Construction
Fasteners, anchors, PPE, road safety and site consumables for buildings, roads and infrastructure.
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Authorised ranges
Sectors we serve
Talk to us →Structural steel
HR / HV / A325 / A490 / F3125 structural bolting, DTIs, shear studs and anchor bolts for steel frames.
Oil & petrochemical
B7 / B7M / L7 / B8M stud bolts, 2H heavy nuts, PTFE & Xylan coatings, duplex and A453 for plants.
Automotive
Machine screws, socket screws, nyloc and flange nuts, masking tapes and abrasives for workshops.
Ship building
Stainless and duplex fasteners, bulwark ladders, welding consumables and flap discs for yards.
Electrical & switchgear
Channel nuts, threaded rods, cable ties, insulation tape and fibreglass ladders for MEP.
About Elementary
Elementary Building Material Trading is a Doha-based supplier of fasteners, abrasives, access equipment, site materials and fabrication services. We stock GDPA fasteners, Speedusa abrasives and Penguin ladders and scaffolding, and we support contractors, fabricators and facility teams with technical advice, data sheets and in-house anchor bolt and metal fabrication.
Certifications
Need a quotation?
Send your bill of materials – we reply with price, stock and lead time. Call or WhatsApp +974 6615 3376.
Who we are
Specified properly, supplied on time
Elementary Building Material Trading (اليمينتاري لتجارة مواد البناء) is a trading company based in Birkat Al Awamer, Qatar. We focus on the parts of a project that are easy to overlook and costly to get wrong: the fasteners that hold structures together, the materials and consumables crews use every day, and the equipment that keeps them working safely.
We represent three brands. GDPA, an Indian manufacturer based in Jalandhar and certified to ISO 9001, IATF 16949, ISO 14001 and ISO 45001, covers fasteners from grade 4.6 to 12.9, HSFG bolts and DTI washers, supplied with EN 10204 3.1 certificates. Speedusa covers cutting, grinding and flap discs. Penguin covers heavy-duty aluminium ladders and mobile scaffold towers.
Beyond these brands we supply the complete fastener range, building materials for every stage of a project, and fabrication with laser and water jet cutting.
Mission
The correct part, on time
To supply fasteners, abrasives and access equipment that meet the specification on the drawing, delivered when the site needs them.
Vision
The technical supplier of choice
To be the trading partner contractors in Qatar call first when a joint, a cut or a working height has to be right.
How we work
From enquiry to delivery
- EnquirySend a list, a drawing or a bill of materials by WhatsApp, email or the website.
- Technical checkWe confirm grades, sizes, coatings and the matching parts against your specification.
- QuotationPrice, stock and lead time, with alternatives where an item is hard to source.
- DeliveryCounted, labelled and delivered to site with test certificates where required.
ASTM range
The complete ASTM fastener family
From general A307 bolts to F3125 structural bolts, A193 / A320 studs and F1554 anchor rods, with the matching nuts and washers.
Application guide
Which screw for which job
Every recommendation links to a draft data sheet. Ask us if your application is not listed.
Selector
Size the screw for your job
Tell us what you are fixing and how thick the steel is. The selector picks the drill point, diameter and stock length from our range: Ø 4.2–6.3 mm, 19–250 mm (3/4"–10"), drilling 3 to 15 mm of steel.
| Diameter | Gauge | Lengths | Drill points | Drills steel | Heads |
|---|---|---|---|---|---|
| Ø 4.2 mm | #8 | 19–50 mm | #2 · #3 | up to 3–5 mm | Hex · Pan · Wafer · CSK |
| Ø 4.8 mm | #10 | 19–100 mm | #2 · #3 | up to 5 mm | Hex · Pan · Wafer · CSK |
| Ø 5.5 mm | #12 | 19–250 mm | #3 · #4 · #5 | up to 12.5 mm | Hex · Pan · CSK |
| Ø 6.3 mm | #14 | 19–250 mm | #5 · #5 heavy-duty | up to 15 mm | Hex · CSK |
Drill capacities are typical values and vary slightly by screw maker. Total steel thickness must not exceed the point’s capacity, and the drill flute must clear the steel before the thread engages.
