mm 458kg 2.18 17.4
22mm 503kg 1.99 15.9
25mm 572kg 1.75 13.9
32mm 732kg 1.366 10.9

N.B: Variation in total 1 + is applicable as per international standard.

Grade & Application

Application of our quality steel plates: Products Range

Grade RSM Code Application
RSM ship building quality grade (conforming to Lloyds grade) RSB Ship building
RSM commercial quality grade RCQ Common application (engineering fabrication, heavy machinery, steel structure bridge, steel furniture, automobile)
RSM railway slipper making quality grade RRS Railway slipper
RSM railway wagon building grade RTN Railway wagon
RSM LPG cylinders making quality grade RLPG LPG cylinders

ISO 9002 Certified

Germanischer Lloyd Approved