// 01 · WELDED FABRICATION

Welded Fabrication and Steel Structures.

ArmaWeld's founding purpose. We work with certified welders in MIG/MAG, TIG and shielded-metal arc processes, qualified WPS and the EN ISO 3834-2 quality framework. From crane bodies to pressure vessels, from excavator buckets to process tanks — every geometry and material is bound to a matching procedure.

EN ISO 9606-1 (steel) and 9606-2 (aluminium) certified welder team
WPS library based on EN ISO 15614-1 (steel) and 15614-2 (aluminium) WPQR
Qualified WPS and traceable welds on high-strength steels such as S690QL · Strenx 700/960/1100 · S700MC · S960QL
Preheat and inter-pass temperature control; every weld is recorded
Acceptance criterion EN ISO 5817 Class B (high quality)

Every weld on record with approved WPS.

Contract Welded Fabrication & Project-Based Production

● Welded Fabrication

■ WELDED FABRICATION ISO 3834-2

WELDED FABRICATION

Methods

MIG/MAG · TIG · E-ARC

WPS / WPQR

EN ISO 15614-1 · 15614-2

Welder Qualification

EN ISO 9606-1 · 9606-2 · 100%

Max. Section

Per project requirements

Symbolisation

EN ISO 2553

Acceptance Class

EN ISO 5817 B/C

CARBON STEELSTAINLESSALUMINIUMPED CAT.IIEN 1090 EXC3

QUALIFIED PROCESS · EN ISO 3834-2 ● ACTIVE

Plate Groups We Can Weld

Class	Description	fy min	Weld Note
Group 1S235 · S275	Structural carbon steel	235–275 MPa	Standard WPS
Group 1.2S355 J2+N	Medium-strength structural	355 MPa	EN 1090 EXC3
Group 3 · QTS690 QL · Strenx 700	Quench & temper	690 MPa	Preheat · EN 1011-2
Group 3 · QTS960 QL · Strenx 960	Ultra-high strength	960 MPa	Special WPS + H5 consumable
Group 3 · TMCPS700 MC · Strenx 700MC	Thermo-mechanical rolling	700 MPa	Heat input ≤ 1.5 kJ/mm
Group 3 · QTStrenx 900	High strength · SSAB	900 MPa	Preheating · EN 1011-2
Group 3 · QTStrenx 1100	Extreme strength · SSAB	1100 MPa	Special WPS + H5 · limited heat input

Class	Description	fy min	Weld Note
Group 8304 · 316 L	Austenitic stainless steel	—	Separate workshop · zero contamination
Wear-resistantHARDOX 400/450/500	Abrasion resistant (wear plate)	1000+ MPa	Bucket · armour · conveyor
Wear-resistantRAEX 400/450	Abrasion resistant	1200+ MPa	Heavy-wear applications
P-GrubuP265GH · P355NH	Pressure vessel steel	265–355 MPa	PED Cat. I–II · EN 13445
Hafif Metal · 9606-2EN AW 5754/6082	Aluminium alloy (TIG)	—	EN ISO 9606-2 certified welder

■ CRITICAL DIFFERENCES IN WELDING HIGH-STRENGTH STEEL

S700MC / Strenx 700MC — TMCP

Heat input ≤ 1.5 kJ/mm · Inter-pass temp ≤ 200 °C · Low carbon equivalent, preheat usually not required.

S690QL / Strenx 700–900 — QT

Preheat mandatory (EN 1011-2 Method B) · H5 consumable · no welding without WPQR.

S960QL / Strenx 960–1100 — QT

Material-specific WPS · Inter-pass temperature logging · No PWHT · H5 consumables mandatory.

// NEW · SUBMERGED ARC WELDING

35 m Submerged
Arc Welding Line.

Our new 35-metre submerged arc welding machine welds long linear seams, machinery and crane booms, and trailer and machine chassis in one set-up, at constant parameters and to a qualified WPS.