At work
The people behind every order
Product gallery
A look across the range
Tap any picture to open its data sheet.
Across every stage
Tools & equipment
Can’t see an item? We source most construction materials on request. Add a note in the enquiry form.
Made to your drawing
When the catalogue size doesn’t fit the job
Projects often need a length, thread length or shape that isn’t on the shelf. Our fabrication team makes every effort to manufacture anything to your requirement: fasteners in mild steel (MS) and stainless steel (SS 304 and SS 316), and cut and fabricated parts in aluminium and other metals, finished in black, GI, HDG or passivated condition.
Send us a drawing, a sketch or a bill of materials. We confirm material, grade, dimensions, finish and lead time before production starts.
What we fabricate
Custom fasteners in MS and SS
Stud bolts cut to length
Full-thread and tap-end studs in A193 B7, B8 and B8M and A320 L7, with heavy hex nuts, to ASME B16.5 flange sizes or your length.
Anchor & foundation bolts
L-type, J-type and straight anchor bolts with plates and nuts, in MS (ASTM F1554 Gr. 36 / 55, 4.6, 8.8) or SS, HDG on request.
U-bolts
Pipe and round-bar U-bolts bent to pipe size, with nuts and plates, in MS black, GI, HDG and SS 304 / 316.
Threaded rods & bars
DIN 975 threaded rods and fully threaded bars cut to any length, in grade 4.8, 8.8, B7 and stainless.
Special bolts to drawing
Non-standard lengths, thread lengths, reduced shanks and special heads, made from bar to your dimensions.
Eye bolts & hooks
Forged-look and bent eye bolts and hook bolts for hanging, lifting accessories and supports, in MS and SS.
Cutting & fabrication
Services for any metal
Send a DXF or DWG drawing, or a sketch with sizes. Sheets, pipes, tubes and bars in SS, MS and aluminium are supplied through our Building Materials division.
Laser cutting
Accurate CNC laser cutting of MS, SS and aluminium sheet and plate, from single parts to large batches.
Water jet cutting
Cold cutting with no heat-affected zone, for thick plate, stainless, aluminium and any metal.
Custom fabrication
Brackets, base plates, supports, frames and assemblies made to your drawing in any metal.
Welding & finishing
Welding, grinding and finishing, with galvanising, painting or passivation as required.
Materials
Mild steel, stainless steel or aluminium
Choose by strength, environment and budget. We supply mill test certificates for the bar used.
MS · Mild & carbon steel
- Grades
- 4.6, 5.6, 8.8 · ASTM A307 · F1554 Gr. 36 / 55 · A193 B7 (alloy)
- Finishes
- Black, GI (electro-zinc), HDG, PTFE
- Best for
- Structural steel, foundations, pipe supports, general construction
- Note
- Needs a coating for outdoor and coastal exposure; HDG is the usual choice
SS · Stainless steel
- Grades
- SS 304 (A2-70, B8) · SS 316 (A4-70, A4-80, B8M)
- Finishes
- Plain, pickled and passivated
- Best for
- Coastal, marine, water treatment, food and chemical plants
- Note
- 316 resists chlorides better than 304; use anti-seize to prevent galling
Aluminium
- Forms
- Sheets, plates, tubes, round bars and profiles
- Finishes
- Mill, anodised or powder-coated
- Best for
- Facades, frames, enclosures and lightweight structures
- Note
- Fix with stainless or bi-metal screws and isolate from carbon steel to avoid galvanic corrosion
How an order is made
From drawing to dispatch
- Drawing reviewWe check dimensions, grade, thread and finish against your drawing or standard.
- MaterialBar is selected in the specified MS or SS grade, with its mill test certificate.
- CuttingBar is cut to length with allowance for chamfers and thread run-out.
- ThreadingThreads are rolled or cut to metric, UNC or 8UN and checked with thread gauges.
- FormingAnchor, J, U and eye shapes are bent to the drawing radius and leg length.
- FinishingBlack, GI, HDG or PTFE for MS; pickling and passivation for SS.
- Inspection & markingDimensional and visual checks, with grade marking where the standard calls for it.
