K&L Industries

Industrial Valve & Steel Flow Control Platform

Focus on Development.

K&L Industries delivers engineered valve and flow control solutions for the global steel and heavy industry sector — built on certified manufacturing capacity, international partnerships, and cross-border execution control. With integrated production capabilities in Shanghai and Europe, we combine manufacturing scale with European compliance precision — enabling rapid adaptation to project-specific technical requirements without compromising quality or delivery timelines.

Industrial Capability. Not Distribution.

Our product portfolio covers a comprehensive range of industrial valves and steel-flow components designed for high-load, high-temperature, and high-pressure environments. Every solution is engineered to meet international standards and subjected to structured inspection protocols to ensure operational integrity in demanding industrial applications.

Why K&L

• Factory-backed production control • European & Asian manufacturing footprint • Certified compliance with international standards
• Flexible adaptation to custom specifications • Execution reliability across borders

We do not simply offer products.
We secure performance continuity for industrial operations.

Engineered strength. Controlled supply. Global execution.

Engineered for Critical Environments

Every component delivered under the K&L brand is:

• Certified to international standards (API / ASME / DIN / ISO)
• Designed for high-pressure, high-temperature, and corrosive applications
• Manufactured under strict quality supervision
• Fully traceable and inspection-verified

Failure is not an option in the industries we serve.
Neither is compromise.

We Deliver the Right Choice.

Our selection process is engineered — not commercial.

We evaluate:

• Application load profiles
• Environmental exposure
• Compliance requirements
• Lifecycle expectations
• Risk factors across jurisdictions

Only after this technical alignment do we supply.

K&L Industries

At K&L Industries, we do not compete on volume.
We compete on control.

We supply mission-critical valves, pipes, and fittings engineered for the world’s most demanding industries — Marine, Heavy Industry, Mining, Power Generation, Semiconductors, Petrochemical, and FM-approved environments.

Our OEM brand K&L Industries represents certified compliance, performance integrity, and execution reliability.

  • Wouter Witzel (100% Made in Netherlands)
  • IA InterApp - (100% Made in Switzerland)
  • K&L - Ball Valve Series 
  • K&L - EMT - Tripex series (double and triple offset butterfly valves)

  • K&L - Water applications valves series (Gate, BFV, Check Valves,)

  • K&L - Knife gate valves 
  • FCC - Electric Actuator 
  • BAR - Hydraulic Actuator
  • K&L - High pressure valves 
  • K&L - Pneumatic Actuator 

  • Control Valves (Import and Local brands)

  • QSI - Jinan (山东）Hydroscand
  • Heat Exchanger / Rotary Joints and much more...
  • Pumps (on request)

K&L Industries - Industrial Pipe & Fittings Execution Platform

K&L Industries operates as a cross-border industrial supply powerhouse for steel pipes, forged fittings, butt weld fittings, and forged flanges — engineered for energy, petrochemical, infrastructure, and heavy industry projects.

We do not resell materials.
We control production, compliance, and performance integrity at factory level.

Global Standards. Engineered Compliance.

All materials are manufactured and delivered in strict accordance with international standards, including:

ANSI / ASME • API • DIN • BS • JIS • GOST • AWWA • SABS • AS

Certification and traceability are integrated into every shipment — not added as an afterthought.

Performance Verified. Not Assumed.

Every product undergoes rigorous inspection and testing protocols to ensure structural integrity and operational reliability in demanding environments:

• High-temperature tensile testing • Impact testing • Flattening testing • Hydraulic pressure testing • Ultrasonic testing (UT) • Liquid penetrant testing (PT)
• Coating thickness inspection • Intergranular corrosion (IGC) testing

Quality is engineered into the process — from raw material to final dispatch.

Controlled Supply Architecture

Through strategic factory partnerships, multi-source capacity structuring, and cross-border execution management, K&L ensures:

• Production slot priority • Technical alignment with project specifications • EN 10204 3.1 / 3.2 documentation integrity • On-time global delivery
• Risk mitigation across jurisdictions

In volatile markets, supply chain control defines competitive advantage.

K&L Industries stands at the intersection of European compliance logic and Chinese manufacturing scale — delivering industrial continuity for projects where failure is not an option.

When performance matters, supply must be engineered — not negotiated.

Petro & Chemical Industry

Oil & Gas Pipeline

Marine & Offshore

Energy & Power

K&L - QSI Jinan

Hoses and Fluid components

Your expert for hoses and fluid components

We offer a comprehensive range of hoses and fluid components with over 20,000 items. Whether you need standard products or something highly specialized, we are always here to help. Trust in our expertise and find the perfect solution to meet your needs.

Butterfly & Control Valves

Why customers consider our products from K&L-industrie: Because quality always pays off.

  • K&L Globe Valves
  • Ball Valves (Trunnion Mounted Ball Valves / Floating ball Valves)
  • Butterfly Valves (Centric butterfly valves PTFE-lined or with elastomer liner)
  • Triple offset butterfly valves / double eccentric bfv
  • Rubber Lined Butterfly Valves - Wouter Witzel
  • High pressure Ball Valves (PN10 - PN250)
  • High pressure gate valves from Germany (PN 160)
  • K&L Multi way ball vales (3 -way -/ 4 -way ball valves)
  •  Gas control valves 

K&L - Accesories

Actuators, solenoid valves, limit switches and more

Our accessory portfolio, for the best performance.

  • Pneumatic Actuators
  • Electric Actuators 
  • Hydraulic Actuators
  • Manual worm gears 
  • Solenoid valves, limit switches...and more.

Control Gas Regulation Valves

The K&L series of ring throttle valves – Tri regulation valves – are suitable as wafer-type solutions for a wide variety of applications. These exhaust gas valves are designed for PN6-16 flanges according to DIN 2631-2633. These valves are used in diverse industries such as plant engineering and ventilation technology. The series is suitable for regulating both gaseous and liquid media and bulk solids. By using different materials, the ring throttle valves can be approved for maximum medium temperatures of up to +550°C. The temperature resistance depends on the operating pressure.