Long linear seams: girders, box sections, plates and tank shells
Boom welding: construction machinery, crane and platform booms
Chassis welding: trailers, agricultural and construction machinery
EN ISO 3834-2 quality framework, parameter records and NDT

One set-up for long parts, repeatable seams and fewer stop-start defects.

Submerged Arc Welding Service Boom and chassis welding guide →

■ SUBMERGED ARC WELDING · SAW ISO 3834-2 · EN 1090

35 m

SUBMERGED ARC WELDING · ISO 4063-121

Process

Submerged arc · SAW 121

Line length

35 m · single set-up

Position

PA flat · PB horizontal fillet

Applications

Linear seams · booms · chassis

Records

Current · voltage · speed per seam

Inspection

VT · PT · MT · UT

LinearBoomChassisWelded girderBox sectionTank shell

35 M LINE ● NEW · ACTIVE

CONTRACT · MIG/MAG & TIG WELDING · PROJECT-BASED PRODUCTION

Contract Welded Fabrication.
Project-Based Industrial Solutions.

From your drawing to delivery: contract welded fabrication and project-based production. MIG/MAG and TIG welding, EN 1090 and ISO 3834-2 certified, with engineering-optimised cost and certified quality.

// 01

Certified Production Set-up

With EN ISO 3834-2 welding quality management and EN 1090 EXC3 certification, every part is produced with traceable records.

// 02

MIG/MAG & TIG Welding

MIG/MAG and TIG fabrication with approved WPS in carbon steel, stainless steel, aluminium and high-strength steels.

// 03

Project-Based Flexibility

We plan production from single prototypes to medium-volume series. There is no minimum order.

// 04

Optimised Cost & Transparent Quotes

Engineering discipline raises operational efficiency; unnecessary costs are removed and you receive a transparent, competitive quote.

// 05

Fully Integrated Process

Welding, NDT and painting in-house; sheet cutting and bending are coordinated within the project plan. One point of contact and traceable delivery.

// 06

Engineer Supervision

Every contract project gets a quality plan under an IWE/IWT certified engineer, and welding parameters are recorded.

Production Process: From Drawing to Delivery

Technical Review & Quote

We review the drawing or sample, define material group, welding process (MIG/MAG or TIG), tolerances and documentation, then prepare the quote.

WPS Selection & Production Plan

An approved welding procedure (WPS/WPQR) is selected and a production plan with welding sequence and inspection points is drawn up.

Welding & NDT

Qualified welders carry out MIG/MAG or TIG welding, and the required NDT (UT, MT, PT, VT) is applied.

Muayene & Teslimat

After dimensional checks, visual inspection and quality records are complete, parts ship with the manufacturing documentation.

Which Welding Process Suits Your Project?

Kriter	MIG/MAG Welding	TIG Welding
Application	Structural steel, series contract work	Stainless, aluminium, precision parts
Verim	High — suited to series production	Medium — precise, slower
Weld Quality	Good — structural	Very good — visible and fine seams
Malzeme Uyumu	Carbon steel, high strength	Stainless, aluminium, alloys
Otomasyon	High (robot-compatible)	Medium
WPS Belgesi	✓ Mevcut	✓ Mevcut

Frequently Asked Questions

What is contract welded fabrication?

It is contract production in which the welding company builds parts to the customer's drawings or samples using its own equipment and qualified welders. ArmaWeld provides it with approved WPS under EN 1090 and ISO 3834-2.

Is there a minimum order quantity for project-based fabrication?

ArmaWeld handles both single prototypes and series production. There is no minimum order quantity (MOQ); the production plan follows the project's requirements.

What is the difference between MIG/MAG and TIG welding?

MIG/MAG (ISO 4063: 135/136) is ideal for productive series work and is preferred for structural steel. TIG (ISO 4063: 141) gives superior quality on stainless steel, aluminium and thin-wall precision parts. ArmaWeld uses both with approved WPS and qualified welders.

Which documents do you provide for contract welding?