- Packing & dispatchCounted, labelled and packed with certificates for delivery to your site.
Have a fabrication drawing?
Send it with quantities and finish, and we will quote material, price and lead time.
Enquiry list
Coatings & finishes
Black, GI, HDG or PTFE
The finish changes corrosion life, thread fit, friction and weight. These are the thicknesses the calculator uses.
Black
- Finish
- Self-colour or black oxide, light oil
- Weight added
- None
- Nut factor
- K ≈ 0.20
- Use
- Indoor steelwork, painted assemblies, lubricated flange joints
GI · Electro-zinc
- Thickness
- 5–12 µm, 8 µm typical
- Standard
- ISO 4042 · ASTM F1941
- Weight added
- About 0.2–0.5 %
- Use
- Indoor and dry areas. 12.9 needs baking against hydrogen embrittlement.
HDG · Hot-dip galvanised
- Thickness
- ≥ 50 µm mean (ISO 10684), ≥ 53 µm (ASTM F2329); 60 µm used here
- Weight added
- About 2–4 % on bolts
- Use
- Outdoor, structural and coastal work. Nuts tapped oversize. Not used on 12.9.
PTFE · Xylan
- Thickness
- 20–30 µm over phosphate
- Weight added
- Under 0.2 %
- Nut factor
- K ≈ 0.08–0.12
- Use
- Offshore and petrochemical stud bolts, B7 and L7 with 2H nuts
Preliminary design aid for static loads. Partial factors are the recommended values of each code – check your National Annex / project specification. Fatigue, seismic, prying, eccentric loading and block tearing are not covered unless shown. Final design must be checked by a qualified engineer.
Preliminary design aid to ACI 318-19 Ch. 17 for static loads, no supplementary reinforcement (condition B), normal-weight concrete. Seismic, fatigue, eccentric or moment loading, base-plate design and anchor reinforcement are not covered. Pull-out values for through bolts and bond values for chemical anchors must come from the product approval (ETA / ICC-ES). Final design must be checked by a qualified engineer.
Ultimate load factors 1.4 (dead) and 1.6 (wind). Bracket checked in bending at the wall face; dowel checked in steel shear only – stone strength at the dowel hole must be confirmed by testing (e.g. ASTM C1354 / EN 13364). Preliminary sizing only; final design by the façade engineer.
Reference values compiled from the published dimension tables (mm unless stated). Highlighted cells differ from the first standard. Always confirm against the current edition of the standard for design and inspection – we do not sell or reproduce standard documents; official copies are available from ISO, ASTM, BSI, DIN (Beuth) and CEN members.
Series
T = K × F × d. Planning guide only – follow the joint designer’s procedure where one exists. Elementary Building Material Trading · www.elementarybm.com · +974 6615 3376
Standard practice: ISO 898-1 bolts to 75 % of proof load; stainless ISO 3506 to 70 % of 0.2 % proof stress; ASTM F3125 grades (A325, A325M, A490, A490M, F1852, F2280) to the RCSC minimum pretension (70 % of minimum tensile); A193/A320 studs to 50 % of minimum yield, in line with common ASME PCC-1 flange practice; EN 14399 HR/HV sets to Fp,C = 0.7 × fub × As (EN 1993-1-8) – for these, use the k-value on the set’s certificate. Values are a planning guide. Actual torque depends on lubricant, washer surface and tool accuracy; follow the joint designer’s or flange manufacturer’s procedure where one exists.
Grade reference
Mechanical properties and matching parts
Minimum values from the governing standard. Metric figures are for M16 and below, inch figures for 1" and below unless the grade has one value for all sizes.
Technical articles are currently available in English.
Technical articles are currently available in English.
Get in touch
Send us your list
Add items from the calculator or products page, or type your requirement below. Include grade, size, coating and quantity where you can.
Company
Elementary Building Material Trading
Address
Birkat Al Awamer, Zone 91
Street 3147, Building 51
Qatar
WhatsApp
+974 6615 3376
Phone
+974 6615 3376
Website
www.elementarybm.com
Hours
Saturday – Thursday
8:00 AM – 6:00 PM
Friday: Closed
C.R. No.
179024
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