Donghuan Cast | Premium Malleable Iron & Pipe Fitting Solutions Since 1986

About Donghuan Cast

Shijiazhuang Donghuan Malleable Iron Castings Co., Ltd., established in 1986, is a leading enterprise in the manufacturing of industrial pipe fittings with over 30 years of experience. We specialize in malleable iron, ductile iron, gray iron, and carbon steel products, serving clients across industries including oil & gas, construction, mining, and utilities.

Our commitment to innovation, quality assurance, and eco-friendly manufacturing has earned us the prestigious “High-Tech Enterprise” title in China. We continue to invest in R&D and advanced production technologies to deliver reliable, durable, and compliant fittings worldwide.

30+

Years of Experience

4000+

MT Annual Output

Our Manufacturing Excellence

12,000㎡ Facility

State-of-the-art factory with advanced casting and machining lines ensuring high-volume, consistent production.

200+ Skilled Staff

Over 40 professional technicians and engineers dedicated to quality control and process innovation.

Quality Assurance

Rigorous testing protocols including tensile strength, elongation, and pressure testing per EN and ASTM standards.

Eco-Friendly

Sustainable casting processes, waste reduction, and energy-efficient operations aligned with green manufacturing.

Our Product Range

We manufacture a wide range of industrial fittings compliant with DIN, US, and EU standards. All products are engineered for durability, leak-proof performance, and resistance to high pressure and temperature.

Malleable Iron Pipe Fittings

Available in DIN and American standards. Made from EN-GJMB-300-6 with min tensile strength of 300 N/mm² and elongation ≥6%.

• Elbows, Tees, Couplings
• Galvanized or black finish
• Pressure-rated up to 300 PSI

Air Hose Couplings

Also known as claw couplings. Available in US and EU types for quick-connect applications in pneumatic systems.

• Interchangeable across hose sizes
• Malleable iron construction
• Ideal for sandblast and air tools

Double Bolt Clamps

Heavy-duty clamps with saddles, plated iron housing, machine bolts, and hex nuts for secure pipe fastening.

• High load-bearing capacity
• Corrosion-resistant plating
• Used in structural and industrial piping

Camlock Couplings

Fast, reliable connections for fluid transfer. Available in multiple styles (A, B, C, D, DC, DP, F) and materials.

• Aluminum, stainless steel, or steel
• Leak-proof sealing
• Used in chemical, water, and fuel transfer

Stainless Steel Pipe Fittings

Corrosion-resistant fittings for harsh environments. Ideal for food processing, marine, and chemical industries.

• 304 and 316 grades available
• Threaded and socket weld types
• High temperature resistance

Carbon Steel Pipe Nipples

Precision-threaded nipples for tight connections in gas, water, and oil systems. Hot-dip galvanized for durability.

• Hex and square styles
• Lengths from 1" to 12"
• ASTM A733 compliant

Explosion-Proof Pipe Unions

Designed for hazardous environments where spark resistance and secure sealing are critical.

• Flame-path design
• Suitable for Zone 1 & 2
• Used in oil rigs and refineries

Tube Clamps

Secure fastening solutions for tubes and conduits in industrial and electrical applications.

• Adjustable and fixed types
• Galvanized or stainless steel
• Vibration-resistant design

Why Choose Donghuan Cast?

30+ Years of Expertise

Proven track record in manufacturing high-quality cast iron and steel fittings for global markets.

Strict Quality Control

Each product undergoes rigorous inspection for dimensional accuracy, material strength, and surface finish.

Global Compliance

Products meet DIN, ASTM, and ISO standards, ensuring compatibility and safety in international projects.

Innovation-Driven

Awarded “High-Tech Enterprise” for continuous R&D and adoption of advanced casting technologies.

Frequently Asked Questions

What materials do you use for your castings?

We specialize in malleable iron (EN-GJMB-300-6), ductile iron, gray iron, carbon steel, and stainless steel (304/316).

Are your products compliant with international standards?

Yes, our fittings meet DIN, ASTM, and ISO standards. We provide certification upon request.

Can you customize fittings for specific applications?

Absolutely. We offer OEM and ODM services with custom sizes, finishes, and packaging.

What is your production lead time?

Typically 20–30 days after order confirmation, depending on quantity and customization.

Get in Touch

Reach out for quotes, technical support, or partnership opportunities.

Contact Information

Tel: +86 311 8530 1359

Mobile: +86 136 3331 1855

Fax: +86 311 8530 1470

WhatsApp: +8613633311855

Skype: sdhcast

Email: dhsales@sdhcast.com

Visit Official Website

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Precision Cast Iron & Industrial Fittings