EN ISO 3834-2 welding quality certificate, EN 1090 EXC3 execution class certificate, approved WPS/WPQR, welder qualification certificates and, on request, NDT reports (UT, MT, PT).

Which industries do you serve?

We provide contract welded fabrication and project-based solutions to manufacturers in machinery, construction and steel structures, agricultural machinery, defence, energy, hydraulics and special industrial equipment.

// 02 · SHEET CUTTING

Sheet Cutting and Tolerance Management.

An integrated cutting line from your DXF to the finished part. CNC plasma, laser and guillotine processes are executed to project specification. Parts are delivered at weld-ready tolerance; weld prep defined in the specification is completed in the same flow.

Method	Thickness	Material	Tolerance
CNC Plazma (HD)	1 – 40 mm	C. steel · Stainless · Al.	±0.5 mm
CNC Lazer (Fiber)	0.8 – 25 mm	C. steel · Stainless	±0.1 mm
Guillotine Shear	1 – 16 mm	C. steel · Stainless	±1.0 mm
Oxy-fuel Cutting	20 – 60 mm (200 mm, project-based)	Carbon steel	±1.5 mm
Profile Saw	Ø 20 – 400 mm	All profile types	±0.5 mm

Weld-ready edges and tolerance control.

● Precision Cutting

■ PLATE CUTTING DXF → G-CODE

PRECISION CUTTING

CNC Plasma

CNC plasma · project-based

Oxy

20–60 mm (standard) · 200 mm (project-based)

Laser

Max. 20 mm · ±0.1 mm

Guillotine

Max. 16 mm · 3000 mm

Nesting

Plate yield ≥ 85%

File Format

DXF · DWG · STEP

CNCNESTINGSINGLE PIECESERIESKIT

4 MACHINES ● ACTIVE

// 03 · BENDING

Bending and Forming.

Sheet and profile parts are brought to target geometry through V/U bending, cylindrical and profile shaping. Every bend is planned with angle simulation, neutral-axis calculation and springback compensation. For multi-bend parts, bend allowance analysis is prepared by the engineering team.

Method	Application	Planning	Output
V-bending	Sheet profiles, box sections	Angle simulation	±0.5° angle
U-bending	Derin profiller	Geri yaylanma kompanzasyonu	Montaj uyumu
Roll Bending (3-roller)	Cylindrical / conical forms	Bend allowance calculation	Ø tolerance
Profile Bending	T boru, L profil	Multi-geometry analysis	Form verification

Assembly fit through bend simulation.

● CNC Bending

■ BENDING & FORMING α ± 0.5°

FORMING & BENDING

Bending Method

V · U · profile bend

Bend Angle

0° – 180° · ±0.5°

Inner Radius

1.5 × t (practical)

Max. Sheet Thickness

Per project requirement

Rolling Machine

Cylindrical form · project-based

K-Factor

Calculated by material

V-BENDU-BENDROLLINGMULTI GEOMETRY

FORM · BEND · ROLL ● ACTIVE

// 04 · MECHANICAL ASSEMBLY

Mechanical Assembly and Sub-systems.

Large structures are produced as sub-assemblies, then fixtured and joined in the workshop using gauge and fixture systems. For modular shipment projects, field assembly is completed by an experienced mobile crew.

Controlled assembly with fixture and gauge systems
Structural alignment check with laser tracker / total station
Repeatable production with fixtures and gauges
Field assembly crew: bolted and welded joints
Shaft-centred structures, laser alignment service

● Mechanical Assembly

■ MECHANICAL ASSEMBLY BILL OF OPERATIONS

MECHANICAL ASSEMBLY

Fixture

Project-based

Bolted Joint

ISO 898 Class 8.8 · 10.9

Torque Certified

Digital wrench · trace log

Precision Alignment

Laser + optical

Test

Dry/Wet · Functional

Packaging

Sea/land · steel crate

OEMPROJECTCOMPLETE UNITBOM MANAGEMENT

FULL BOM ● ACTIVE

// 05 · NDT

NDT / Non-Destructive Testing.

