# Aktif Celik — Industrial Steel Supplier

> Aktif Celik is a B2B industrial steel supplier headquartered in Istanbul, Turkey. We supply forged flanges, pipe fittings, alloy steel bars, ferro alloys, foundry materials, and silica sand to energy, petrochemical, automotive, defense, shipbuilding, and heavy industry sectors across Turkey, Europe, and the Middle East.

## Company Information

- Name: Aktif Celik (Aktif Çelik)
- Website: https://aktifcelik.com
- Industry: Iron & Steel Manufacturing / B2B Industrial Supply
- Headquarters: Umraniye, Istanbul, Turkey
- Phone: +90 544 442 7090
- Email: info@aktifcelik.com
- Languages: Turkish, English, German, Italian, Arabic, Russian, French, Spanish

## Core Product Lines

### Pipe Connection Elements (ASME/ANSI/API Standards)
- Forged Steel Flanges: Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice (ANSI B16.5 / B16.47)
- Pipe Fittings: Elbows, Tees, Reducers, Caps (ASME B16.9)
- Branch Connections: Weldolet, Sockolet, Threadolet, Elbolet, Latrolet
- Ring Joint Gaskets: R, RX, BX types
- Anchor Flanges: Pipeline support and fixation

### Steel Bars
- Hot Rolled Bars (EN 10060): Round, hexagonal, square, flat — 12-340mm, 40+ grades
- Bright Bars (EN 10278): Cold drawn, peeled, ground — h7-h11 tolerance
- Forged Bars & Pipes: 200-1000mm, seamless tubes (EN 10297-1)
- Free-Cutting Steels: 11SMnPb30, 11SMn30 — CNC optimized
- Carbon Steels: C35, CK45, SAE 1008-1050
- Case Hardening Steels: 16MnCr5, C10, C15

### Foundry & Casting Materials
- Ferro Alloys: FeCr, FeMn, FeSi, FeSiMg, FeSiMn, FeP
- Pig Iron: Steel pig, hematite pig, ductile pig
- Iron Casting: Inoculants, spheroidizers
- Non-Ferrous Casting: Crucibles, tablet alloys

### Surface Treatment & Abrasives
- Forged Grinding Balls: B2, B3, 60Mn, 65Mn, high-chrome
- Silica Sand: Foundry sand, industrial sand (99%+ SiO2)

## Industries Served

Energy & Oil/Gas, Petrochemical, Machinery Manufacturing, Automotive, Hydraulic & Pneumatic Systems, Shipbuilding, Defense, Agricultural Machinery, Foundry, Cement & Mining, Surface Treatment, Steelmaking, Glass, Refractory, Chemical, Construction, Water Treatment, Sports Facilities, Welding & Cutting, Paint & Coating

## Standards & Certifications

ASME B16.5, ASME B16.9, ASME B16.47, ANSI, API 6A, API 6D, EN 1092-1, EN 10060, EN 10278, EN 10297-1, ISO 9001:2015, ISO 14001, ISO 45001, CE Marking, TSE

## Technical Resources

- [Steel Weight Calculator](https://aktifcelik.com/en/araclar/agirlik-hesaplama): weight per meter/piece by grade and profile
- [Flange Dimensions Table](https://aktifcelik.com/en/araclar/flans-olculeri): ASME B16.5 / B16.47 flange dimensions
- [Hardness Converter](https://aktifcelik.com/en/araclar/sertlik-donusturucu): HRC / HB / HV / tensile conversion
- [Grade Equivalents](https://aktifcelik.com/en/araclar/kalite-esdeger): EN / DIN / AISI / GOST / JIS cross-reference
- [Bolt Torque Calculator](https://aktifcelik.com/en/araclar/civata-tork): tightening torque by bolt class
- [Steel Density Table](https://aktifcelik.com/en/araclar/celik-yogunluk): density by alloy family
- [ISO Tolerance Calculator](https://aktifcelik.com/en/araclar/tolerans-hesaplayici): ISO 286 shaft/hole tolerances
- [Chemical Composition](https://aktifcelik.com/en/araclar/kimyasal-kompozisyon): element ranges by grade
- [Unit Weight Table](https://aktifcelik.com/en/araclar/birim-agirlik): unit weight reference
- [Pressure Class Rating](https://aktifcelik.com/en/araclar/basinc-sinifi): flange pressure-temperature classes
- [DN/NPS Conversion](https://aktifcelik.com/en/araclar/dn-nps-donusum): DN to NPS pipe size conversion
- [Charge Calculation](https://aktifcelik.com/en/araclar/sarz-hesaplama): furnace charge mix
- [AFS Grain Fineness](https://aktifcelik.com/en/araclar/afs-hesaplama): AFS grain fineness number
- [Shot Blasting Calculator](https://aktifcelik.com/en/araclar/shot-blasting): abrasive/media calculation

## Site Structure

- [Products](https://aktifcelik.com/en/urunler): 22 categories, 85+ sub-products
- [Industries](https://aktifcelik.com/en/sektorler): 20 sectors served
- [Production](https://aktifcelik.com/en/uretim-hatlarimiz): 15 production processes
- [Tools](https://aktifcelik.com/en/araclar): 14 engineering calculators
- [Steel Grades](https://aktifcelik.com/en/celik-kalitesi): grade datasheets (42CrMo4, C45, S355J2, 16MnCr5, and more)
- [Blog](https://aktifcelik.com/en/blog): technical articles, guides, analyses
- [Standards](https://aktifcelik.com/en/standartlar): standards reference
- [Contact](https://aktifcelik.com/en/iletisim): contact details
- [Request Quote](https://aktifcelik.com/en/teklif): request a quotation

## Extended Information

- [Full company & product reference](https://aktifcelik.com/llms-full.txt): comprehensive specifications, technical data, and detailed company information