Weld quality is not assessed by surface appearance alone. At ArmaWeld every critical weld is inspected beyond visual testing (VT): penetrant (PT) or magnetic particle (MT) for surface cracks, ultrasonic (UT) or radiographic (RT) inspection for internal defects.

VT — Visual Testing (EN ISO 17637)
PT — Liquid Penetrant (EN ISO 3452)
MT — Magnetic Particle (EN ISO 17638)
UT — Ultrasonic Testing (EN ISO 17640)
RT — Radiographic Testing (partner) (EN ISO 17636)
Level 2 certified personnel (EN ISO 9712)

Go to NDT page →

● NDT · Quality Control

■ QUALITY & NDT EN ISO 9712

QUALITY & INSPECTION

Visual (VT)

EN ISO 17637 · 100%

Penetrant (PT)

EN ISO 3452

Magnetic (MT)

EN ISO 17638

Ultrasonic (UT)

EN ISO 17640 · A-scan

Radiographic (RT)

Outsourced · licensed

Geometric

3D scanning

LEVEL IIIN-HOUSETRACEABLEDOCUMENTED

4 METHODS IN-HOUSE ● ACTIVE

06 / Materials Engineering

Material Compatibility Matrix

Base Material	Weldable To	Filler	Preheat	Note
S355J2+N	S235, S275, S355	G3Si1 / G42 4 M21 3Si1	CEV >0.45 or t≥30 mm	Standard WPS scope; EN 1090 EXC2/3
S690QL / S690Q	S690QL, S700MC (careful)	G89 / G89 4 M21 6NiCrMo	≥75°C (per WPS)	Separate WPQR required; heat input ≤1.5 kJ/mm
316L (1.4404)	304, 316L, 316Ti	ER316L / G19 12 3 L	Not required	Separate bay; interpass ≤150°C
HARDOX 450/500	HARDOX 400–500 (same series)	Special low-hydrogen filler	Minimize (≤75°C)	Low heat input; max 2-pass rule
Al 6082-T6	6082, 5754, 5083	ER5356 / ER4043	Not required	TIG 141; interpass ≤100°C; separate WPQR
Duplex 2205	2205, 316L (controlled)	ER2209 / G 22 9 3 N L	Not required	Ferrite 35–65%; N shielding; separate bay
P11 / P22 (Cr-Mo)	Same group / similar Cr-Mo	CMn / CrMo filler (per WPS)	150–250°C (WPS)	PWHT mandatory; EN 15614-1 + ASME reference

Matrix is indicative. Final filler, preheat and PWHT values are defined by approved WPS/WPQR. Welding engineering assessment required for dissimilar combinations.

Material Selection Guide by Sector

Bucket & Wear (Earthmoving)

HARDOX 450/500 — high wear, low heat input WPS
Strenx 700/960 — weight reduction + high strength
S355J2+N — main body, cost optimization
NDT: VT 100% · MT 20% critical joints

Pressure Vessel & Process

P265GH / P355NH — carbon steel vessels (PED Cat. II–III)
316L / 304L — corrosive environment, food/chemical
Duplex 2205 — high pressure + corrosion
NDT: VT+PT+UT+RT 100% (per project ITP)

Structural Steel (EN 1090)

S355J2+N — EXC2/EXC3 standard application
S690QL — weight optimization, bridge/crane
S275JR — secondary members, cost
NDT: VT 100% · UT 5–10% · EN 5817 B/C

Energy & Outdoor

S275JR / S355J2+N + HDG — solar structures
316L — coastal, C5 corrosion
Galvanizing EN 1461 — min 85 µm (C5 environment)
NDT: VT 100% · DFT measurement · galvanize thickness

Supplier & Material Certification

Supplier	Material Group	Certificate	Traceability
SSAB	Strenx, HARDOX, Toolox	EN 10204 3.1	Heat no. → WPS → NDT chain
ThyssenKrupp	High strength, stainless	EN 10204 3.1	Lot/heat no. labelling
Erdemir / İsdemir	S235–S355 structural steel	EN 10204 3.1	MTC digital archive
Outokumpu / Acerinox	304/316 stainless, duplex	EN 10204 3.1	PMI verification (critical)

All plate and profile materials are received with EN 10204 3.1 certificate. Heat number, WPS number and welder certificate are matched in the digital work order record.

Material	Standard	Welding Process	Special Requirement	WPS Status
Duplex 2205 (1.4462)	EN 10088	TIG 141 / MAG 135	Ferrite 35–65%, N shielding, low heat input	Approved WPQR
Duplex 2507 (1.4410)	EN 10088	TIG 141	Super duplex; interpass ≤100°C	Project-based
P11 (1.25Cr-0.5Mo)	EN 10216-2 / ASME SA-335	TIG root + MAG fill	Preheat 150–200°C · PWHT 690°C	Approved WPQR
P22 (2.25Cr-1Mo)	EN 10216-2 / ASME SA-335	TIG root + MAG fill	Preheat 200–250°C · PWHT 690–720°C	Approved WPQR
P91 (9Cr-1Mo-V)	ASME SA-335	TIG 141 (controlled)	Strict heat control · PWHT 760°C · HAZ softening risk	Project-based

Paslanmaz →S960QL →HARDOX →Engineering →

07 / Teknik Yetkinlik

Production and delivery details

Boyutsal

Dimensional Tolerance Reference Table

Process	Standard	Tolerance Class	Typical Value	Note
Fiber laser cutting	ISO 9013	Range 2–3	±0.1–0.3 mm	0.5–20 mm steel; weld-ready edge
CNC plasma cutting	ISO 9013	Range 3–4	±0.5–1.0 mm	3–60 mm steel; thick plate
Press brake bending	EN ISO 2768-m	—	±0.3° / ±0.5 mm	K-factor compensation applied
Welded assembly	EN ISO 13920	Class B	L ±6 mm / 6 m	Class B/C for EXC3 projects
Hole position	ISO 2768-m/H	—	±0.5 mm	CNC drilling + jig assembly
Plate rolling	—	—	Ø ±2 mm / 3 m	t ≤16 mm, Ø ≥500 mm

Montaj

Assembly & Alignment Equipment

Assembly Alignment

Assembly alignment with reference points and templates; geometry verification before jointing.

Torque Wrench (ISO 6789)

Calibrated hydraulic/pneumatic torque wrenches. Torque values recorded per assembly procedure.

Functional Testing

Hydraulic pressure test, pneumatic leak test, mechanical movement check. Test pressure per project ITP.

Surface

Surface Treatment & Protection

Treatment	Standard	Parameter	Control
Blasting	ISO 8501-1	Sa 2½ · profile 40–75 µm	Testex tape · visual
Paint (C3)	ISO 12944	Primer + intermediate + top · DFT 120–160 µm	DFT measurement · intercoat time
Paint (C5-M)	ISO 12944	Zinc-rich primer · DFT 280–320 µm	Adhesion test · salt spray (project)
Galvanizing	EN ISO 1461	Min 85 µm (C5 environment)	Magnetic gauge · visual
Pickling (SS)	ASTM A380	Acid bath + passivation	PMI · ferrite (duplex)

Termal

Post-Weld Heat Treatment (PWHT)

Service	Capacity	Control	Application
Furnace PWHT	Max 850°C · 3×2×2 m	Chart recorder · ±5°C	Cr-Mo, thick carbon steel, stress relief
Mobile PWHT	Ceramic pad + control unit	6-channel thermocouple	Pipeline, field assembly, large parts
Stress relief	600–690°C (material dependent)	Cooling rate ≤150°C/h	P11/P22, thick S355 (project-based)

PWHT procedure is defined by WPS/PQR. Time-temperature charts are included in the project dossier.

PWHT rehberi →

Welded Fabrication &
Integrated Project Management.

Welded Fabrication and Steel Structures.

35 m Submerged
Arc Welding Line.